Fix the typing of the cache context

Newsfile
Don't cache introspection failures
2025-12-07 01:20:16 +00:00 · 2025-04-14 19:19:49 +02:00 · 2025-04-14 19:17:01 +02:00 · 2025-04-14 19:16:07 +02:00
672 changed files with 11687 additions and 42206 deletions
--- a/.ci/scripts/test_synapse_port_db.sh
+++ b/.ci/scripts/test_synapse_port_db.sh
@@ -61,7 +61,7 @@ poetry run update_synapse_database --database-config .ci/postgres-config-unporte
 echo "+++ Comparing ported schema with unported schema"
 # Ignore the tables that portdb creates. (Should it tidy them up when the porting is completed?)
 psql synapse -c "DROP TABLE port_from_sqlite3;"
-pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner --restrict-key=TESTING synapse_unported > unported.sql
-pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner --restrict-key=TESTING synapse          >   ported.sql
+pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner synapse_unported > unported.sql
+pg_dump --format=plain --schema-only --no-tablespaces --no-acl --no-owner synapse          >   ported.sql
 # By default, `diff` returns zero if there are no changes and nonzero otherwise
-diff -u unported.sql ported.sql | tee schema_diff
+diff -u unported.sql ported.sql | tee schema_diff
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -9,4 +9,5 @@
  - End with either a period (.) or an exclamation mark (!).
  - Start with a capital letter.
  - Feel free to credit yourself, by adding a sentence "Contributed by @github_username." or "Contributed by [Your Name]." to the end of the entry.
-* [ ] [Code style](https://element-hq.github.io/synapse/latest/code_style.html) is correct (run the [linters](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#run-the-linters))
+* [ ] [Code style](https://element-hq.github.io/synapse/latest/code_style.html) is correct
+  (run the [linters](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#run-the-linters))
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -5,7 +5,7 @@ name: Build docker images
 on:
  push:
    tags: ["v*"]
-    branches: [master, main, develop]
+    branches: [ master, main, develop ]
  workflow_dispatch:

 permissions:
@@ -14,24 +14,26 @@ permissions:
  id-token: write # needed for signing the images with GitHub OIDC Token
 jobs:
  build:
-    name: Build and push image for ${{ matrix.platform }}
-    runs-on: ${{ matrix.runs_on }}
-    strategy:
-      matrix:
-        include:
-          - platform: linux/amd64
-            runs_on: ubuntu-24.04
-            suffix: linux-amd64
-          - platform: linux/arm64
-            runs_on: ubuntu-24.04-arm
-            suffix: linux-arm64
+    runs-on: ubuntu-22.04
    steps:
+      - name: Set up QEMU
+        id: qemu
+        uses: docker/setup-qemu-action@29109295f81e9208d7d86ff1c6c12d2833863392 # v3.6.0
+        with:
+          platforms: arm64
+
      - name: Set up Docker Buildx
        id: buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2 # v3.10.0
+
+      - name: Inspect builder
+        run: docker buildx inspect
+
+      - name: Install Cosign
+        uses: sigstore/cosign-installer@d7d6bc7722e3daa8354c50bcb52f4837da5e9b6a # v3.8.1

      - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Extract version from pyproject.toml
        # Note: explicitly requesting bash will mean bash is invoked with `-eo pipefail`, see
@@ -41,91 +43,25 @@ jobs:
          echo "SYNAPSE_VERSION=$(grep "^version" pyproject.toml | sed -E 's/version\s*=\s*["]([^"]*)["]/\1/')" >> $GITHUB_ENV

      - name: Log in to DockerHub
-        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Log in to GHCR
-        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

-      - name: Build and push by digest
-        id: build
-        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
-        with:
-          push: true
-          labels: |
-            gitsha1=${{ github.sha }}
-            org.opencontainers.image.version=${{ env.SYNAPSE_VERSION }}
-          tags: |
-            docker.io/matrixdotorg/synapse
-            ghcr.io/element-hq/synapse
-          file: "docker/Dockerfile"
-          platforms: ${{ matrix.platform }}
-          outputs: type=image,push-by-digest=true,name-canonical=true,push=true
-
-      - name: Export digest
-        run: |
-          mkdir -p ${{ runner.temp }}/digests
-          digest="${{ steps.build.outputs.digest }}"
-          touch "${{ runner.temp }}/digests/${digest#sha256:}"
-
-      - name: Upload digest
-        uses: actions/upload-artifact@v4
-        with:
-          name: digests-${{ matrix.suffix }}
-          path: ${{ runner.temp }}/digests/*
-          if-no-files-found: error
-          retention-days: 1
-
-  merge:
-    name: Push merged images to ${{ matrix.repository }}
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        repository:
-          - docker.io/matrixdotorg/synapse
-          - ghcr.io/element-hq/synapse
-
-    needs:
-      - build
-    steps:
-      - name: Download digests
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
-        with:
-          path: ${{ runner.temp }}/digests
-          pattern: digests-*
-          merge-multiple: true
-
-      - name: Log in to DockerHub
-        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
-        if: ${{ startsWith(matrix.repository, 'docker.io') }}
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
-      - name: Log in to GHCR
-        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
-        if: ${{ startsWith(matrix.repository, 'ghcr.io') }}
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
-
-      - name: Install Cosign
-        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # v3.9.2
-
      - name: Calculate docker image tag
-        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
+        id: set-tag
+        uses: docker/metadata-action@902fa8ec7d6ecbf8d84d538b9b233a880e428804 # v5.7.0
        with:
-          images: ${{ matrix.repository }}
+          images: |
+            docker.io/matrixdotorg/synapse
+            ghcr.io/element-hq/synapse
          flavor: |
            latest=false
          tags: |
@@ -133,23 +69,31 @@ jobs:
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/master' }}
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
            type=pep440,pattern={{raw}}
-            type=sha

-      - name: Create manifest list and push
-        working-directory: ${{ runner.temp }}/digests
-        env:
-          REPOSITORY: ${{ matrix.repository }}
-        run: |
-          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
-            $(printf "$REPOSITORY@sha256:%s " *)
+      - name: Build and push all platforms
+        id: build-and-push
+        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
+        with:
+          push: true
+          labels: |
+            gitsha1=${{ github.sha }}
+            org.opencontainers.image.version=${{ env.SYNAPSE_VERSION }}
+          tags: "${{ steps.set-tag.outputs.tags }}"
+          file: "docker/Dockerfile"
+          platforms: linux/amd64,linux/arm64

-      - name: Sign each manifest
+          # arm64 builds OOM without the git fetch setting. c.f.
+          # https://github.com/rust-lang/cargo/issues/10583
+          build-args: |
+            CARGO_NET_GIT_FETCH_WITH_CLI=true
+
+      - name: Sign the images with GitHub OIDC Token
        env:
-          REPOSITORY: ${{ matrix.repository }}
+          DIGEST: ${{ steps.build-and-push.outputs.digest }}
+          TAGS: ${{ steps.set-tag.outputs.tags }}
        run: |
-          DIGESTS=""
-          for TAG in $(echo "$DOCKER_METADATA_OUTPUT_JSON" | jq -r '.tags[]'); do
-            DIGEST="$(docker buildx imagetools inspect $TAG --format '{{json .Manifest}}' | jq -r '.digest')"
-            DIGESTS="$DIGESTS $REPOSITORY@$DIGEST"
+          images=""
+          for tag in ${TAGS}; do
+            images+="${tag}@${DIGEST} "
          done
-          cosign sign --yes $DIGESTS
+          cosign sign --yes ${images}
--- a/.github/workflows/docs-pr-netlify.yaml
+++ b/.github/workflows/docs-pr-netlify.yaml
@@ -14,7 +14,7 @@ jobs:
      # There's a 'download artifact' action, but it hasn't been updated for the workflow_run action
      # (https://github.com/actions/download-artifact/issues/60) so instead we get this mess:
      - name: 📥 Download artifact
-        uses: dawidd6/action-download-artifact@ac66b43f0e6a346234dd65d4d0c8fbb31cb316e5 # v11
+        uses: dawidd6/action-download-artifact@07ab29fd4a977ae4d2b275087cf67563dfdf0295 # v9
        with:
          workflow: docs-pr.yaml
          run_id: ${{ github.event.workflow_run.id }}
--- a/.github/workflows/docs-pr.yaml
+++ b/.github/workflows/docs-pr.yaml
@@ -13,7 +13,7 @@ jobs:
    name: GitHub Pages
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          # Fetch all history so that the schema_versions script works.
          fetch-depth: 0
@@ -24,7 +24,7 @@ jobs:
          mdbook-version: '0.4.17'

      - name: Setup python
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"

@@ -50,7 +50,7 @@ jobs:
    name: Check links in documentation
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Setup mdbook
        uses: peaceiris/actions-mdbook@ee69d230fe19748b7abf22df32acaa93833fad08 # v2.0.0
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -50,7 +50,7 @@ jobs:
    needs:
      - pre
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          # Fetch all history so that the schema_versions script works.
          fetch-depth: 0
@@ -64,7 +64,7 @@ jobs:
        run: echo 'window.SYNAPSE_VERSION = "${{ needs.pre.outputs.branch-version }}";' > ./docs/website_files/version.js

      - name: Setup python
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"

@@ -78,18 +78,6 @@ jobs:
          mdbook build
          cp book/welcome_and_overview.html book/index.html

-      - name: Prepare and publish schema files
-        run: |
-          sudo apt-get update && sudo apt-get install -y yq
-          mkdir -p book/schema
-          # Remove developer notice before publishing.
-          rm schema/v*/Do\ not\ edit\ files\ in\ this\ folder
-          # Copy schema files that are independent from current Synapse version.
-          cp -r -t book/schema schema/v*/
-          # Convert config schema from YAML source file to JSON.
-          yq < schema/synapse-config.schema.yaml \
-            > book/schema/synapse-config.schema.json
-
      # Deploy to the target directory.
      - name: Deploy to gh pages
        uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0
--- a/.github/workflows/fix_lint.yaml
+++ b/.github/workflows/fix_lint.yaml
@@ -6,11 +6,6 @@ name: Attempt to automatically fix linting errors
 on:
  workflow_dispatch:

-env:
-  # We use nightly so that `fmt` correctly groups together imports, and
-  # clippy correctly fixes up the benchmarks.
-  RUST_VERSION: nightly-2025-06-24
-
 jobs:
  fixup:
    name: Fix up
@@ -18,14 +13,16 @@ jobs:

    steps:
      - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
+        uses: dtolnay/rust-toolchain@56f84321dbccf38fb67ce29ab63e4754056677e0 # master (rust 1.85.1)
        with:
-          toolchain: ${{ env.RUST_VERSION }}
+          # We use nightly so that `fmt` correctly groups together imports, and
+          # clippy correctly fixes up the benchmarks.
+          toolchain: nightly-2022-12-01
          components: clippy, rustfmt
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - name: Setup Poetry
        uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -47,6 +44,6 @@ jobs:
      - run: cargo fmt
        continue-on-error: true

-      - uses: stefanzweifel/git-auto-commit-action@778341af668090896ca464160c2def5d1d1a3eb0 # v6.0.1
+      - uses: stefanzweifel/git-auto-commit-action@e348103e9026cc0eee72ae06630dbe30c8bf7a79 # v5.1.0
        with:
          commit_message: "Attempt to fix linting"
--- a/.github/workflows/latest_deps.yml
+++ b/.github/workflows/latest_deps.yml
@@ -21,9 +21,6 @@ concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

-env:
-  RUST_VERSION: 1.87.0
-
 jobs:
  check_repo:
    # Prevent this workflow from running on any fork of Synapse other than element-hq/synapse, as it is
@@ -42,12 +39,10 @@ jobs:
    if: needs.check_repo.outputs.should_run_workflow == 'true'
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@fcf085fcb4b4b8f63f96906cd713eb52181b5ea4 # stable (rust 1.85.1)
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      # The dev dependencies aren't exposed in the wheel metadata (at least with current
      # poetry-core versions), so we install with poetry.
@@ -60,7 +55,7 @@ jobs:
      - run: poetry run pip list > before.txt
      # Upgrade all runtime dependencies only. This is intended to mimic a fresh
      # `pip install matrix-synapse[all]` as closely as possible.
-      - run: poetry update --without dev
+      - run: poetry update --no-dev
      - run: poetry run pip list > after.txt && (diff -u before.txt after.txt || true)
      - name: Remove unhelpful options from mypy config
        run: sed -e '/warn_unused_ignores = True/d' -e '/warn_redundant_casts = True/d' -i mypy.ini
@@ -77,13 +72,11 @@ jobs:
            postgres-version: "14"

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@fcf085fcb4b4b8f63f96906cd713eb52181b5ea4 # stable (rust 1.85.1)
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - run: sudo apt-get -qq install xmlsec1
      - name: Set up PostgreSQL ${{ matrix.postgres-version }}
@@ -93,7 +86,7 @@ jobs:
            -e POSTGRES_PASSWORD=postgres \
            -e POSTGRES_INITDB_ARGS="--lc-collate C --lc-ctype C --encoding UTF8" \
            postgres:${{ matrix.postgres-version }}
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"
      - run: pip install .[all,test]
@@ -152,13 +145,11 @@ jobs:
      BLACKLIST: ${{ matrix.workers && 'synapse-blacklist-with-workers' }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@fcf085fcb4b4b8f63f96906cd713eb52181b5ea4 # stable (rust 1.85.1)
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - name: Ensure sytest runs `pip install`
        # Delete the lockfile so sytest will `pip install` rather than `poetry install`
@@ -202,14 +193,14 @@ jobs:

    steps:
      - name: Check out synapse codebase
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          path: synapse

      - name: Prepare Complement's Prerequisites
        run: synapse/.ci/scripts/setup_complement_prerequisites.sh

-      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      - uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5.4.0
        with:
          cache-dependency-path: complement/go.sum
          go-version-file: complement/go.mod
@@ -234,7 +225,7 @@ jobs:
    runs-on: ubuntu-latest

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
--- a/.github/workflows/poetry_lockfile.yaml
+++ b/.github/workflows/poetry_lockfile.yaml
@@ -16,8 +16,8 @@ jobs:
    name: "Check locked dependencies have sdists"
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: '3.x'
      - run: pip install tomli
--- a/.github/workflows/push_complement_image.yml
+++ b/.github/workflows/push_complement_image.yml
@@ -33,29 +33,29 @@ jobs:
      packages: write
    steps:
      - name: Checkout specific branch (debug build)
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        if: github.event_name == 'workflow_dispatch'
        with:
          ref: ${{ inputs.branch }}
      - name: Checkout clean copy of develop (scheduled build)
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        if: github.event_name == 'schedule'
        with:
          ref: develop
      - name: Checkout clean copy of master (on-push)
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        if: github.event_name == 'push'
        with:
          ref: master
      - name: Login to registry
-        uses: docker/login-action@184bdaa0721073962dff0199f1fb9940f07167d1 # v3.5.0
+        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Work out labels for complement image
        id: meta
-        uses: docker/metadata-action@c1e51972afc2121e065aed6d45c65596fe445f3f # v5.8.0
+        uses: docker/metadata-action@902fa8ec7d6ecbf8d84d538b9b233a880e428804 # v5.7.0
        with:
          images: ghcr.io/${{ github.repository }}/complement-synapse
          tags: |
--- a/.github/workflows/release-artifacts.yml
+++ b/.github/workflows/release-artifacts.yml
@@ -27,10 +27,10 @@ jobs:
    name: "Calculate list of debian distros"
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
-          python-version: "3.x"
+          python-version: '3.x'
      - id: set-distros
        run: |
          # if we're running from a tag, get the full list of distros; otherwise just use debian:sid
@@ -55,18 +55,18 @@ jobs:

    steps:
      - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          path: src

      - name: Set up Docker Buildx
        id: buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2 # v3.10.0
        with:
          install: true

      - name: Set up docker layer caching
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
@@ -74,9 +74,9 @@ jobs:
            ${{ runner.os }}-buildx-

      - name: Set up python
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
-          python-version: "3.x"
+          python-version: '3.x'

      - name: Build the packages
        # see https://github.com/docker/build-push-action/issues/252
@@ -107,15 +107,12 @@ jobs:
          path: debs/*

  build-wheels:
-    name: Build wheels on ${{ matrix.os }}
+    name: Build wheels on ${{ matrix.os }} for ${{ matrix.arch }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
-        os:
-          - ubuntu-24.04
-          - ubuntu-24.04-arm
-          - macos-13 # This uses x86-64
-          - macos-14 # This uses arm64
+        os: [ubuntu-22.04, macos-13]
+        arch: [x86_64, aarch64]
        # is_pr is a flag used to exclude certain jobs from the matrix on PRs.
        # It is not read by the rest of the workflow.
        is_pr:
@@ -125,27 +122,38 @@ jobs:
          # Don't build macos wheels on PR CI.
          - is_pr: true
            os: "macos-13"
-          - is_pr: true
-            os: "macos-14"
+          # Don't build aarch64 wheels on mac.
+          - os: "macos-13"
+            arch: aarch64
          # Don't build aarch64 wheels on PR CI.
          - is_pr: true
-            os: "ubuntu-24.04-arm"
+            arch: aarch64

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          # setup-python@v4 doesn't impose a default python version. Need to use 3.x
          # here, because `python` on osx points to Python 2.7.
          python-version: "3.x"

      - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==3.0.0
+        run: python -m pip install cibuildwheel==2.23.0
+
+      - name: Set up QEMU to emulate aarch64
+        if: matrix.arch == 'aarch64'
+        uses: docker/setup-qemu-action@29109295f81e9208d7d86ff1c6c12d2833863392 # v3.6.0
+        with:
+          platforms: arm64
+
+      - name: Build aarch64 wheels
+        if: matrix.arch == 'aarch64'
+        run: echo 'CIBW_ARCHS_LINUX=aarch64' >> $GITHUB_ENV

      - name: Only build a single wheel on PR
        if: startsWith(github.ref, 'refs/pull/')
-        run: echo "CIBW_BUILD="cp39-manylinux_*"" >> $GITHUB_ENV
+        run: echo "CIBW_BUILD="cp39-manylinux_${{ matrix.arch }}"" >> $GITHUB_ENV

      - name: Build wheels
        run: python -m cibuildwheel --output-dir wheelhouse
@@ -153,10 +161,13 @@ jobs:
          # Skip testing for platforms which various libraries don't have wheels
          # for, and so need extra build deps.
          CIBW_TEST_SKIP: pp3*-* *i686* *musl*
+          # Fix Rust OOM errors on emulated aarch64: https://github.com/rust-lang/cargo/issues/10583
+          CARGO_NET_GIT_FETCH_WITH_CLI: true
+          CIBW_ENVIRONMENT_PASS_LINUX: CARGO_NET_GIT_FETCH_WITH_CLI

      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
-          name: Wheel-${{ matrix.os }}
+          name: Wheel-${{ matrix.os }}-${{ matrix.arch }}
          path: ./wheelhouse/*.whl

  build-sdist:
@@ -165,10 +176,10 @@ jobs:
    if: ${{ !startsWith(github.ref, 'refs/pull/') }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
-          python-version: "3.10"
+          python-version: '3.10'

      - run: pip install build

@@ -180,6 +191,7 @@ jobs:
          name: Sdist
          path: dist/*.tar.gz

+
  # if it's a tag, create a release and attach the artifacts to it
  attach-assets:
    name: "Attach assets to release"
@@ -191,7 +203,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Download all workflow run artifacts
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e # v4.2.1
      - name: Build a tarball for the debs
        # We need to merge all the debs uploads into one folder, then compress
        # that.
@@ -201,7 +213,7 @@ jobs:
          tar -cvJf debs.tar.xz debs
      - name: Attach to release
        # Pinned to work around https://github.com/softprops/action-gh-release/issues/445
-        uses: softprops/action-gh-release@c95fe1489396fe8a9eb87c0abf8aa5b2ef267fda # v0.1.15
+        uses: softprops/action-gh-release@de2c0eb89ae2a093876385947365aca7b0e5f844 # v0.1.15
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
--- a/.github/workflows/schema.yaml
+++ b/.github/workflows/schema.yaml
@@ -1,57 +0,0 @@
-name: Schema
-
-on:
-  pull_request:
-    paths:
-      - schema/**
-      - docs/usage/configuration/config_documentation.md
-  push:
-    branches: ["develop", "release-*"]
-  workflow_dispatch:
-
-jobs:
-  validate-schema:
-    name: Ensure Synapse config schema is valid
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
-        with:
-          python-version: "3.x"
-      - name: Install check-jsonschema
-        run: pip install check-jsonschema==0.33.0
-
-      - name: Validate meta schema
-        run: check-jsonschema --check-metaschema schema/v*/meta.schema.json
-      - name: Validate schema
-        run: |-
-          # Please bump on introduction of a new meta schema.
-          LATEST_META_SCHEMA_VERSION=v1
-          check-jsonschema \
-            --schemafile="schema/$LATEST_META_SCHEMA_VERSION/meta.schema.json" \
-            schema/synapse-config.schema.yaml
-      - name: Validate default config
-      # Populates the empty instance with default values and checks against the schema.
-        run: |-
-          echo "{}" | check-jsonschema \
-            --fill-defaults --schemafile=schema/synapse-config.schema.yaml -
-
-  check-doc-generation:
-    name: Ensure generated documentation is up-to-date
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
-        with:
-          python-version: "3.x"
-      - name: Install PyYAML
-        run: pip install PyYAML==6.0.2
-
-      - name: Regenerate config documentation
-        run: |
-          scripts-dev/gen_config_documentation.py \
-            schema/synapse-config.schema.yaml \
-          > docs/usage/configuration/config_documentation.md
-      - name: Error in case of any differences
-      # Errors if there are now any modified files (untracked files are ignored).
-        run: 'git diff --exit-code'
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,9 +11,6 @@ concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

-env:
-  RUST_VERSION: 1.87.0
-
 jobs:
  # Job to detect what has changed so we don't run e.g. Rust checks on PRs that
  # don't modify Rust code.
@@ -86,12 +83,10 @@ jobs:
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8
      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
        with:
          python-version: "3.x"
@@ -106,8 +101,8 @@ jobs:
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"
      - run: "pip install 'click==8.1.1' 'GitPython>=3.1.20'"
@@ -116,8 +111,8 @@ jobs:
  check-lockfile:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"
      - run: .ci/scripts/check_lockfile.py
@@ -129,7 +124,7 @@ jobs:

    steps:
      - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Setup Poetry
        uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -151,13 +146,11 @@ jobs:

    steps:
      - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - name: Setup Poetry
        uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -174,7 +167,7 @@ jobs:
      # Cribbed from
      # https://github.com/AustinScola/mypy-cache-github-action/blob/85ea4f2972abed39b33bd02c36e341b28ca59213/src/restore.ts#L10-L17
      - name: Restore/persist mypy's cache
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
        with:
          path: |
            .mypy_cache
@@ -187,7 +180,7 @@ jobs:
  lint-crlf:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - name: Check line endings
        run: scripts-dev/check_line_terminators.sh

@@ -195,11 +188,11 @@ jobs:
    if: ${{ (github.base_ref == 'develop'  || contains(github.base_ref, 'release-')) && github.actor != 'dependabot[bot]' }}
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"
      - run: "pip install 'towncrier>=18.6.0rc1'"
@@ -213,14 +206,12 @@ jobs:
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          ref: ${{ github.event.pull_request.head.sha }}
      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8
      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
        with:
          poetry-version: "2.1.1"
@@ -233,14 +224,13 @@ jobs:
    if: ${{ needs.changes.outputs.rust == 'true' }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
        with:
            components: clippy
-            toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - run: cargo clippy -- -D warnings

@@ -252,70 +242,32 @@ jobs:
    if: ${{ needs.changes.outputs.rust == 'true' }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
+        uses: dtolnay/rust-toolchain@56f84321dbccf38fb67ce29ab63e4754056677e0 # master (rust 1.85.1)
        with:
-            toolchain: nightly-2025-04-23
+            toolchain: nightly-2022-12-01
            components: clippy
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - run: cargo clippy --all-features -- -D warnings

-  lint-rust:
-    runs-on: ubuntu-latest
-    needs: changes
-    if: ${{ needs.changes.outputs.rust == 'true' }}
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-
-      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
-
-      - name: Setup Poetry
-        uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
-        with:
-          # Install like a normal project from source with all optional dependencies
-          extras: all
-          install-project: "true"
-          poetry-version: "2.1.1"
-
-      - name: Ensure `Cargo.lock` is up to date (no stray changes after install)
-        # The `::error::` syntax is using GitHub Actions' error annotations, see
-        # https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions
-        run: |
-          if git diff --quiet Cargo.lock; then
-            echo "Cargo.lock is up to date"
-          else
-            echo "::error::Cargo.lock has uncommitted changes after install. Please run 'poetry install --extras all' and commit the Cargo.lock changes."
-            git diff --exit-code Cargo.lock
-            exit 1
-          fi
-
-  # This job is split from `lint-rust` because it requires a nightly Rust toolchain
-  # for some of the unstable options we use in `.rustfmt.toml`.
  lint-rustfmt:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.rust == 'true' }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
+        uses: dtolnay/rust-toolchain@56f84321dbccf38fb67ce29ab63e4754056677e0 # master (rust 1.85.1)
        with:
-          # We use nightly so that we can use some unstable options that we use in
-          # `.rustfmt.toml`.
-          toolchain: nightly-2025-04-23
+          # We use nightly so that it correctly groups together imports
+          toolchain: nightly-2022-12-01
          components: rustfmt
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - run: cargo fmt --check

@@ -326,8 +278,8 @@ jobs:
    needs: changes
    if: ${{ needs.changes.outputs.linting_readme == 'true' }}
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"
      - run: "pip install rstcheck"
@@ -347,7 +299,6 @@ jobs:
      - check-lockfile
      - lint-clippy
      - lint-clippy-nightly
-      - lint-rust
      - lint-rustfmt
      - lint-readme
    runs-on: ubuntu-latest
@@ -366,7 +317,6 @@ jobs:
            lint-pydantic
            lint-clippy
            lint-clippy-nightly
-            lint-rust
            lint-rustfmt
            lint-readme

@@ -376,8 +326,8 @@ jobs:
    needs: linting-done
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: "3.x"
      - id: get-matrix
@@ -397,7 +347,7 @@ jobs:
        job:  ${{ fromJson(needs.calculate-test-jobs.outputs.trial_test_matrix) }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - run: sudo apt-get -qq install xmlsec1
      - name: Set up PostgreSQL ${{ matrix.job.postgres-version }}
        if: ${{ matrix.job.postgres-version }}
@@ -412,10 +362,8 @@ jobs:
            postgres:${{ matrix.job.postgres-version }}

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
        with:
@@ -453,13 +401,11 @@ jobs:
      - changes
    runs-on: ubuntu-22.04
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      # There aren't wheels for some of the older deps, so we need to install
      # their build dependencies
@@ -468,7 +414,7 @@ jobs:
          sudo apt-get -qq install build-essential libffi-dev python3-dev \
            libxml2-dev libxslt-dev xmlsec1 zlib1g-dev libjpeg-dev libwebp-dev

-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      - uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
        with:
          python-version: '3.9'

@@ -518,7 +464,7 @@ jobs:
        extras: ["all"]

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      # Install libs necessary for PyPy to build binary wheels for dependencies
      - run: sudo apt-get -qq install xmlsec1 libxml2-dev libxslt-dev
      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
@@ -568,15 +514,13 @@ jobs:
        job: ${{ fromJson(needs.calculate-test-jobs.outputs.sytest_test_matrix) }}

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - name: Prepare test blacklist
        run: cat sytest-blacklist .ci/worker-blacklist > synapse-blacklist-with-workers

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - name: Run SyTest
        run: /bootstrap.sh synapse
@@ -615,7 +559,7 @@ jobs:
          --health-retries 5

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - run: sudo apt-get -qq install xmlsec1 postgresql-client
      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
        with:
@@ -659,7 +603,7 @@ jobs:
          --health-retries 5

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - name: Add PostgreSQL apt repository
        # We need a version of pg_dump that can handle the version of
        # PostgreSQL being tested against. The Ubuntu package repository lags
@@ -714,20 +658,18 @@ jobs:

    steps:
      - name: Checkout synapse codebase
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          path: synapse

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - name: Prepare Complement's Prerequisites
        run: synapse/.ci/scripts/setup_complement_prerequisites.sh

-      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      - uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5.4.0
        with:
          cache-dependency-path: complement/go.sum
          go-version-file: complement/go.mod
@@ -750,13 +692,11 @@ jobs:
      - changes

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@e05ebb0e73db581a4877c6ce762e29fe1e0b5073 # 1.66.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - run: cargo test

@@ -770,13 +710,13 @@ jobs:
      - changes

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
+        uses: dtolnay/rust-toolchain@56f84321dbccf38fb67ce29ab63e4754056677e0 # master (rust 1.85.1)
        with:
            toolchain: nightly-2022-12-01
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - run: cargo bench --no-run

--- a/.github/workflows/triage_labelled.yml
+++ b/.github/workflows/triage_labelled.yml
@@ -11,15 +11,11 @@ jobs:
    if: >
      contains(github.event.issue.labels.*.name, 'X-Needs-Info')
    steps:
-      - uses: actions/add-to-project@4515659e2b458b27365e167605ac44f219494b66 # v1.0.2
+      - uses: actions/add-to-project@280af8ae1f83a494cfad2cb10f02f6d13529caa9 # main (v1.0.2 + 10 commits)
        id: add_project
        with:
          project-url: "https://github.com/orgs/matrix-org/projects/67"
          github-token: ${{ secrets.ELEMENT_BOT_TOKEN }}
-        # This action will error if the issue already exists on the project. Which is
-        # common as `X-Needs-Info` will often be added to issues that are already in
-        # the triage queue. Prevent the whole job from failing in this case.
-        continue-on-error: true
      - name: Set status
        env:
          GITHUB_TOKEN: ${{ secrets.ELEMENT_BOT_TOKEN }}
--- a/.github/workflows/twisted_trunk.yml
+++ b/.github/workflows/twisted_trunk.yml
@@ -20,9 +20,6 @@ concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

-env:
-  RUST_VERSION: 1.87.0
-
 jobs:
  check_repo:
    # Prevent this workflow from running on any fork of Synapse other than element-hq/synapse, as it is
@@ -43,13 +40,11 @@ jobs:
    runs-on: ubuntu-latest

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@fcf085fcb4b4b8f63f96906cd713eb52181b5ea4 # stable (rust 1.85.1)
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
        with:
@@ -70,14 +65,12 @@ jobs:
    runs-on: ubuntu-latest

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - run: sudo apt-get -qq install xmlsec1

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@fcf085fcb4b4b8f63f96906cd713eb52181b5ea4 # stable (rust 1.85.1)
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
        with:
@@ -117,13 +110,11 @@ jobs:
        - ${{ github.workspace }}:/src

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Install Rust
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
-        with:
-          toolchain: ${{ env.RUST_VERSION }}
-      - uses: Swatinem/rust-cache@98c8021b550208e191a6a3145459bfc9fb29c4c0 # v2.8.0
+        uses: dtolnay/rust-toolchain@fcf085fcb4b4b8f63f96906cd713eb52181b5ea4 # stable (rust 1.85.1)
+      - uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6 # v2.7.8

      - name: Patch dependencies
        # Note: The poetry commands want to create a virtualenv in /src/.venv/,
@@ -175,14 +166,14 @@ jobs:

    steps:
      - name: Run actions/checkout@v4 for synapse
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          path: synapse

      - name: Prepare Complement's Prerequisites
        run: synapse/.ci/scripts/setup_complement_prerequisites.sh

-      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      - uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5.4.0
        with:
          cache-dependency-path: complement/go.sum
          go-version-file: complement/go.mod
@@ -217,7 +208,7 @@ jobs:
    runs-on: ubuntu-latest

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
--- a/.gitignore
+++ b/.gitignore
@@ -47,7 +47,6 @@ __pycache__/
 /.idea/
 /.ropeproject/
 /.vscode/
-/.zed/

 # build products
 !/.coveragerc
--- a/.rustfmt.toml
+++ b/.rustfmt.toml
@@ -1,6 +1 @@
-# Unstable options are only available on a nightly toolchain and must be opted into
-unstable_features = true
-
-# `group_imports` is an unstable option that requires nightly Rust toolchain. Tracked by
-# https://github.com/rust-lang/rustfmt/issues/5083
 group_imports = "StdExternalCrate"
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,640 +1,3 @@
-# Synapse 1.138.0rc1 (2025-09-02)
-
-### Features
-
- Support for the stable endpoint and scopes of [MSC3861](https://github.com/matrix-org/matrix-spec-proposals/pull/3861) & co. ([\#18549](https://github.com/element-hq/synapse/issues/18549))
-
-### Bugfixes
-
- Improve database performance of [MSC4293](https://github.com/matrix-org/matrix-spec-proposals/pull/4293) - Redact on Kick/Ban. ([\#18851](https://github.com/element-hq/synapse/issues/18851))
- Do not throw an error when fetching a rejected delayed state event on startup. ([\#18858](https://github.com/element-hq/synapse/issues/18858))
-
-### Improved Documentation
-
- Fix worker documentation incorrectly indicating all room Admin API requests were capable of being handled by workers. ([\#18853](https://github.com/element-hq/synapse/issues/18853))
-
-### Internal Changes
-
- Instrument `_ByteProducer` with tracing to measure potential dead time while writing bytes to the request. ([\#18804](https://github.com/element-hq/synapse/issues/18804))
- Switch to OpenTracing's `ContextVarsScopeManager` instead of our own custom `LogContextScopeManager`. ([\#18849](https://github.com/element-hq/synapse/issues/18849))
- Trace how much work is being done while "recursively fetching redactions". ([\#18854](https://github.com/element-hq/synapse/issues/18854))
- Link [upstream Twisted bug](https://github.com/twisted/twisted/issues/12498) tracking the problem that explains why we have to use a `Producer` to write bytes to the request. ([\#18855](https://github.com/element-hq/synapse/issues/18855))
- Introduce `EventPersistencePair` type. ([\#18857](https://github.com/element-hq/synapse/issues/18857))
-
-
-
-### Updates to locked dependencies
-
-* Bump actions/add-to-project from c0c5949b017d0d4a39f7ba888255881bdac2a823 to 4515659e2b458b27365e167605ac44f219494b66. ([\#18863](https://github.com/element-hq/synapse/issues/18863))
-* Bump actions/checkout from 4.3.0 to 5.0.0. ([\#18834](https://github.com/element-hq/synapse/issues/18834))
-* Bump anyhow from 1.0.98 to 1.0.99. ([\#18841](https://github.com/element-hq/synapse/issues/18841))
-* Bump docker/login-action from 3.4.0 to 3.5.0. ([\#18835](https://github.com/element-hq/synapse/issues/18835))
-* Bump dtolnay/rust-toolchain from b3b07ba8b418998c39fb20f53e8b695cdcc8de1b to e97e2d8cc328f1b50210efc529dca0028893a2d9. ([\#18862](https://github.com/element-hq/synapse/issues/18862))
-* Bump phonenumbers from 9.0.11 to 9.0.12. ([\#18837](https://github.com/element-hq/synapse/issues/18837))
-* Bump regex from 1.11.1 to 1.11.2. ([\#18864](https://github.com/element-hq/synapse/issues/18864))
-* Bump reqwest from 0.12.22 to 0.12.23. ([\#18842](https://github.com/element-hq/synapse/issues/18842))
-* Bump ruff from 0.12.7 to 0.12.10. ([\#18865](https://github.com/element-hq/synapse/issues/18865))
-* Bump serde_json from 1.0.142 to 1.0.143. ([\#18866](https://github.com/element-hq/synapse/issues/18866))
-* Bump types-bleach from 6.2.0.20250514 to 6.2.0.20250809. ([\#18838](https://github.com/element-hq/synapse/issues/18838))
-* Bump types-jsonschema from 4.25.0.20250720 to 4.25.1.20250822. ([\#18867](https://github.com/element-hq/synapse/issues/18867))
-* Bump types-psycopg2 from 2.9.21.20250718 to 2.9.21.20250809. ([\#18836](https://github.com/element-hq/synapse/issues/18836))
-
-# Synapse 1.137.0 (2025-08-26)
-
-No significant changes since 1.137.0rc1.
-
-
-
-
-# Synapse 1.137.0rc1 (2025-08-19)
-
-### Bugfixes
-
- Fix a bug which could corrupt auth chains making it impossible to perform state resolution. ([\#18746](https://github.com/element-hq/synapse/issues/18746))
- Fix error message in `register_new_matrix_user` utility script for empty `registration_shared_secret`. ([\#18780](https://github.com/element-hq/synapse/issues/18780))
- Allow enabling [MSC4108](https://github.com/matrix-org/matrix-spec-proposals/pull/4108) when the stable Matrix Authentication Service integration is enabled. ([\#18832](https://github.com/element-hq/synapse/issues/18832))
-
-### Improved Documentation
-
- Include IPv6 networks in `denied-peer-ips` of coturn setup. Contributed by @litetex. ([\#18781](https://github.com/element-hq/synapse/issues/18781))
-
-### Internal Changes
-
- Update tests to ensure all database tables are emptied when purging a room. ([\#18794](https://github.com/element-hq/synapse/issues/18794))
- Instrument the `encode_response` part of Sliding Sync requests for more complete traces in Jaeger. ([\#18815](https://github.com/element-hq/synapse/issues/18815))
- Tag Sliding Sync traces when we `wait_for_events`. ([\#18816](https://github.com/element-hq/synapse/issues/18816))
- Fix `portdb` CI by hardcoding the new `pg_dump` restrict key that was added due to [CVE-2025-8714](https://nvd.nist.gov/vuln/detail/cve-2025-8714). ([\#18824](https://github.com/element-hq/synapse/issues/18824))
-
-
-
-### Updates to locked dependencies
-
-* Bump actions/add-to-project from 5b1a254a3546aef88e0a7724a77a623fa2e47c36 to 0c37450c4be3b6a7582b2fb013c9ebfd9c8e9300. ([\#18557](https://github.com/element-hq/synapse/issues/18557))
-* Bump actions/cache from 4.2.3 to 4.2.4. ([\#18799](https://github.com/element-hq/synapse/issues/18799))
-* Bump actions/checkout from 4.2.2 to 4.3.0. ([\#18800](https://github.com/element-hq/synapse/issues/18800))
-* Bump actions/download-artifact from 4.3.0 to 5.0.0. ([\#18801](https://github.com/element-hq/synapse/issues/18801))
-* Bump docker/metadata-action from 5.7.0 to 5.8.0. ([\#18773](https://github.com/element-hq/synapse/issues/18773))
-* Bump mypy from 1.16.1 to 1.17.1. ([\#18775](https://github.com/element-hq/synapse/issues/18775))
-* Bump phonenumbers from 9.0.10 to 9.0.11. ([\#18797](https://github.com/element-hq/synapse/issues/18797))
-* Bump pygithub from 2.6.1 to 2.7.0. ([\#18779](https://github.com/element-hq/synapse/issues/18779))
-* Bump serde_json from 1.0.141 to 1.0.142. ([\#18776](https://github.com/element-hq/synapse/issues/18776))
-* Bump slab from 0.4.10 to 0.4.11. ([\#18809](https://github.com/element-hq/synapse/issues/18809))
-* Bump tokio from 1.47.0 to 1.47.1. ([\#18774](https://github.com/element-hq/synapse/issues/18774))
-* Bump types-pyyaml from 6.0.12.20250516 to 6.0.12.20250809. ([\#18798](https://github.com/element-hq/synapse/issues/18798))
-* Bump types-setuptools from 80.9.0.20250529 to 80.9.0.20250809. ([\#18796](https://github.com/element-hq/synapse/issues/18796))
-
-# Synapse 1.136.0 (2025-08-12)
-
-Note: This release includes the security fixes from `1.135.2` and `1.136.0rc2`, detailed below.
-
-### Bugfixes
-
- Fix bug introduced in 1.135.2 and 1.136.0rc2 where the [Make Room Admin API](https://element-hq.github.io/synapse/latest/admin_api/rooms.html#make-room-admin-api) would not treat a room v12's creator power level as the highest in room. ([\#18805](https://github.com/element-hq/synapse/issues/18805))
-
-
-# Synapse 1.135.2 (2025-08-11)
-
-This is the Synapse portion of the [Matrix coordinated security release](https://matrix.org/blog/2025/07/security-predisclosure/). This release includes support for [room version](https://spec.matrix.org/v1.15/rooms/) 12 which fixes a number of security vulnerabilities, including [CVE-2025-49090](https://www.cve.org/CVERecord?id=CVE-2025-49090).
-
-The default room version is not changed. Not all clients will support room version 12 immediately, and not all users will be using the latest version of their clients. Large, public rooms are advised to wait a few weeks before upgrading to room version 12 to allow users throughout the Matrix ecosystem to update their clients.
-
-Note: release 1.135.1 was skipped due to issues discovered during the release process.
-
-Two patched Synapse releases are now available:
-
-* `1.135.2`: stable release comprised of `1.135.0` + security patches
-    * Upgrade to this release **if you are currently running 1.135.0 or below**.
-* `1.136.0rc2`: unstable release candidate comprised of `1.136.0rc1` + security patches.
-    * Upgrade to this release **only if you are on 1.136.0rc1**.
-
-### Bugfixes
-
- Fix invalidation of storage cache that was broken in 1.135.0. ([\#18786](https://github.com/element-hq/synapse/issues/18786))
-
-### Internal Changes
-
- Add a parameter to `upgrade_rooms(..)` to allow auto join local users. ([\#82](https://github.com/element-hq/synapse/issues/82))
- Speed up upgrading a room with large numbers of banned users. ([\#18574](https://github.com/element-hq/synapse/issues/18574))
-
-
-# Synapse 1.136.0rc2 (2025-08-11)
-
- Update MSC4293 redaction logic for room v12. ([\#80](https://github.com/element-hq/synapse/issues/80))
-
-### Internal Changes
-
- Add a parameter to `upgrade_rooms(..)` to allow auto join local users. ([\#83](https://github.com/element-hq/synapse/issues/83))
-
-
-# Synapse 1.136.0rc1 (2025-08-05)
-
-Please check [the relevant section in the upgrade notes](https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11360) as this release contains changes to MAS support, metrics labels and the module API which may require your attention when upgrading.
-
-### Features
-
- Add configurable rate limiting for the creation of rooms. ([\#18514](https://github.com/element-hq/synapse/issues/18514))
- Add support for [MSC4293](https://github.com/matrix-org/matrix-spec-proposals/pull/4293) - Redact on Kick/Ban. ([\#18540](https://github.com/element-hq/synapse/issues/18540))
- When admins enable themselves to see soft-failed events, they will also see if the cause is due to the policy server flagging them as spam via `unsigned`. ([\#18585](https://github.com/element-hq/synapse/issues/18585))
- Add ability to configure forward/outbound proxy via homeserver config instead of environment variables. See `http_proxy`, `https_proxy`, `no_proxy_hosts`. ([\#18686](https://github.com/element-hq/synapse/issues/18686))
- Advertise experimental support for [MSC4306](https://github.com/matrix-org/matrix-spec-proposals/pull/4306) (Thread Subscriptions) through `/_matrix/clients/versions` if enabled. ([\#18722](https://github.com/element-hq/synapse/issues/18722))
- Stabilise support for delegating authentication to [Matrix Authentication Service](https://github.com/element-hq/matrix-authentication-service/). ([\#18759](https://github.com/element-hq/synapse/issues/18759))
- Implement the push rules for experimental [MSC4306: Thread Subscriptions](https://github.com/matrix-org/matrix-doc/issues/4306). ([\#18762](https://github.com/element-hq/synapse/issues/18762))
-
-### Bugfixes
-
- Allow return code 403 (allowed by C2S Spec since v1.2) when fetching profiles via federation. ([\#18696](https://github.com/element-hq/synapse/issues/18696))
- Register the MSC4306 (Thread Subscriptions) endpoints in the CS API when the experimental feature is enabled. ([\#18726](https://github.com/element-hq/synapse/issues/18726))
- Fix a long-standing bug where suspended users could not have server notices sent to them (a 403 was returned to the admin). ([\#18750](https://github.com/element-hq/synapse/issues/18750))
- Fix an issue that could cause logcontexts to be lost on rate-limited requests. Found by @realtyem. ([\#18763](https://github.com/element-hq/synapse/issues/18763))
- Fix invalidation of storage cache that was broken in 1.135.0. ([\#18786](https://github.com/element-hq/synapse/issues/18786))
-
-### Improved Documentation
-
- Minor improvements to README. ([\#18700](https://github.com/element-hq/synapse/issues/18700))
- Document that there can be multiple workers handling the `receipts` stream. ([\#18760](https://github.com/element-hq/synapse/issues/18760))
- Improve worker documentation for some device paths. ([\#18761](https://github.com/element-hq/synapse/issues/18761))
-
-### Deprecations and Removals
-
- Deprecate `run_as_background_process` exported as part of the module API interface in favor of `ModuleApi.run_as_background_process`. See [the relevant section in the upgrade notes](https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11360) for more information. ([\#18737](https://github.com/element-hq/synapse/issues/18737))
-
-### Internal Changes
-
- Add debug logging for HMAC digest verification failures when using the admin API to register users. ([\#18474](https://github.com/element-hq/synapse/issues/18474))
- Speed up upgrading a room with large numbers of banned users. ([\#18574](https://github.com/element-hq/synapse/issues/18574))
- Fix config documentation generation script on Windows by enforcing UTF-8. ([\#18580](https://github.com/element-hq/synapse/issues/18580))
- Refactor cache, background process, `Counter`, `LaterGauge`, `GaugeBucketCollector`, `Histogram`, and `Gauge` metrics to be homeserver-scoped. ([\#18656](https://github.com/element-hq/synapse/issues/18656), [\#18714](https://github.com/element-hq/synapse/issues/18714), [\#18715](https://github.com/element-hq/synapse/issues/18715), [\#18724](https://github.com/element-hq/synapse/issues/18724), [\#18753](https://github.com/element-hq/synapse/issues/18753), [\#18725](https://github.com/element-hq/synapse/issues/18725), [\#18670](https://github.com/element-hq/synapse/issues/18670), [\#18748](https://github.com/element-hq/synapse/issues/18748), [\#18751](https://github.com/element-hq/synapse/issues/18751))
- Reduce database usage in Sliding Sync by not querying for background update completion after the update is known to be complete. ([\#18718](https://github.com/element-hq/synapse/issues/18718))
- Improve order of validation and ratelimiting in room creation. ([\#18723](https://github.com/element-hq/synapse/issues/18723))
- Bump minimum version bound on Twisted to 21.2.0. ([\#18727](https://github.com/element-hq/synapse/issues/18727), [\#18729](https://github.com/element-hq/synapse/issues/18729))
- Use `twisted.internet.testing` module in tests instead of deprecated `twisted.test.proto_helpers`. ([\#18728](https://github.com/element-hq/synapse/issues/18728))
- Remove obsolete `/send_event` replication endpoint. ([\#18730](https://github.com/element-hq/synapse/issues/18730))
- Update metrics linting to be able to handle custom metrics. ([\#18733](https://github.com/element-hq/synapse/issues/18733))
- Work around `twisted.protocols.amp.TooLong` error by reducing logging in some tests. ([\#18736](https://github.com/element-hq/synapse/issues/18736))
- Prevent "Move labelled issues to correct projects" GitHub Actions workflow from failing when an issue is already on the project board. ([\#18755](https://github.com/element-hq/synapse/issues/18755))
- Bump minimum supported Rust version (MSRV) to 1.82.0. Missed in [#18553](https://github.com/element-hq/synapse/pull/18553) (released in Synapse 1.134.0). ([\#18757](https://github.com/element-hq/synapse/issues/18757))
- Make `Clock.sleep(...)` return a coroutine, so that mypy can catch places where we don't await on it. ([\#18772](https://github.com/element-hq/synapse/issues/18772))
- Update implementation of [MSC4306: Thread Subscriptions](https://github.com/matrix-org/matrix-doc/issues/4306) to include automatic subscription conflict prevention as introduced in later drafts. ([\#18756](https://github.com/element-hq/synapse/issues/18756))
-
-
-
-### Updates to locked dependencies
-
-* Bump gitpython from 3.1.44 to 3.1.45. ([\#18743](https://github.com/element-hq/synapse/issues/18743))
-* Bump mypy-zope from 1.0.12 to 1.0.13. ([\#18744](https://github.com/element-hq/synapse/issues/18744))
-* Bump phonenumbers from 9.0.9 to 9.0.10. ([\#18741](https://github.com/element-hq/synapse/issues/18741))
-* Bump ruff from 0.12.4 to 0.12.5. ([\#18742](https://github.com/element-hq/synapse/issues/18742))
-* Bump sentry-sdk from 2.32.0 to 2.33.2. ([\#18745](https://github.com/element-hq/synapse/issues/18745))
-* Bump tokio from 1.46.1 to 1.47.0. ([\#18740](https://github.com/element-hq/synapse/issues/18740))
-* Bump types-jsonschema from 4.24.0.20250708 to 4.25.0.20250720. ([\#18703](https://github.com/element-hq/synapse/issues/18703))
-* Bump types-psycopg2 from 2.9.21.20250516 to 2.9.21.20250718. ([\#18706](https://github.com/element-hq/synapse/issues/18706))
-
-# Synapse 1.135.0 (2025-08-01)
-
-No significant changes since 1.135.0rc2.
-
-
-
-
-# Synapse 1.135.0rc2 (2025-07-30)
-
-### Bugfixes
-
- Fix user failing to deactivate with MAS when `/_synapse/mas` is handled by a worker. ([\#18716](https://github.com/element-hq/synapse/issues/18716))
-
-### Internal Changes
-
- Fix performance regression introduced in [#18238](https://github.com/element-hq/synapse/issues/18238) by adding a cache to `is_server_admin`. ([\#18747](https://github.com/element-hq/synapse/issues/18747))
-
-
-
-
-# Synapse 1.135.0rc1 (2025-07-22)
-
-### Features
-
- Add `recaptcha_private_key_path` and `recaptcha_public_key_path` config option. ([\#17984](https://github.com/element-hq/synapse/issues/17984), [\#18684](https://github.com/element-hq/synapse/issues/18684))
- Add plain-text handling for rich-text topics as per [MSC3765](https://github.com/matrix-org/matrix-spec-proposals/pull/3765). ([\#18195](https://github.com/element-hq/synapse/issues/18195))
- If enabled by the user, server admins will see [soft failed](https://spec.matrix.org/v1.13/server-server-api/#soft-failure) events over the Client-Server API. ([\#18238](https://github.com/element-hq/synapse/issues/18238))
- Add experimental support for [MSC4277: Harmonizing the reporting endpoints](https://github.com/matrix-org/matrix-spec-proposals/pull/4277). ([\#18263](https://github.com/element-hq/synapse/issues/18263))
- Add ability to limit amount of media uploaded by a user in a given time period. ([\#18527](https://github.com/element-hq/synapse/issues/18527))
- Enable workers to write directly to the device lists stream and handle device list updates, reducing load on the main process. ([\#18581](https://github.com/element-hq/synapse/issues/18581))
- Support arbitrary profile fields. Contributed by @clokep. ([\#18635](https://github.com/element-hq/synapse/issues/18635))
- Advertise support for Matrix v1.12. ([\#18647](https://github.com/element-hq/synapse/issues/18647))
- Add an option to issue redactions as an admin user via the [admin redaction endpoint](https://element-hq.github.io/synapse/latest/admin_api/user_admin_api.html#redact-all-the-events-of-a-user). ([\#18671](https://github.com/element-hq/synapse/issues/18671))
- Add experimental and incomplete support for [MSC4306: Thread Subscriptions](https://github.com/matrix-org/matrix-spec-proposals/blob/rei/msc_thread_subscriptions/proposals/4306-thread-subscriptions.md). ([\#18674](https://github.com/element-hq/synapse/issues/18674))
- Include `event_id` when getting state with `?format=event`. Contributed by @tulir @ Beeper. ([\#18675](https://github.com/element-hq/synapse/issues/18675))
-
-### Bugfixes
-
- Fix CPU and database spinning when retrying sending events to servers whilst at the same time purging those events. ([\#18499](https://github.com/element-hq/synapse/issues/18499))
- Don't allow creation of tags with names longer than 255 bytes, [as per the spec](https://spec.matrix.org/v1.15/client-server-api/#events-14). ([\#18660](https://github.com/element-hq/synapse/issues/18660))
- Fix `sliding_sync_connections`-related errors when porting from SQLite to Postgres. ([\#18677](https://github.com/element-hq/synapse/issues/18677))
- Fix the MAS integration not working when Synapse is started with `--daemonize` or using `synctl`. ([\#18691](https://github.com/element-hq/synapse/issues/18691))
-
-### Improved Documentation
-
- Document that some config options for the user directory are in violation of the Matrix spec. ([\#18548](https://github.com/element-hq/synapse/issues/18548))
- Update `rc_delayed_event_mgmt` docs to the actual nesting level. Contributed by @HarHarLinks. ([\#18692](https://github.com/element-hq/synapse/issues/18692))
-
-### Internal Changes
-
- Add a dedicated internal API for Matrix Authentication Service to Synapse communication. ([\#18520](https://github.com/element-hq/synapse/issues/18520))
- Allow user registrations to be done on workers. ([\#18552](https://github.com/element-hq/synapse/issues/18552))
- Remove unnecessary HTTP replication calls. ([\#18564](https://github.com/element-hq/synapse/issues/18564))
- Refactor `Measure` block metrics to be homeserver-scoped. ([\#18601](https://github.com/element-hq/synapse/issues/18601))
- Refactor cache metrics to be homeserver-scoped. ([\#18604](https://github.com/element-hq/synapse/issues/18604))
- Unbreak "Latest dependencies" workflow by using the `--without dev` poetry option instead of removed `--no-dev`. ([\#18617](https://github.com/element-hq/synapse/issues/18617))
- Update URL Preview code to work with `lxml` 6.0.0+. ([\#18622](https://github.com/element-hq/synapse/issues/18622))
- Use `markdown-it-py` instead of `commonmark` in the release script. ([\#18637](https://github.com/element-hq/synapse/issues/18637))
- Fix typing errors with upgraded mypy version. ([\#18653](https://github.com/element-hq/synapse/issues/18653))
- Add doc comment explaining that config files are shallowly merged. ([\#18664](https://github.com/element-hq/synapse/issues/18664))
- Minor speed up of insertion into `stream_positions` table. ([\#18672](https://github.com/element-hq/synapse/issues/18672))
- Remove unused `allow_no_prev_events` option when creating an event. ([\#18676](https://github.com/element-hq/synapse/issues/18676))
- Clean up `MetricsResource` and Prometheus hacks. ([\#18687](https://github.com/element-hq/synapse/issues/18687))
- Fix dirty `Cargo.lock` changes appearing after install (`base64`). ([\#18689](https://github.com/element-hq/synapse/issues/18689))
- Prevent dirty `Cargo.lock` changes from install. ([\#18693](https://github.com/element-hq/synapse/issues/18693))
- Correct spelling of 'Admin token used' log line. ([\#18697](https://github.com/element-hq/synapse/issues/18697))
- Reduce log spam when client stops downloading media while it is being streamed to them. ([\#18699](https://github.com/element-hq/synapse/issues/18699))
-
-
-
-### Updates to locked dependencies
-
-* Bump authlib from 1.6.0 to 1.6.1. ([\#18704](https://github.com/element-hq/synapse/issues/18704))
-* Bump base64 from 0.21.7 to 0.22.1. ([\#18666](https://github.com/element-hq/synapse/issues/18666))
-* Bump jsonschema from 4.24.0 to 4.25.0. ([\#18707](https://github.com/element-hq/synapse/issues/18707))
-* Bump lxml from 5.4.0 to 6.0.0. ([\#18631](https://github.com/element-hq/synapse/issues/18631))
-* Bump mypy from 1.13.0 to 1.16.1. ([\#18653](https://github.com/element-hq/synapse/issues/18653))
-* Bump once_cell from 1.19.0 to 1.21.3. ([\#18710](https://github.com/element-hq/synapse/issues/18710))
-* Bump phonenumbers from 9.0.8 to 9.0.9. ([\#18681](https://github.com/element-hq/synapse/issues/18681))
-* Bump ruff from 0.12.2 to 0.12.5. ([\#18683](https://github.com/element-hq/synapse/issues/18683), [\#18705](https://github.com/element-hq/synapse/issues/18705))
-* Bump serde_json from 1.0.140 to 1.0.141. ([\#18709](https://github.com/element-hq/synapse/issues/18709))
-* Bump sigstore/cosign-installer from 3.9.1 to 3.9.2. ([\#18708](https://github.com/element-hq/synapse/issues/18708))
-* Bump types-jsonschema from 4.24.0.20250528 to 4.24.0.20250708. ([\#18682](https://github.com/element-hq/synapse/issues/18682))
-
-# Synapse 1.134.0 (2025-07-15)
-
-No significant changes since 1.134.0rc1.
-
-
-
-
-# Synapse 1.134.0rc1 (2025-07-09)
-
-### Features
-
- Support for [MSC4235](https://github.com/matrix-org/matrix-spec-proposals/pull/4235): `via` query param for hierarchy endpoint. Contributed by Krishan (@kfiven). ([\#18070](https://github.com/element-hq/synapse/issues/18070))
- Add `forget_forced_upon_leave` capability as per [MSC4267](https://github.com/matrix-org/matrix-spec-proposals/pull/4267). ([\#18196](https://github.com/element-hq/synapse/issues/18196))
- Add `federated_user_may_invite` spam checker callback which receives the entire invite event. Contributed by @tulir @ Beeper. ([\#18241](https://github.com/element-hq/synapse/issues/18241))
-
-### Bugfixes
-
- Fix `KeyError` on background updates when using split main/state databases. ([\#18509](https://github.com/element-hq/synapse/issues/18509))
- Improve performance of device deletion by adding missing index. ([\#18582](https://github.com/element-hq/synapse/issues/18582))
- Fix `avatar_url` and `displayname` being sent on federation profile queries when they are not set. ([\#18593](https://github.com/element-hq/synapse/issues/18593))
- Respond with 401 & `M_USER_LOCKED` when a locked user calls `POST /login`, as per the spec. ([\#18594](https://github.com/element-hq/synapse/issues/18594))
- Ensure policy servers are not asked to scan policy server change events, allowing rooms to disable the use of a policy server while the policy server is down. ([\#18605](https://github.com/element-hq/synapse/issues/18605))
-
-### Improved Documentation
-
- Fix documentation of the Delete Room Admin API's status field. ([\#18519](https://github.com/element-hq/synapse/issues/18519))
-
-### Deprecations and Removals
-
- Stop adding the "origin" field to newly-created events (PDUs). ([\#18418](https://github.com/element-hq/synapse/issues/18418))
-
-### Internal Changes
-
- Replace `PyICU` crate with equivalent `icu_segmenter` Rust crate. ([\#18553](https://github.com/element-hq/synapse/issues/18553), [\#18646](https://github.com/element-hq/synapse/issues/18646))
- Improve docstring on `simple_upsert_many`. ([\#18573](https://github.com/element-hq/synapse/issues/18573))
- Raise poetry-core version cap to 2.1.3. ([\#18575](https://github.com/element-hq/synapse/issues/18575))
- Raise setuptools_rust version cap to 1.11.1. ([\#18576](https://github.com/element-hq/synapse/issues/18576))
- Better handling of ratelimited requests. ([\#18595](https://github.com/element-hq/synapse/issues/18595), [\#18600](https://github.com/element-hq/synapse/issues/18600))
- Update to Rust 1.87.0 in CI, and bump the pinned commit of the `dtolnay/rust-toolchain` GitHub Action to `b3b07ba8b418998c39fb20f53e8b695cdcc8de1b`. ([\#18596](https://github.com/element-hq/synapse/issues/18596))
- Speed up bulk device deletion. ([\#18602](https://github.com/element-hq/synapse/issues/18602))
- Speed up the building of arm-based wheels in CI. ([\#18618](https://github.com/element-hq/synapse/issues/18618))
- Speed up the building of Docker images in CI. ([\#18620](https://github.com/element-hq/synapse/issues/18620))
- Add `.zed/` directory to `.gitignore`. ([\#18623](https://github.com/element-hq/synapse/issues/18623))
- Log the room ID we're purging state for. ([\#18625](https://github.com/element-hq/synapse/issues/18625))
-
-
-
-### Updates to locked dependencies
-
-* Bump Swatinem/rust-cache from 2.7.8 to 2.8.0. ([\#18612](https://github.com/element-hq/synapse/issues/18612))
-* Bump attrs from 24.2.0 to 25.3.0. ([\#18649](https://github.com/element-hq/synapse/issues/18649))
-* Bump authlib from 1.5.2 to 1.6.0. ([\#18642](https://github.com/element-hq/synapse/issues/18642))
-* Bump base64 from 0.21.7 to 0.22.1. ([\#18589](https://github.com/element-hq/synapse/issues/18589))
-* Bump base64 from 0.21.7 to 0.22.1. ([\#18629](https://github.com/element-hq/synapse/issues/18629))
-* Bump docker/build-push-action from 6.17.0 to 6.18.0. ([\#18497](https://github.com/element-hq/synapse/issues/18497))
-* Bump docker/setup-buildx-action from 3.10.0 to 3.11.1. ([\#18587](https://github.com/element-hq/synapse/issues/18587))
-* Bump hiredis from 3.1.0 to 3.2.1. ([\#18638](https://github.com/element-hq/synapse/issues/18638))
-* Bump ijson from 3.3.0 to 3.4.0. ([\#18650](https://github.com/element-hq/synapse/issues/18650))
-* Bump jsonschema from 4.23.0 to 4.24.0. ([\#18630](https://github.com/element-hq/synapse/issues/18630))
-* Bump msgpack from 1.1.0 to 1.1.1. ([\#18651](https://github.com/element-hq/synapse/issues/18651))
-* Bump mypy-zope from 1.0.11 to 1.0.12. ([\#18640](https://github.com/element-hq/synapse/issues/18640))
-* Bump phonenumbers from 9.0.2 to 9.0.8. ([\#18652](https://github.com/element-hq/synapse/issues/18652))
-* Bump pillow from 11.2.1 to 11.3.0. ([\#18624](https://github.com/element-hq/synapse/issues/18624))
-* Bump prometheus-client from 0.21.0 to 0.22.1. ([\#18609](https://github.com/element-hq/synapse/issues/18609))
-* Bump pyasn1-modules from 0.4.1 to 0.4.2. ([\#18495](https://github.com/element-hq/synapse/issues/18495))
-* Bump pydantic from 2.11.4 to 2.11.7. ([\#18639](https://github.com/element-hq/synapse/issues/18639))
-* Bump reqwest from 0.12.15 to 0.12.20. ([\#18590](https://github.com/element-hq/synapse/issues/18590))
-* Bump reqwest from 0.12.20 to 0.12.22. ([\#18627](https://github.com/element-hq/synapse/issues/18627))
-* Bump ruff from 0.11.11 to 0.12.1. ([\#18645](https://github.com/element-hq/synapse/issues/18645))
-* Bump ruff from 0.12.1 to 0.12.2. ([\#18657](https://github.com/element-hq/synapse/issues/18657))
-* Bump sentry-sdk from 2.22.0 to 2.32.0. ([\#18633](https://github.com/element-hq/synapse/issues/18633))
-* Bump setuptools-rust from 1.10.2 to 1.11.1. ([\#18655](https://github.com/element-hq/synapse/issues/18655))
-* Bump sigstore/cosign-installer from 3.8.2 to 3.9.0. ([\#18588](https://github.com/element-hq/synapse/issues/18588))
-* Bump sigstore/cosign-installer from 3.9.0 to 3.9.1. ([\#18608](https://github.com/element-hq/synapse/issues/18608))
-* Bump stefanzweifel/git-auto-commit-action from 5.2.0 to 6.0.1. ([\#18607](https://github.com/element-hq/synapse/issues/18607))
-* Bump tokio from 1.45.1 to 1.46.0. ([\#18628](https://github.com/element-hq/synapse/issues/18628))
-* Bump tokio from 1.46.0 to 1.46.1. ([\#18667](https://github.com/element-hq/synapse/issues/18667))
-* Bump treq from 24.9.1 to 25.5.0. ([\#18610](https://github.com/element-hq/synapse/issues/18610))
-* Bump types-bleach from 6.2.0.20241123 to 6.2.0.20250514. ([\#18634](https://github.com/element-hq/synapse/issues/18634))
-* Bump types-jsonschema from 4.23.0.20250516 to 4.24.0.20250528. ([\#18611](https://github.com/element-hq/synapse/issues/18611))
-* Bump types-opentracing from 2.4.10.6 to 2.4.10.20250622. ([\#18586](https://github.com/element-hq/synapse/issues/18586))
-* Bump types-psycopg2 from 2.9.21.20250318 to 2.9.21.20250516. ([\#18658](https://github.com/element-hq/synapse/issues/18658))
-* Bump types-pyyaml from 6.0.12.20241230 to 6.0.12.20250516. ([\#18643](https://github.com/element-hq/synapse/issues/18643))
-* Bump types-setuptools from 75.2.0.20241019 to 80.9.0.20250529. ([\#18644](https://github.com/element-hq/synapse/issues/18644))
-* Bump typing-extensions from 4.12.2 to 4.14.0. ([\#18654](https://github.com/element-hq/synapse/issues/18654))
-* Bump typing-extensions from 4.14.0 to 4.14.1. ([\#18668](https://github.com/element-hq/synapse/issues/18668))
-* Bump urllib3 from 2.2.2 to 2.5.0. ([\#18572](https://github.com/element-hq/synapse/issues/18572))
-
-# Synapse 1.133.0 (2025-07-01)
-
-Pre-built wheels are now built using the [manylinux_2_28](https://github.com/pypa/manylinux#manylinux_2_28-almalinux-8-based) base, which is expected to be compatible with distros using glibc 2.28 or later, including:
-
- - Debian 10+
- - Ubuntu 18.10+
- - Fedora 29+
- - CentOS/RHEL 8+
-
-Previously, wheels were built using the [manylinux2014](https://github.com/pypa/manylinux#manylinux2014-centos-7-based-glibc-217) base, which was expected to be compatible with distros using glibc 2.17 or later.
-
-### Bugfixes
-
- Bump `cibuildwheel` to 3.0.0 to fix the `manylinux` wheel builds. ([\#18615](https://github.com/element-hq/synapse/issues/18615))
-
-
-
-
-# Synapse 1.133.0rc1 (2025-06-24)
-
-### Features
-
- Add support for the [MSC4260 user report API](https://github.com/matrix-org/matrix-spec-proposals/pull/4260). ([\#18120](https://github.com/element-hq/synapse/issues/18120))
-
-### Bugfixes
-
- Fix an issue where, during state resolution for v11 rooms, Synapse would incorrectly calculate the power level of the creator when there was no power levels event in the room. ([\#18534](https://github.com/element-hq/synapse/issues/18534), [\#18547](https://github.com/element-hq/synapse/issues/18547))
- Fix long-standing bug where sliding sync did not honour the `room_id_to_include` config option. ([\#18535](https://github.com/element-hq/synapse/issues/18535))
- Fix an issue where "Lock timeout is getting excessive" warnings would be logged even when the lock timeout was <10 minutes. ([\#18543](https://github.com/element-hq/synapse/issues/18543))
- Fix an issue where Synapse could calculate the wrong power level for the creator of the room if there was no power levels event. ([\#18545](https://github.com/element-hq/synapse/issues/18545))
-
-### Improved Documentation
-
- Generate config documentation from JSON Schema file. ([\#18528](https://github.com/element-hq/synapse/issues/18528))
- Fix typo in user type documentation. ([\#18568](https://github.com/element-hq/synapse/issues/18568))
-
-### Internal Changes
-
- Increase performance of introspecting access tokens when using delegated auth. ([\#18357](https://github.com/element-hq/synapse/issues/18357), [\#18561](https://github.com/element-hq/synapse/issues/18561))
- Log user deactivations. ([\#18541](https://github.com/element-hq/synapse/issues/18541))
- Enable [`flake8-logging`](https://docs.astral.sh/ruff/rules/#flake8-logging-log) and [`flake8-logging-format`](https://docs.astral.sh/ruff/rules/#flake8-logging-format-g) rules in Ruff and fix related issues throughout the codebase. ([\#18542](https://github.com/element-hq/synapse/issues/18542))
- Clean up old, unused rows from the `device_federation_inbox` table. ([\#18546](https://github.com/element-hq/synapse/issues/18546))
- Run config schema CI on develop and release branches. ([\#18551](https://github.com/element-hq/synapse/issues/18551))
- Add support for Twisted `25.5.0`+ releases. ([\#18577](https://github.com/element-hq/synapse/issues/18577))
- Update PyO3 to version 0.25. ([\#18578](https://github.com/element-hq/synapse/issues/18578))
-
-
-
-### Updates to locked dependencies
-
-* Bump actions/setup-python from 5.5.0 to 5.6.0. ([\#18555](https://github.com/element-hq/synapse/issues/18555))
-* Bump base64 from 0.21.7 to 0.22.1. ([\#18559](https://github.com/element-hq/synapse/issues/18559))
-* Bump dawidd6/action-download-artifact from 9 to 11. ([\#18556](https://github.com/element-hq/synapse/issues/18556))
-* Bump headers from 0.4.0 to 0.4.1. ([\#18529](https://github.com/element-hq/synapse/issues/18529))
-* Bump requests from 2.32.2 to 2.32.4. ([\#18533](https://github.com/element-hq/synapse/issues/18533))
-* Bump types-requests from 2.32.0.20250328 to 2.32.4.20250611. ([\#18558](https://github.com/element-hq/synapse/issues/18558))
-
-# Synapse 1.132.0 (2025-06-17)
-
-### Improved Documentation
-
- Improvements to generate config documentation from JSON Schema file. ([\#18522](https://github.com/element-hq/synapse/issues/18522))
-
-
-
-
-# Synapse 1.132.0rc1 (2025-06-10)
-
-### Features
-
- Add support for [MSC4155](https://github.com/matrix-org/matrix-spec-proposals/pull/4155) Invite Filtering. ([\#18288](https://github.com/element-hq/synapse/issues/18288))
- Add experimental `user_may_send_state_event` module API callback. ([\#18455](https://github.com/element-hq/synapse/issues/18455))
- Add experimental `get_media_config_for_user` and `is_user_allowed_to_upload_media_of_size` module API callbacks that allow overriding of media repository maximum upload size. ([\#18457](https://github.com/element-hq/synapse/issues/18457))
- Add experimental `get_ratelimit_override_for_user` module API callback that allows overriding of per-user ratelimits. ([\#18458](https://github.com/element-hq/synapse/issues/18458))
- Pass `room_config` argument to `user_may_create_room` spam checker module callback. ([\#18486](https://github.com/element-hq/synapse/issues/18486))
- Support configuration of default and extra user types. ([\#18456](https://github.com/element-hq/synapse/issues/18456))
- Successful requests to `/_matrix/app/v1/ping` will now force Synapse to reattempt delivering transactions to appservices. ([\#18521](https://github.com/element-hq/synapse/issues/18521))
- Support the import of the `RatelimitOverride` type from `synapse.module_api` in modules and rename `messages_per_second` to `per_second`. ([\#18513](https://github.com/element-hq/synapse/issues/18513))
-
-### Bugfixes
-
- Remove destinations from sending if not whitelisted. ([\#18484](https://github.com/element-hq/synapse/issues/18484))
- Fixed room summary API incorrectly returning that a room is private in the room summary response when the join rule is omitted by the remote server. Contributed by @nexy7574. ([\#18493](https://github.com/element-hq/synapse/issues/18493))
- Prevent users from adding themselves to their own user ignore list. ([\#18508](https://github.com/element-hq/synapse/issues/18508))
-
-### Improved Documentation
-
- Generate config documentation from JSON Schema file. ([\#17892](https://github.com/element-hq/synapse/issues/17892))
- Mention `CAP_NET_BIND_SERVICE` as an alternative to running Synapse as root in order to bind to a privileged port. ([\#18408](https://github.com/element-hq/synapse/issues/18408))
- Surface hidden Admin API documentation regarding fetching of scheduled tasks. ([\#18516](https://github.com/element-hq/synapse/issues/18516))
- Mark the new module APIs in this release as experimental. ([\#18536](https://github.com/element-hq/synapse/issues/18536))
-
-### Internal Changes
-
- Mark dehydrated devices in the [List All User Devices Admin API](https://element-hq.github.io/synapse/latest/admin_api/user_admin_api.html#list-all-devices). ([\#18252](https://github.com/element-hq/synapse/issues/18252))
- Reduce disk wastage by cleaning up `received_transactions` older than 1 day, rather than 30 days. ([\#18310](https://github.com/element-hq/synapse/issues/18310))
- Distinguish all vs local events being persisted in the "Event Send Time Quantiles" graph (Grafana). ([\#18510](https://github.com/element-hq/synapse/issues/18510))
-
-
-
-
-# Synapse 1.131.0 (2025-06-03)
-
-No significant changes since 1.131.0rc1.
-
-# Synapse 1.131.0rc1 (2025-05-28)
-
-### Features
-
- Add `msc4263_limit_key_queries_to_users_who_share_rooms` config option as per [MSC4263](https://github.com/matrix-org/matrix-spec-proposals/pull/4263). ([\#18180](https://github.com/element-hq/synapse/issues/18180))
- Add option to allow registrations that begin with `_`. Contributed by `_` (@hex5f). ([\#18262](https://github.com/element-hq/synapse/issues/18262))
- Include room ID in response to the [Room Deletion Status Admin API](https://element-hq.github.io/synapse/latest/admin_api/rooms.html#status-of-deleting-rooms). ([\#18318](https://github.com/element-hq/synapse/issues/18318))
- Add support for calling Policy Servers ([MSC4284](https://github.com/matrix-org/matrix-spec-proposals/pull/4284)) to mark events as spam. ([\#18387](https://github.com/element-hq/synapse/issues/18387))
-
-### Bugfixes
-
- Prevent race-condition in `_maybe_retry_device_resync` entrance. ([\#18391](https://github.com/element-hq/synapse/issues/18391))
- Fix the `tests.handlers.test_worker_lock.WorkerLockTestCase.test_lock_contention` test which could spuriously time out on RISC-V architectures due to performance differences. ([\#18430](https://github.com/element-hq/synapse/issues/18430))
- Fix admin redaction endpoint not redacting encrypted messages. ([\#18434](https://github.com/element-hq/synapse/issues/18434))
-
-### Improved Documentation
-
- Update `room_list_publication_rules` docs to consider defaults that changed in v1.126.0. Contributed by @HarHarLinks. ([\#18286](https://github.com/element-hq/synapse/issues/18286))
- Add advice for upgrading between major PostgreSQL versions to the database documentation. ([\#18445](https://github.com/element-hq/synapse/issues/18445))
-
-### Internal Changes
-
- Fix a memory leak in `_NotifierUserStream`. ([\#18380](https://github.com/element-hq/synapse/issues/18380))
- Fix a couple type annotations in the `RootConfig`/`Config`. ([\#18409](https://github.com/element-hq/synapse/issues/18409))
- Explicitly enable PyPy builds in `cibuildwheel`s config to avoid it being disabled on a future upgrade to `cibuildwheel` v3. ([\#18417](https://github.com/element-hq/synapse/issues/18417))
- Update the PR review template to remove an erroneous line break from the final bullet point. ([\#18419](https://github.com/element-hq/synapse/issues/18419))
- Explain why we `flush_buffer()` for Python `print(...)` output. ([\#18420](https://github.com/element-hq/synapse/issues/18420))
- Add lint to ensure we don't add a `CREATE/DROP INDEX` in a schema delta. ([\#18440](https://github.com/element-hq/synapse/issues/18440))
- Allow checking only for the existence of a field in an SSO provider's response, rather than requiring the value(s) to check. ([\#18454](https://github.com/element-hq/synapse/issues/18454))
- Add unit tests for homeserver usage statistics. ([\#18463](https://github.com/element-hq/synapse/issues/18463))
- Don't move invited users to new room when shutting down room. ([\#18471](https://github.com/element-hq/synapse/issues/18471))
-
-
-
-### Updates to locked dependencies
-
-* Bump actions/setup-python from 5.5.0 to 5.6.0. ([\#18398](https://github.com/element-hq/synapse/issues/18398))
-* Bump authlib from 1.5.1 to 1.5.2. ([\#18452](https://github.com/element-hq/synapse/issues/18452))
-* Bump docker/build-push-action from 6.15.0 to 6.17.0. ([\#18397](https://github.com/element-hq/synapse/issues/18397), [\#18449](https://github.com/element-hq/synapse/issues/18449))
-* Bump lxml from 5.3.0 to 5.4.0. ([\#18480](https://github.com/element-hq/synapse/issues/18480))
-* Bump mypy-zope from 1.0.9 to 1.0.11. ([\#18428](https://github.com/element-hq/synapse/issues/18428))
-* Bump pyo3 from 0.23.5 to 0.24.2. ([\#18460](https://github.com/element-hq/synapse/issues/18460))
-* Bump pyo3-log from 0.12.3 to 0.12.4. ([\#18453](https://github.com/element-hq/synapse/issues/18453))
-* Bump pyopenssl from 25.0.0 to 25.1.0. ([\#18450](https://github.com/element-hq/synapse/issues/18450))
-* Bump ruff from 0.7.3 to 0.11.11. ([\#18451](https://github.com/element-hq/synapse/issues/18451), [\#18482](https://github.com/element-hq/synapse/issues/18482))
-* Bump tornado from 6.4.2 to 6.5.0. ([\#18459](https://github.com/element-hq/synapse/issues/18459))
-* Bump setuptools from 72.1.0 to 78.1.1. ([\#18461](https://github.com/element-hq/synapse/issues/18461))
-* Bump types-jsonschema from 4.23.0.20241208 to 4.23.0.20250516. ([\#18481](https://github.com/element-hq/synapse/issues/18481))
-* Bump types-requests from 2.32.0.20241016 to 2.32.0.20250328. ([\#18427](https://github.com/element-hq/synapse/issues/18427))
-
-# Synapse 1.130.0 (2025-05-20)
-
-### Bugfixes
-
- Fix startup being blocked on creating a new index that was introduced in v1.130.0rc1. ([\#18439](https://github.com/element-hq/synapse/issues/18439))
- Fix the ordering of local messages in rooms that were affected by [GHSA-v56r-hwv5-mxg6](https://github.com/advisories/GHSA-v56r-hwv5-mxg6). ([\#18447](https://github.com/element-hq/synapse/issues/18447))
-
-
-
-
-# Synapse 1.130.0rc1 (2025-05-13)
-
-### Features
-
- Add an Admin API endpoint `GET /_synapse/admin/v1/scheduled_tasks`  to fetch scheduled tasks. ([\#18214](https://github.com/element-hq/synapse/issues/18214))
- Add config option `user_directory.exclude_remote_users` which, when enabled, excludes remote users from user directory search results. ([\#18300](https://github.com/element-hq/synapse/issues/18300))
- Add support for handling `GET /devices/` on workers. ([\#18355](https://github.com/element-hq/synapse/issues/18355))
-
-### Bugfixes
-
- Fix a longstanding bug where Synapse would immediately retry a failing push endpoint when a new event is received, ignoring any backoff timers. ([\#18363](https://github.com/element-hq/synapse/issues/18363))
- Pass leave from remote invite rejection down Sliding Sync. ([\#18375](https://github.com/element-hq/synapse/issues/18375))
-
-### Updates to the Docker image
-
- In `configure_workers_and_start.py`, use the same absolute path of Python in the interpreter shebang, and invoke child Python processes with `sys.executable`. ([\#18291](https://github.com/element-hq/synapse/issues/18291))
- Optimize the build of the workers image. ([\#18292](https://github.com/element-hq/synapse/issues/18292))
- In `start_for_complement.sh`, replace some external program calls with shell builtins. ([\#18293](https://github.com/element-hq/synapse/issues/18293))
- When generating container scripts from templates, don't add a leading newline so that their shebangs may be handled correctly. ([\#18295](https://github.com/element-hq/synapse/issues/18295))
-
-### Improved Documentation
-
- Improve formatting of the README file. ([\#18218](https://github.com/element-hq/synapse/issues/18218))
- Add documentation for configuring [Pocket ID](https://github.com/pocket-id/pocket-id) as an OIDC provider. ([\#18237](https://github.com/element-hq/synapse/issues/18237))
- Fix typo in docs about the `push` config option. Contributed by @HarHarLinks. ([\#18320](https://github.com/element-hq/synapse/issues/18320))
- Add `/_matrix/federation/v1/version` to list of federation endpoints that can be handled by workers. ([\#18377](https://github.com/element-hq/synapse/issues/18377))
- Add an Admin API endpoint `GET /_synapse/admin/v1/scheduled_tasks`  to fetch scheduled tasks. ([\#18384](https://github.com/element-hq/synapse/issues/18384))
-
-### Internal Changes
-
- Return specific error code when adding an email address / phone number to account is not supported ([MSC4178](https://github.com/matrix-org/matrix-spec-proposals/pull/4178)). ([\#17578](https://github.com/element-hq/synapse/issues/17578))
- Stop auto-provisionning missing users & devices when delegating auth to Matrix Authentication Service. Requires MAS 0.13.0 or later. ([\#18181](https://github.com/element-hq/synapse/issues/18181))
- Apply file hashing and existing quarantines to media downloaded for URL previews. ([\#18297](https://github.com/element-hq/synapse/issues/18297))
- Allow a few admin APIs used by matrix-authentication-service to run on workers. ([\#18313](https://github.com/element-hq/synapse/issues/18313))
- Apply `should_drop_federated_event` to federation invites. ([\#18330](https://github.com/element-hq/synapse/issues/18330))
- Allow `/rooms/` admin API to be run on workers. ([\#18360](https://github.com/element-hq/synapse/issues/18360))
- Minor performance improvements to the notifier. ([\#18367](https://github.com/element-hq/synapse/issues/18367))
- Slight performance increase when using the ratelimiter. ([\#18369](https://github.com/element-hq/synapse/issues/18369))
- Don't validate the `at_hash` (access token hash) field in OIDC ID Tokens if we don't end up actually using the OIDC Access Token. ([\#18374](https://github.com/element-hq/synapse/issues/18374), [\#18385](https://github.com/element-hq/synapse/issues/18385))
- Fixed test failures when using authlib 1.5.2. ([\#18390](https://github.com/element-hq/synapse/issues/18390))
- Refactor [MSC4186](https://github.com/matrix-org/matrix-spec-proposals/pull/4186) Simplified Sliding Sync room list tests to cover both new and fallback logic paths. ([\#18399](https://github.com/element-hq/synapse/issues/18399))
-
-
-
-### Updates to locked dependencies
-
-* Bump actions/add-to-project from 280af8ae1f83a494cfad2cb10f02f6d13529caa9 to 5b1a254a3546aef88e0a7724a77a623fa2e47c36. ([\#18365](https://github.com/element-hq/synapse/issues/18365))
-* Bump actions/download-artifact from 4.2.1 to 4.3.0. ([\#18364](https://github.com/element-hq/synapse/issues/18364))
-* Bump actions/setup-go from 5.4.0 to 5.5.0. ([\#18426](https://github.com/element-hq/synapse/issues/18426))
-* Bump anyhow from 1.0.97 to 1.0.98. ([\#18336](https://github.com/element-hq/synapse/issues/18336))
-* Bump packaging from 24.2 to 25.0. ([\#18393](https://github.com/element-hq/synapse/issues/18393))
-* Bump pillow from 11.1.0 to 11.2.1. ([\#18429](https://github.com/element-hq/synapse/issues/18429))
-* Bump pydantic from 2.10.3 to 2.11.4. ([\#18394](https://github.com/element-hq/synapse/issues/18394))
-* Bump pyo3-log from 0.12.2 to 0.12.3. ([\#18317](https://github.com/element-hq/synapse/issues/18317))
-* Bump pyopenssl from 24.3.0 to 25.0.0. ([\#18315](https://github.com/element-hq/synapse/issues/18315))
-* Bump sha2 from 0.10.8 to 0.10.9. ([\#18395](https://github.com/element-hq/synapse/issues/18395))
-* Bump sigstore/cosign-installer from 3.8.1 to 3.8.2. ([\#18366](https://github.com/element-hq/synapse/issues/18366))
-* Bump softprops/action-gh-release from 1 to 2. ([\#18264](https://github.com/element-hq/synapse/issues/18264))
-* Bump stefanzweifel/git-auto-commit-action from 5.1.0 to 5.2.0. ([\#18354](https://github.com/element-hq/synapse/issues/18354))
-* Bump txredisapi from 1.4.10 to 1.4.11. ([\#18392](https://github.com/element-hq/synapse/issues/18392))
-* Bump types-jsonschema from 4.23.0.20240813 to 4.23.0.20241208. ([\#18305](https://github.com/element-hq/synapse/issues/18305))
-* Bump types-psycopg2 from 2.9.21.20250121 to 2.9.21.20250318. ([\#18316](https://github.com/element-hq/synapse/issues/18316))
-
-# Synapse 1.129.0 (2025-05-06)
-
-No significant changes since 1.129.0rc2.
-
-
-
-
-# Synapse 1.129.0rc2 (2025-04-30)
-
-Synapse 1.129.0rc1 was never formally released due to regressions discovered during the release process. 1.129.0rc2 fixes those regressions by reverting the affected PRs.
-
-### Internal Changes
-
- Revert the slow background update introduced by [\#18068](https://github.com/element-hq/synapse/issues/18068) in v1.128.0. ([\#18372](https://github.com/element-hq/synapse/issues/18372))
- Revert "Add total event, unencrypted message, and e2ee event counts to stats reporting", added in v1.129.0rc1. ([\#18373](https://github.com/element-hq/synapse/issues/18373))
-
-
-
-
-# Synapse 1.129.0rc1 (2025-04-15)
-
-### Features
-
- Add `passthrough_authorization_parameters` in OIDC configuration to allow passing parameters to the authorization grant URL. ([\#18232](https://github.com/element-hq/synapse/issues/18232))
- Add `total_event_count`, `total_message_count`, and `total_e2ee_event_count` fields to the homeserver usage statistics. ([\#18260](https://github.com/element-hq/synapse/issues/18260))
-
-### Bugfixes
-
- Fix `force_tracing_for_users` config when using delegated auth. ([\#18334](https://github.com/element-hq/synapse/issues/18334))
- Fix the token introspection cache logging access tokens when MAS integration is in use. ([\#18335](https://github.com/element-hq/synapse/issues/18335))
- Stop caching introspection failures when delegating auth to MAS. ([\#18339](https://github.com/element-hq/synapse/issues/18339))
- Fix `ExternalIDReuse` exception after migrating to MAS on workers with a high traffic. ([\#18342](https://github.com/element-hq/synapse/issues/18342))
- Fix minor performance regression caused by tracking of room participation. Regressed in v1.128.0. ([\#18345](https://github.com/element-hq/synapse/issues/18345))
-
-### Updates to the Docker image
-
- Optimize the build of the complement-synapse image. ([\#18294](https://github.com/element-hq/synapse/issues/18294))
-
-### Internal Changes
-
- Disable statement timeout during room purge. ([\#18133](https://github.com/element-hq/synapse/issues/18133))
- Add cache to storage functions used to auth requests when using delegated auth. ([\#18337](https://github.com/element-hq/synapse/issues/18337))
-
-
-
-
 # Synapse 1.128.0 (2025-04-08)

 No significant changes since 1.128.0rc1.
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/README.rst
+++ b/README.rst
@@ -8,7 +8,7 @@
 Synapse is an open source `Matrix <https://matrix.org>`__ homeserver
 implementation, written and maintained by `Element <https://element.io>`_.
 `Matrix <https://github.com/matrix-org>`__ is the open standard for
-secure and interoperable real-time communications. You can directly run
+secure and interoperable real time communications. You can directly run
 and manage the source code in this repository, available under an AGPL
 license (or alternatively under a commercial license from Element).
 There is no support provided by Element unless you have a
@@ -23,13 +23,13 @@ ESS builds on Synapse to offer a complete Matrix-based backend including the ful
 `Admin Console product <https://element.io/enterprise-functionality/admin-console>`_,
 giving admins the power to easily manage an organization-wide
 deployment. It includes advanced identity management, auditing,
-moderation and data retention options as well as Long-Term Support and
-SLAs. ESS supports any Matrix-compatible client.
+moderation and data retention options as well as Long Term Support and
+SLAs. ESS can be used to support any Matrix-based frontend client.

 .. contents::

-🛠️ Installation and configuration
-==================================
+🛠️ Installing and configuration
+===============================

 The Synapse documentation describes `how to install Synapse <https://element-hq.github.io/synapse/latest/setup/installation.html>`_. We recommend using
 `Docker images <https://element-hq.github.io/synapse/latest/setup/installation.html#docker-images-and-ansible-playbooks>`_ or `Debian packages from Matrix.org
@@ -133,7 +133,7 @@ connect from a client: see
 An easy way to get started is to login or register via Element at
 https://app.element.io/#/login or https://app.element.io/#/register respectively.
 You will need to change the server you are logging into from ``matrix.org``
-and instead specify a homeserver URL of ``https://<server_name>:8448``
+and instead specify a Homeserver URL of ``https://<server_name>:8448``
 (or just ``https://<server_name>`` if you are using a reverse proxy).
 If you prefer to use another client, refer to our
 `client breakdown <https://matrix.org/ecosystem/clients/>`_.
@@ -162,15 +162,16 @@ the public internet. Without it, anyone can freely register accounts on your hom
 This can be exploited by attackers to create spambots targeting the rest of the Matrix
 federation.

-Your new Matrix ID will be formed partly from the ``server_name``, and partly
-from a localpart you specify when you create the account in the form of::
+Your new user name will be formed partly from the ``server_name``, and partly
+from a localpart you specify when you create the account. Your name will take
+the form of::

    @localpart:my.domain.name

 (pronounced "at localpart on my dot domain dot name").

 As when logging in, you will need to specify a "Custom server".  Specify your
-desired ``localpart`` in the 'Username' box.
+desired ``localpart`` in the 'User name' box.

 🎯 Troubleshooting and support
 ==============================
@@ -208,10 +209,10 @@ Identity servers have the job of mapping email addresses and other 3rd Party
 IDs (3PIDs) to Matrix user IDs, as well as verifying the ownership of 3PIDs
 before creating that mapping.

-**Identity servers do not store accounts or credentials - these are stored and managed on homeservers.
-Identity Servers are just for mapping 3rd Party IDs to Matrix IDs.**
+**They are not where accounts or credentials are stored - these live on home
+servers. Identity Servers are just for mapping 3rd party IDs to matrix IDs.**

-This process is highly security-sensitive, as there is an obvious risk of spam if it
+This process is very security-sensitive, as there is obvious risk of spam if it
 is too easy to sign up for Matrix accounts or harvest 3PID data. In the longer
 term, we hope to create a decentralised system to manage it (`matrix-doc #712
 <https://github.com/matrix-org/matrix-doc/issues/712>`_), but in the meantime,
@@ -237,9 +238,9 @@ email address.
 We welcome contributions to Synapse from the community!
 The best place to get started is our
 `guide for contributors <https://element-hq.github.io/synapse/latest/development/contributing_guide.html>`_.
-This is part of our broader `documentation <https://element-hq.github.io/synapse/latest>`_, which includes
-information for Synapse developers as well as Synapse administrators.
+This is part of our larger `documentation <https://element-hq.github.io/synapse/latest>`_, which includes

+information for Synapse developers as well as Synapse administrators.
 Developers might be particularly interested in:

 * `Synapse's database schema <https://element-hq.github.io/synapse/latest/development/database_schema.html>`_,
@@ -252,17 +253,15 @@ Alongside all that, join our developer community on Matrix:
 Copyright and Licensing
 =======================

-| Copyright 2014-2017 OpenMarket Ltd
-| Copyright 2017 Vector Creations Ltd
-| Copyright 2017-2025 New Vector Ltd
-|
+Copyright 2014-2017 OpenMarket Ltd
+Copyright 2017 Vector Creations Ltd
+Copyright 2017-2025 New Vector Ltd 

 This software is dual-licensed by New Vector Ltd (Element). It can be used either:
-
+  
 (1) for free under the terms of the GNU Affero General Public License (as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version); OR
-
+  
 (2) under the terms of a paid-for Element Commercial License agreement between you and Element (the terms of which may vary depending on what you and Element have agreed to).
-
 Unless required by applicable law or agreed to in writing, software distributed under the Licenses is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the Licenses for the specific language governing permissions and limitations under the Licenses.


--- a/build_rust.py
+++ b/build_rust.py
@@ -19,17 +19,17 @@ def build(setup_kwargs: Dict[str, Any]) -> None:
        # This flag is a no-op in the latest versions. Instead, we need to
        # specify this in the `bdist_wheel` config below.
        py_limited_api=True,
-        # We always build in release mode, as we can't distinguish
-        # between using `poetry` in development vs production.
+        # We force always building in release mode, as we can't tell the
+        # difference between using `poetry` in development vs production.
        debug=False,
    )
    setup_kwargs.setdefault("rust_extensions", []).append(extension)
    setup_kwargs["zip_safe"] = False

-    # We look up the minimum supported Python version with
-    # `python_requires` (e.g. ">=3.9.0,<4.0.0") and finding the first Python
+    # We lookup the minimum supported python version by looking at
+    # `python_requires` (e.g. ">=3.9.0,<4.0.0") and finding the first python
    # version that matches. We then convert that into the `py_limited_api` form,
-    # e.g. cp39 for Python 3.9.
+    # e.g. cp39 for python 3.9.
    py_limited_api: str
    python_bounds = SpecifierSet(setup_kwargs["python_requires"])
    for minor_version in itertools.count(start=8):
--- a/changelog.d/18133.misc
+++ b/changelog.d/18133.misc
@@ -0,0 +1 @@
+Disable statement timeout during room purge.
--- a/changelog.d/18232.feature
+++ b/changelog.d/18232.feature
@@ -0,0 +1 @@
+Add `passthrough_authorization_parameters` in OIDC configuration to allow to pass parameters to the authorization grant URL.
--- a/changelog.d/18294.docker
+++ b/changelog.d/18294.docker
@@ -0,0 +1 @@
+Optimize the build of the complement-synapse image.
--- a/changelog.d/18337.misc
+++ b/changelog.d/18337.misc
@@ -0,0 +1 @@
+Add cache to storage functions used to auth requests when using delegated auth.
--- a/changelog.d/18339.bugfix
+++ b/changelog.d/18339.bugfix
@@ -0,0 +1 @@
+Stop caching introspection failures when delegating auth to MAS.
--- a/changelog.d/18791.misc
+++ b/changelog.d/18791.misc
@@ -1 +0,0 @@
-Fix `LaterGauge` metrics to collect from all servers.
--- a/changelog.d/18871.misc
+++ b/changelog.d/18871.misc
@@ -1 +0,0 @@
-Store the `LoggingContext` in a `ContextVar` instead of a thread-local variable.
--- a/changelog.d/18878.docker
+++ b/changelog.d/18878.docker
@@ -1 +0,0 @@
-Suppress "Applying schema" log noise bulk when `SYNAPSE_LOG_TESTING` is set.
--- a/contrib/grafana/synapse.json
+++ b/contrib/grafana/synapse.json
@@ -220,24 +220,29 @@
      "yBucketBound": "auto"
    },
    {
-      "datasource": {
-        "uid": "${DS_PROMETHEUS}",
-        "type": "prometheus"
-      },
      "aliasColors": {},
+      "bars": false,
      "dashLength": 10,
+      "dashes": false,
+      "datasource": {
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "",
      "fieldConfig": {
        "defaults": {
          "links": []
        },
        "overrides": []
      },
+      "fill": 0,
+      "fillGradient": 0,
      "gridPos": {
        "h": 9,
        "w": 12,
        "x": 12,
        "y": 1
      },
+      "hiddenSeries": false,
      "id": 152,
      "legend": {
        "avg": false,
@@ -250,81 +255,71 @@
        "values": false
      },
      "lines": true,
+      "linewidth": 0,
+      "links": [],
      "nullPointMode": "connected",
      "options": {
        "alertThreshold": true
      },
      "paceLength": 10,
-      "pluginVersion": "10.4.3",
+      "percentage": false,
+      "pluginVersion": "9.2.2",
      "pointradius": 5,
+      "points": false,
      "renderer": "flot",
      "seriesOverrides": [
        {
          "alias": "Avg",
          "fill": 0,
-          "linewidth": 3,
-          "$$hashKey": "object:48"
+          "linewidth": 3
        },
        {
          "alias": "99%",
          "color": "#C4162A",
-          "fillBelowTo": "90%",
-          "$$hashKey": "object:49"
+          "fillBelowTo": "90%"
        },
        {
          "alias": "90%",
          "color": "#FF7383",
-          "fillBelowTo": "75%",
-          "$$hashKey": "object:50"
+          "fillBelowTo": "75%"
        },
        {
          "alias": "75%",
          "color": "#FFEE52",
-          "fillBelowTo": "50%",
-          "$$hashKey": "object:51"
+          "fillBelowTo": "50%"
        },
        {
          "alias": "50%",
          "color": "#73BF69",
-          "fillBelowTo": "25%",
-          "$$hashKey": "object:52"
+          "fillBelowTo": "25%"
        },
        {
          "alias": "25%",
          "color": "#1F60C4",
-          "fillBelowTo": "5%",
-          "$$hashKey": "object:53"
+          "fillBelowTo": "5%"
        },
        {
          "alias": "5%",
-          "lines": false,
-          "$$hashKey": "object:54"
+          "lines": false
        },
        {
          "alias": "Average",
          "color": "rgb(255, 255, 255)",
          "lines": true,
-          "linewidth": 3,
-          "$$hashKey": "object:55"
+          "linewidth": 3
        },
        {
-          "alias": "Local events being persisted",
-          "color": "#96d98D",
-          "points": true,
-          "yaxis": 2,
-          "zindex": -3,
-          "$$hashKey": "object:56"
-        },
-        {
-          "$$hashKey": "object:329",
+          "alias": "Events",
          "color": "#B877D9",
-          "alias": "All events being persisted",
+          "hideTooltip": true,
          "points": true,
          "yaxis": 2,
          "zindex": -3
        }
      ],
      "spaceLength": 10,
+      "stack": false,
+      "steppedLine": false,
      "targets": [
        {
          "datasource": {
@@ -389,20 +384,7 @@
          },
          "expr": "sum(rate(synapse_http_server_response_time_seconds_sum{servlet='RoomSendEventRestServlet',index=~\"$index\",instance=\"$instance\",code=~\"2..\"}[$bucket_size])) / sum(rate(synapse_http_server_response_time_seconds_count{servlet='RoomSendEventRestServlet',index=~\"$index\",instance=\"$instance\",code=~\"2..\"}[$bucket_size]))",
          "legendFormat": "Average",
-          "refId": "H",
-          "editorMode": "code",
-          "range": true
-        },
-        {
-          "datasource": {
-            "uid": "${DS_PROMETHEUS}"
-          },
-          "expr": "sum(rate(synapse_http_server_response_time_seconds_count{servlet='RoomSendEventRestServlet',index=~\"$index\",instance=\"$instance\",code=~\"2..\"}[$bucket_size]))",
-          "hide": false,
-          "instant": false,
-          "legendFormat": "Local events being persisted",
-          "refId": "E",
-          "editorMode": "code"
+          "refId": "H"
        },
        {
          "datasource": {
@@ -411,9 +393,8 @@
          "expr": "sum(rate(synapse_storage_events_persisted_events_total{instance=\"$instance\"}[$bucket_size]))",
          "hide": false,
          "instant": false,
-          "legendFormat": "All events being persisted",
-          "refId": "I",
-          "editorMode": "code"
+          "legendFormat": "Events",
+          "refId": "E"
        }
      ],
      "thresholds": [
@@ -447,9 +428,7 @@
      "xaxis": {
        "mode": "time",
        "show": true,
-        "values": [],
-        "name": null,
-        "buckets": null
+        "values": []
      },
      "yaxes": [
        {
@@ -471,20 +450,7 @@
      ],
      "yaxis": {
        "align": false
-      },
-      "bars": false,
-      "dashes": false,
-      "description": "",
-      "fill": 0,
-      "fillGradient": 0,
-      "hiddenSeries": false,
-      "linewidth": 0,
-      "percentage": false,
-      "points": false,
-      "stack": false,
-      "steppedLine": false,
-      "timeFrom": null,
-      "timeShift": null
+      }
    },
    {
      "aliasColors": {},
@@ -4396,7 +4362,7 @@
              "exemplar": false,
              "expr": "(time() - max without (job, index, host) (avg_over_time(synapse_federation_last_received_pdu_time[10m]))) / 60",
              "instant": false,
-              "legendFormat": "{{origin_server_name}} ",
+              "legendFormat": "{{server_name}} ",
              "range": true,
              "refId": "A"
            }
@@ -4518,7 +4484,7 @@
              "exemplar": false,
              "expr": "(time() - max without (job, index, host) (avg_over_time(synapse_federation_last_sent_pdu_time[10m]))) / 60",
              "instant": false,
-              "legendFormat": "{{destination_server_name}}",
+              "legendFormat": "{{server_name}}",
              "range": true,
              "refId": "A"
            }
--- a/contrib/graph/graph.py
+++ b/contrib/graph/graph.py
@@ -45,10 +45,6 @@ def make_graph(pdus: List[dict], filename_prefix: str) -> None:
    colors = {"red", "green", "blue", "yellow", "purple"}

    for pdu in pdus:
-        # TODO: The "origin" field has since been removed from events generated
-        # by Synapse. We should consider removing it here as well but since this
-        # is part of `contrib/`, it is left for the community to revise and ensure things
-        # still work correctly.
        origins.add(pdu.get("origin"))

    color_map = {color: color for color in colors if color in origins}
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,147 +1,3 @@
-matrix-synapse-py3 (1.138.0~rc1) stable; urgency=medium
-
-  * New synapse release 1.138.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 02 Sep 2025 12:16:14 +0000
-
-matrix-synapse-py3 (1.137.0) stable; urgency=medium
-
-  * New Synapse release 1.137.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 26 Aug 2025 10:23:41 +0100
-
-matrix-synapse-py3 (1.137.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.137.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 19 Aug 2025 10:55:22 +0100
-
-matrix-synapse-py3 (1.136.0) stable; urgency=medium
-
-  * New Synapse release 1.136.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 12 Aug 2025 13:18:03 +0100
-
-matrix-synapse-py3 (1.136.0~rc2) stable; urgency=medium
-
-  * New Synapse release 1.136.0rc2.
-
- -- Synapse Packaging team <packages@matrix.org>  Mon, 11 Aug 2025 12:18:52 -0600
-
-matrix-synapse-py3 (1.136.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.136.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 05 Aug 2025 08:13:30 -0600
-
-matrix-synapse-py3 (1.135.2) stable; urgency=medium
-
-  * New Synapse release 1.135.2.
-
- -- Synapse Packaging team <packages@matrix.org>  Mon, 11 Aug 2025 11:52:01 -0600
-
-matrix-synapse-py3 (1.135.1) stable; urgency=medium
-
-  * New Synapse release 1.135.1.
-
- -- Synapse Packaging team <packages@matrix.org>  Mon, 11 Aug 2025 11:13:15 -0600
-
-matrix-synapse-py3 (1.135.0) stable; urgency=medium
-
-  * New Synapse release 1.135.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Fri, 01 Aug 2025 13:12:28 +0100
-
-matrix-synapse-py3 (1.135.0~rc2) stable; urgency=medium
-
-  * New Synapse release 1.135.0rc2.
-
- -- Synapse Packaging team <packages@matrix.org>  Wed, 30 Jul 2025 12:19:14 +0100
-
-matrix-synapse-py3 (1.135.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.135.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 22 Jul 2025 12:08:37 +0100
-
-matrix-synapse-py3 (1.134.0) stable; urgency=medium
-
-  * New Synapse release 1.134.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 15 Jul 2025 14:22:50 +0100
-
-matrix-synapse-py3 (1.134.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.134.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Wed, 09 Jul 2025 11:27:13 +0100
-
-matrix-synapse-py3 (1.133.0) stable; urgency=medium
-
-  * New synapse release 1.133.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 01 Jul 2025 13:13:24 +0000
-
-matrix-synapse-py3 (1.133.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.133.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 24 Jun 2025 11:57:47 +0100
-
-matrix-synapse-py3 (1.132.0) stable; urgency=medium
-
-  * New Synapse release 1.132.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 17 Jun 2025 13:16:20 +0100
-
-matrix-synapse-py3 (1.132.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.132.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 10 Jun 2025 11:15:18 +0100
-
-matrix-synapse-py3 (1.131.0) stable; urgency=medium
-
-  * New Synapse release 1.131.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 03 Jun 2025 14:36:55 +0100
-
-matrix-synapse-py3 (1.131.0~rc1) stable; urgency=medium
-
-  * New synapse release 1.131.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Wed, 28 May 2025 10:25:44 +0000
-
-matrix-synapse-py3 (1.130.0) stable; urgency=medium
-
-  * New Synapse release 1.130.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 20 May 2025 08:34:13 -0600
-
-matrix-synapse-py3 (1.130.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.130.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 13 May 2025 10:44:04 +0100
-
-matrix-synapse-py3 (1.129.0) stable; urgency=medium
-
-  * New Synapse release 1.129.0.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 06 May 2025 12:22:11 +0100
-
-matrix-synapse-py3 (1.129.0~rc2) stable; urgency=medium
-
-  * New synapse release 1.129.0rc2.
-
- -- Synapse Packaging team <packages@matrix.org>  Wed, 30 Apr 2025 13:13:16 +0000
-
-matrix-synapse-py3 (1.129.0~rc1) stable; urgency=medium
-
-  * New Synapse release 1.129.0rc1.
-
- -- Synapse Packaging team <packages@matrix.org>  Tue, 15 Apr 2025 10:47:43 -0600
-
 matrix-synapse-py3 (1.128.0) stable; urgency=medium

  * New Synapse release 1.128.0.
--- a/docker/Dockerfile-workers
+++ b/docker/Dockerfile-workers
@@ -3,37 +3,18 @@
 ARG SYNAPSE_VERSION=latest
 ARG FROM=matrixdotorg/synapse:$SYNAPSE_VERSION
 ARG DEBIAN_VERSION=bookworm
-ARG PYTHON_VERSION=3.12

-# first of all, we create a base image with dependencies which we can copy into the
+# first of all, we create a base image with an nginx which we can copy into the
 # target image. For repeated rebuilds, this is much faster than apt installing
 # each time.

-FROM ghcr.io/astral-sh/uv:python${PYTHON_VERSION}-${DEBIAN_VERSION} AS deps_base
-
-    # Tell apt to keep downloaded package files, as we're using cache mounts.
-    RUN rm -f /etc/apt/apt.conf.d/docker-clean; echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache
-
+FROM docker.io/library/debian:${DEBIAN_VERSION}-slim AS deps_base
    RUN \
       --mount=type=cache,target=/var/cache/apt,sharing=locked \
       --mount=type=cache,target=/var/lib/apt,sharing=locked \
      apt-get update -qq && \
      DEBIAN_FRONTEND=noninteractive apt-get install -yqq --no-install-recommends \
-          nginx-light
-
-    RUN \
-    # remove default page
-      rm /etc/nginx/sites-enabled/default && \
-    # have nginx log to stderr/out
-      ln -sf /dev/stdout /var/log/nginx/access.log && \
-      ln -sf /dev/stderr /var/log/nginx/error.log
-
-    # --link-mode=copy silences a warning as uv isn't able to do hardlinks between its cache
-    # (mounted as --mount=type=cache) and the target directory.
-    RUN --mount=type=cache,target=/root/.cache/uv \
-      uv pip install --link-mode=copy --prefix="/uv/usr/local" supervisor~=4.2
-
-    RUN mkdir -p /uv/etc/supervisor/conf.d
+          redis-server nginx-light

 # Similarly, a base to copy the redis server from.
 #
@@ -46,16 +27,31 @@ FROM docker.io/library/redis:7-${DEBIAN_VERSION} AS redis_base
 # now build the final image, based on the the regular Synapse docker image
 FROM $FROM

-    # Copy over dependencies
+    # Install supervisord with uv pip instead of apt, to avoid installing a second
+    # copy of python.
+    # --link-mode=copy silences a warning as uv isn't able to do hardlinks between its cache
+    # (mounted as --mount=type=cache) and the target directory.
+    RUN \
+         --mount=type=bind,from=ghcr.io/astral-sh/uv:0.6.8,source=/uv,target=/uv \
+         --mount=type=cache,target=/root/.cache/uv \
+        /uv pip install --link-mode=copy --prefix="/usr/local" supervisor~=4.2
+
+    RUN mkdir -p /etc/supervisor/conf.d
+
+    # Copy over redis and nginx
    COPY --from=redis_base /usr/local/bin/redis-server /usr/local/bin
-    COPY --from=deps_base /uv /
+
    COPY --from=deps_base /usr/sbin/nginx /usr/sbin
    COPY --from=deps_base /usr/share/nginx /usr/share/nginx
    COPY --from=deps_base /usr/lib/nginx /usr/lib/nginx
    COPY --from=deps_base /etc/nginx /etc/nginx
-    COPY --from=deps_base /var/log/nginx /var/log/nginx
-    # chown to allow non-root user to write to http-*-temp-path dirs
-    COPY --from=deps_base --chown=www-data:root /var/lib/nginx /var/lib/nginx
+    RUN rm /etc/nginx/sites-enabled/default
+    RUN mkdir /var/log/nginx /var/lib/nginx
+    RUN chown www-data /var/lib/nginx
+
+    # have nginx log to stderr/out
+    RUN ln -sf /dev/stdout /var/log/nginx/access.log
+    RUN ln -sf /dev/stderr /var/log/nginx/error.log

    # Copy Synapse worker, nginx and supervisord configuration template files
    COPY ./docker/conf-workers/* /conf/
@@ -74,4 +70,4 @@ FROM $FROM
    # Replace the healthcheck with one which checks *all* the workers. The script
    # is generated by configure_workers_and_start.py.
    HEALTHCHECK --start-period=5s --interval=15s --timeout=5s \
-        CMD ["/healthcheck.sh"]
+        CMD /bin/sh /healthcheck.sh
--- a/docker/complement/Dockerfile
+++ b/docker/complement/Dockerfile
@@ -58,4 +58,4 @@ ENTRYPOINT ["/start_for_complement.sh"]

 # Update the healthcheck to have a shorter check interval
 HEALTHCHECK --start-period=5s --interval=1s --timeout=1s \
-    CMD ["/healthcheck.sh"]
+    CMD /bin/sh /healthcheck.sh
--- a/docker/complement/conf/start_for_complement.sh
+++ b/docker/complement/conf/start_for_complement.sh
@@ -9,7 +9,7 @@ echo "  Args: $*"
 echo "  Env: SYNAPSE_COMPLEMENT_DATABASE=$SYNAPSE_COMPLEMENT_DATABASE SYNAPSE_COMPLEMENT_USE_WORKERS=$SYNAPSE_COMPLEMENT_USE_WORKERS SYNAPSE_COMPLEMENT_USE_ASYNCIO_REACTOR=$SYNAPSE_COMPLEMENT_USE_ASYNCIO_REACTOR"

 function log {
-    d=$(printf '%(%Y-%m-%d %H:%M:%S)T,%.3s\n' ${EPOCHREALTIME/./ })
+    d=$(date +"%Y-%m-%d %H:%M:%S,%3N")
    echo "$d $*"
 }

@@ -54,6 +54,7 @@ if [[ -n "$SYNAPSE_COMPLEMENT_USE_WORKERS" ]]; then
    export SYNAPSE_WORKER_TYPES="\
      event_persister:2, \
      background_worker, \
+      frontend_proxy, \
      event_creator, \
      user_dir, \
      media_repository, \
@@ -64,7 +65,6 @@ if [[ -n "$SYNAPSE_COMPLEMENT_USE_WORKERS" ]]; then
      client_reader, \
      appservice, \
      pusher, \
-      device_lists:2, \
      stream_writers=account_data+presence+receipts+to_device+typing"

  fi
@@ -103,11 +103,12 @@ fi
 # Note that both the key and certificate are in PEM format (not DER).

 # First generate a configuration file to set up a Subject Alternative Name.
-echo "\
+cat > /conf/server.tls.conf <<EOF
 .include /etc/ssl/openssl.cnf

 [SAN]
-subjectAltName=DNS:${SERVER_NAME}" > /conf/server.tls.conf
+subjectAltName=DNS:${SERVER_NAME}
+EOF

 # Generate an RSA key
 openssl genrsa -out /conf/server.tls.key 2048
@@ -122,8 +123,8 @@ openssl x509 -req -in /conf/server.tls.csr \
  -out /conf/server.tls.crt -extfile /conf/server.tls.conf -extensions SAN

 # Assert that we have a Subject Alternative Name in the certificate.
-# (the test will exit with 1 here if there isn't a SAN in the certificate.)
-[[ $(openssl x509 -in /conf/server.tls.crt -noout -text) == *DNS:* ]]
+# (grep will exit with 1 here if there isn't a SAN in the certificate.)
+openssl x509 -in /conf/server.tls.crt -noout -text | grep DNS:

 export SYNAPSE_TLS_CERT=/conf/server.tls.crt
 export SYNAPSE_TLS_KEY=/conf/server.tls.key
--- a/docker/complement/conf/workers-shared-extra.yaml.j2
+++ b/docker/complement/conf/workers-shared-extra.yaml.j2
@@ -98,10 +98,6 @@ rc_delayed_event_mgmt:
  per_second: 9999
  burst_count: 9999

-rc_room_creation:
-  per_second: 9999
-  burst_count: 9999
-
 federation_rr_transactions_per_room_per_second: 9999

 allow_device_name_lookup_over_federation: true
@@ -131,8 +127,6 @@ experimental_features:
  msc3983_appservice_otk_claims: true
  # Proxy key queries to exclusive ASes
  msc3984_appservice_key_query: true
-  # Invite filtering
-  msc4155_enabled: true

 server_notices:
  system_mxid_localpart: _server
--- a/docker/conf/log.config
+++ b/docker/conf/log.config
@@ -77,13 +77,6 @@ loggers:
    #}
    synapse.visibility.filtered_event_debug:
        level: DEBUG
-
-    {#
-      If Synapse is under test, we don't care about seeing the "Applying schema" log
-      lines at the INFO level every time we run the tests (it's 100 lines of bulk)
-    #}
-    synapse.storage.prepare_database:
-      level: WARN
    {% endif %}

 root:
--- a/docker/configure_workers_and_start.py
+++ b/docker/configure_workers_and_start.py
@@ -1,4 +1,4 @@
-#!/usr/local/bin/python
+#!/usr/bin/env python
 #
 # This file is licensed under the Affero General Public License (AGPL) version 3.
 #
@@ -178,9 +178,6 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
            "^/_matrix/client/(api/v1|r0|v3|unstable)/login$",
            "^/_matrix/client/(api/v1|r0|v3|unstable)/account/3pid$",
            "^/_matrix/client/(api/v1|r0|v3|unstable)/account/whoami$",
-            "^/_matrix/client/(api/v1|r0|v3|unstable)/account/deactivate$",
-            "^/_matrix/client/(api/v1|r0|v3|unstable)/devices(/|$)",
-            "^/_matrix/client/(r0|v3)/delete_devices$",
            "^/_matrix/client/versions$",
            "^/_matrix/client/(api/v1|r0|v3|unstable)/voip/turnServer$",
            "^/_matrix/client/(r0|v3|unstable)/register$",
@@ -197,9 +194,6 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
            "^/_matrix/client/(api/v1|r0|v3|unstable)/directory/room/.*$",
            "^/_matrix/client/(r0|v3|unstable)/capabilities$",
            "^/_matrix/client/(r0|v3|unstable)/notifications$",
-            "^/_matrix/client/(api/v1|r0|v3|unstable)/keys/upload",
-            "^/_matrix/client/(api/v1|r0|v3|unstable)/keys/device_signing/upload$",
-            "^/_matrix/client/(api/v1|r0|v3|unstable)/keys/signatures/upload$",
        ],
        "shared_extra_conf": {},
        "worker_extra_conf": "",
@@ -208,7 +202,6 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        "app": "synapse.app.generic_worker",
        "listener_resources": ["federation"],
        "endpoint_patterns": [
-            "^/_matrix/federation/v1/version$",
            "^/_matrix/federation/(v1|v2)/event/",
            "^/_matrix/federation/(v1|v2)/state/",
            "^/_matrix/federation/(v1|v2)/state_ids/",
@@ -271,6 +264,13 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        "shared_extra_conf": {},
        "worker_extra_conf": "",
    },
+    "frontend_proxy": {
+        "app": "synapse.app.generic_worker",
+        "listener_resources": ["client", "replication"],
+        "endpoint_patterns": ["^/_matrix/client/(api/v1|r0|v3|unstable)/keys/upload"],
+        "shared_extra_conf": {},
+        "worker_extra_conf": "",
+    },
    "account_data": {
        "app": "synapse.app.generic_worker",
        "listener_resources": ["client", "replication"],
@@ -305,13 +305,6 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        "shared_extra_conf": {},
        "worker_extra_conf": "",
    },
-    "device_lists": {
-        "app": "synapse.app.generic_worker",
-        "listener_resources": ["client", "replication"],
-        "endpoint_patterns": [],
-        "shared_extra_conf": {},
-        "worker_extra_conf": "",
-    },
    "typing": {
        "app": "synapse.app.generic_worker",
        "listener_resources": ["client", "replication"],
@@ -328,15 +321,6 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        "shared_extra_conf": {},
        "worker_extra_conf": "",
    },
-    "thread_subscriptions": {
-        "app": "synapse.app.generic_worker",
-        "listener_resources": ["client", "replication"],
-        "endpoint_patterns": [
-            "^/_matrix/client/unstable/io.element.msc4306/.*",
-        ],
-        "shared_extra_conf": {},
-        "worker_extra_conf": "",
-    },
 }

 # Templates for sections that may be inserted multiple times in config files
@@ -367,11 +351,6 @@ def error(txt: str) -> NoReturn:


 def flush_buffers() -> None:
-    """
-    Python's `print()` buffers output by default, typically waiting until ~8KB
-    accumulates. This method can be used to flush the buffers so we can see the output
-    of any print statements so far.
-    """
    sys.stdout.flush()
    sys.stderr.flush()

@@ -397,11 +376,9 @@ def convert(src: str, dst: str, **template_vars: object) -> None:
    #
    # We use append mode in case the files have already been written to by something else
    # (for instance, as part of the instructions in a dockerfile).
-    exists = os.path.isfile(dst)
    with open(dst, "a") as outfile:
        # In case the existing file doesn't end with a newline
-        if exists:
-            outfile.write("\n")
+        outfile.write("\n")

        outfile.write(rendered)

@@ -427,18 +404,16 @@ def add_worker_roles_to_shared_config(
    # streams
    instance_map = shared_config.setdefault("instance_map", {})

-    # This is a list of the stream_writers.
-    stream_writers = {
+    # This is a list of the stream_writers that there can be only one of. Events can be
+    # sharded, and therefore doesn't belong here.
+    singular_stream_writers = [
        "account_data",
-        "events",
-        "device_lists",
        "presence",
        "receipts",
        "to_device",
        "typing",
        "push_rules",
-        "thread_subscriptions",
-    }
+    ]

    # Worker-type specific sharding config. Now a single worker can fulfill multiple
    # roles, check each.
@@ -448,11 +423,28 @@ def add_worker_roles_to_shared_config(
    if "federation_sender" in worker_types_set:
        shared_config.setdefault("federation_sender_instances", []).append(worker_name)

+    if "event_persister" in worker_types_set:
+        # Event persisters write to the events stream, so we need to update
+        # the list of event stream writers
+        shared_config.setdefault("stream_writers", {}).setdefault("events", []).append(
+            worker_name
+        )
+
+        # Map of stream writer instance names to host/ports combos
+        if os.environ.get("SYNAPSE_USE_UNIX_SOCKET", False):
+            instance_map[worker_name] = {
+                "path": f"/run/worker.{worker_port}",
+            }
+        else:
+            instance_map[worker_name] = {
+                "host": "localhost",
+                "port": worker_port,
+            }
    # Update the list of stream writers. It's convenient that the name of the worker
    # type is the same as the stream to write. Iterate over the whole list in case there
    # is more than one.
    for worker in worker_types_set:
-        if worker in stream_writers:
+        if worker in singular_stream_writers:
            shared_config.setdefault("stream_writers", {}).setdefault(
                worker, []
            ).append(worker_name)
@@ -612,7 +604,7 @@ def generate_base_homeserver_config() -> None:
    # start.py already does this for us, so just call that.
    # note that this script is copied in in the official, monolith dockerfile
    os.environ["SYNAPSE_HTTP_PORT"] = str(MAIN_PROCESS_HTTP_LISTENER_PORT)
-    subprocess.run([sys.executable, "/start.py", "migrate_config"], check=True)
+    subprocess.run(["/usr/local/bin/python", "/start.py", "migrate_config"], check=True)


 def parse_worker_types(
@@ -876,13 +868,6 @@ def generate_worker_files(
        else:
            healthcheck_urls.append("http://localhost:%d/health" % (worker_port,))

-        # Special case for event_persister: those are just workers that write to
-        # the `events` stream. For other workers, the worker name is the same
-        # name of the stream they write to, but for some reason it is not the
-        # case for event_persister.
-        if "event_persister" in worker_types_set:
-            worker_types_set.add("events")
-
        # Update the shared config with sharding-related options if necessary
        add_worker_roles_to_shared_config(
            shared_config, worker_types_set, worker_name, worker_port
@@ -1013,7 +998,6 @@ def generate_worker_files(
        "/healthcheck.sh",
        healthcheck_urls=healthcheck_urls,
    )
-    os.chmod("/healthcheck.sh", 0o755)

    # Ensure the logging directory exists
    log_dir = data_dir + "/logs"
--- a/docker/start.py
+++ b/docker/start.py
@@ -22,11 +22,6 @@ def error(txt: str) -> NoReturn:


 def flush_buffers() -> None:
-    """
-    Python's `print()` buffers output by default, typically waiting until ~8KB
-    accumulates. This method can be used to flush the buffers so we can see the output
-    of any print statements so far.
-    """
    sys.stdout.flush()
    sys.stderr.flush()

--- a/docs/README.md
+++ b/docs/README.md
@@ -63,18 +63,6 @@ mdbook serve

 The URL at which the docs can be viewed at will be logged.

-## Synapse configuration documentation
-
-The [Configuration
-Manual](https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html)
-page is generated from a YAML file,
-[schema/synapse-config.schema.yaml](../schema/synapse-config.schema.yaml). To
-add new options or modify existing ones, first edit that file, then run
-[scripts-dev/gen_config_documentation.py](../scripts-dev/gen_config_documentation.py)
-to generate an updated Configuration Manual markdown file.
-
-Build the book as described above to preview it in a web browser.
-
 ## Configuration and theming

 The look and behaviour of the website is configured by the [book.toml](../book.toml) file
--- a/docs/SUMMARY.md
+++ b/docs/SUMMARY.md
@@ -49,8 +49,6 @@
        - [Background update controller callbacks](modules/background_update_controller_callbacks.md)
        - [Account data callbacks](modules/account_data_callbacks.md)
        - [Add extra fields to client events unsigned section callbacks](modules/add_extra_fields_to_client_events_unsigned.md)
-        - [Media repository callbacks](modules/media_repository_callbacks.md)
-        - [Ratelimit callbacks](modules/ratelimit_callbacks.md)
        - [Porting a legacy module to the new interface](modules/porting_legacy_module.md)
    - [Workers](workers.md)
      - [Using `synctl` with Workers](synctl_workers.md)
@@ -68,13 +66,11 @@
      - [Registration Tokens](usage/administration/admin_api/registration_tokens.md)
      - [Manipulate Room Membership](admin_api/room_membership.md)
      - [Rooms](admin_api/rooms.md)
-      - [Scheduled tasks](admin_api/scheduled_tasks.md)
      - [Server Notices](admin_api/server_notices.md)
      - [Statistics](admin_api/statistics.md)
      - [Users](admin_api/user_admin_api.md)
      - [Server Version](admin_api/version_api.md)
      - [Federation](usage/administration/admin_api/federation.md)
-      - [Client-Server API Extensions](admin_api/client_server_api_extensions.md)
    - [Manhole](manhole.md)
    - [Monitoring](metrics-howto.md)
      - [Reporting Homeserver Usage Statistics](usage/administration/monitoring/reporting_homeserver_usage_statistics.md)
--- a/docs/admin_api/client_server_api_extensions.md
+++ b/docs/admin_api/client_server_api_extensions.md
@@ -1,67 +0,0 @@
-# Client-Server API Extensions
-
-Server administrators can set special account data to change how the Client-Server API behaves for
-their clients. Setting the account data, or having it already set, as a non-admin has no effect.
-
-All configuration options can be set through the `io.element.synapse.admin_client_config` global 
-account data on the admin's user account. 
-
-Example:
-```
-PUT /_matrix/client/v3/user/{adminUserId}/account_data/io.element.synapse.admin_client_config
-{
-    "return_soft_failed_events": true
-}
-```
-
-## See soft failed events
-
-Learn more about soft failure from [the spec](https://spec.matrix.org/v1.14/server-server-api/#soft-failure).
-
-To receive soft failed events in APIs like `/sync` and `/messages`, set `return_soft_failed_events`
-to `true` in the admin client config. When `false`, the normal behaviour of these endpoints is to
-exclude soft failed events.
-
-**Note**: If the policy server flagged the event as spam and that caused soft failure, that will be indicated
-in the event's `unsigned` content like so:
-
-```json
-{
-  "type": "m.room.message",
-  "other": "event_fields_go_here",
-  "unsigned": {
-    "io.element.synapse.soft_failed": true,
-    "io.element.synapse.policy_server_spammy": true
-  }
-}
-```
-
-Default: `false`
-
-## See events marked spammy by policy servers
-
-Learn more about policy servers from [MSC4284](https://github.com/matrix-org/matrix-spec-proposals/pull/4284).
-
-Similar to `return_soft_failed_events`, clients logged in with admin accounts can see events which were
-flagged by the policy server as spammy (and thus soft failed) by setting `return_policy_server_spammy_events`
-to `true`.
-
-`return_policy_server_spammy_events` may be `true` while `return_soft_failed_events` is `false` to only see
-policy server-flagged events. When `return_soft_failed_events` is `true` however, `return_policy_server_spammy_events`
-is always `true`.
-
-Events which were flagged by the policy will be flagged as `io.element.synapse.policy_server_spammy` in the
-event's `unsigned` content, like so:
-
-```json
-{
-  "type": "m.room.message",
-  "other": "event_fields_go_here",
-  "unsigned": {
-    "io.element.synapse.soft_failed": true,
-    "io.element.synapse.policy_server_spammy": true
-  }
-}
-```
-
-Default: `true` if `return_soft_failed_events` is `true`, otherwise `false`
--- a/docs/admin_api/event_reports.md
+++ b/docs/admin_api/event_reports.md
@@ -117,6 +117,7 @@ It returns a JSON body like the following:
        "hashes": {
            "sha256": "xK1//xnmvHJIOvbgXlkI8eEqdvoMmihVDJ9J4SNlsAw"
        },
+        "origin": "matrix.org",
        "origin_server_ts": 1592291711430,
        "prev_events": [
            "$YK4arsKKcc0LRoe700pS8DSjOvUT4NDv0HfInlMFw2M"
--- a/docs/admin_api/rooms.md
+++ b/docs/admin_api/rooms.md
@@ -794,7 +794,6 @@ A response body like the following is returned:
    "results": [
        {
            "delete_id": "delete_id1",
-            "room_id": "!roomid:example.com",
            "status": "failed",
            "error": "error message",
            "shutdown_room": {
@@ -805,8 +804,7 @@ A response body like the following is returned:
            }
        }, {
            "delete_id": "delete_id2",
-            "room_id": "!roomid:example.com",
-            "status": "active",
+            "status": "purging",
            "shutdown_room": {
                "kicked_users": [
                    "@foobar:example.com"
@@ -843,9 +841,7 @@ A response body like the following is returned:

 ```json
 {
-    "status": "active",
-    "delete_id": "bHkCNQpHqOaFhPtK",
-    "room_id": "!roomid:example.com",
+    "status": "purging",
    "shutdown_room": {
        "kicked_users": [
            "@foobar:example.com"
@@ -873,11 +869,10 @@ The following fields are returned in the JSON response body:
 - `results` - An array of objects, each containing information about one task.
  This field is omitted from the result when you query by `delete_id`.
  Task objects contain the following fields:
-  - `delete_id` - The ID for this purge
-  - `room_id` - The ID of the room being deleted
+  - `delete_id` - The ID for this purge if you query by `room_id`.
  - `status` - The status will be one of:
-    - `scheduled` - The deletion is waiting to be started
-    - `active` - The process is purging the room and event data from database.
+    - `shutting_down` - The process is removing users from the room.
+    - `purging` - The process is purging the room and event data from database.
    - `complete` - The process has completed successfully.
    - `failed` - The process is aborted, an error has occurred.
  - `error` - A string that shows an error message if `status` is `failed`.
--- a/docs/admin_api/scheduled_tasks.md
+++ b/docs/admin_api/scheduled_tasks.md
@@ -1,54 +0,0 @@
-# Show scheduled tasks
-
-This API returns information about scheduled tasks.
-
-To use it, you will need to authenticate by providing an `access_token`
-for a server admin: see [Admin API](../usage/administration/admin_api/).
-
-The api is:
-```
-GET /_synapse/admin/v1/scheduled_tasks
-```
-
-It returns a JSON body like the following:
-
-```json
-{
-    "scheduled_tasks": [
-        {
-            "id": "GSA124oegf1",
-            "action": "shutdown_room",
-            "status": "complete",
-            "timestamp_ms": 23423523,
-            "resource_id": "!roomid",
-            "result": "some result",
-            "error": null
-        }
-      ]
-}
-```
-
-**Query parameters:**
-
-* `action_name`: string - Is optional. Returns only the scheduled tasks with the given action name.
-* `resource_id`: string - Is optional. Returns only the scheduled tasks with the given resource id.
-* `status`: string - Is optional. Returns only the scheduled tasks matching the given status, one of
-    - "scheduled" - Task is scheduled but not active
-    - "active" - Task is active and probably running, and if not will be run on next scheduler loop run
-    - "complete" - Task has completed successfully
-    - "failed" - Task is over and either returned a failed status, or had an exception
-
-* `max_timestamp`: int - Is optional. Returns only the scheduled tasks with a timestamp inferior to the specified one.
-
-**Response**
-
-The following fields are returned in the JSON response body along with a `200` HTTP status code:
-
-* `id`: string - ID of scheduled task.
-* `action`: string - The name of the scheduled task's action.
-* `status`: string - The status of the scheduled task.
-* `timestamp_ms`: integer - The timestamp (in milliseconds since the unix epoch) of the given task - If the status is "scheduled" then this represents when it should be launched.
-  Otherwise it represents the last time this task got a change of state.
-* `resource_id`: Optional string - The resource id of the scheduled task, if it possesses one
-* `result`: Optional Json - Any result of the scheduled task, if given
-* `error`: Optional string - If the task has the status "failed", the error associated with this failure
--- a/docs/admin_api/user_admin_api.md
+++ b/docs/admin_api/user_admin_api.md
@@ -163,8 +163,7 @@ Body parameters:
 - `locked` - **bool**, optional. If unspecified, locked state will be left unchanged.
 - `user_type` - **string** or null, optional. If not provided, the user type will be
  not be changed. If `null` is given, the user type will be cleared.
-  Other allowed options are: `bot` and `support` and any extra values defined in the homserver
-  [configuration](../usage/configuration/config_documentation.md#user_types).
+  Other allowed options are: `bot` and `support`.

 ## List Accounts
 ### List Accounts (V2)
@@ -955,8 +954,7 @@ A response body like the following is returned:
      "last_seen_ip": "1.2.3.4",
      "last_seen_user_agent": "Mozilla/5.0 (X11; Linux x86_64; rv:103.0) Gecko/20100101 Firefox/103.0",
      "last_seen_ts": 1474491775024,
-      "user_id": "<user_id>",
-      "dehydrated": false
+      "user_id": "<user_id>"
    },
    {
      "device_id": "AUIECTSRND",
@@ -964,8 +962,7 @@ A response body like the following is returned:
      "last_seen_ip": "1.2.3.5",
      "last_seen_user_agent": "Mozilla/5.0 (X11; Linux x86_64; rv:103.0) Gecko/20100101 Firefox/103.0",
      "last_seen_ts": 1474491775025,
-      "user_id": "<user_id>",
-      "dehydrated": false
+      "user_id": "<user_id>"
    }
  ],
  "total": 2
@@ -995,7 +992,6 @@ The following fields are returned in the JSON response body:
  - `last_seen_ts` - The timestamp (in milliseconds since the unix epoch) when this
    devices was last seen. (May be a few minutes out of date, for efficiency reasons).
  - `user_id` - Owner of  device.
-  - `dehydrated` - Whether the device is a dehydrated device.

 - `total` - Total number of user's devices.

@@ -1227,7 +1223,7 @@ See also the

 ## Controlling whether a user is shadow-banned

-Shadow-banning is a useful tool for moderating malicious or egregiously abusive users. 
+Shadow-banning is a useful tool for moderating malicious or egregiously abusive users.
 A shadow-banned users receives successful responses to their client-server API requests,
 but the events are not propagated into rooms. This can be an effective tool as it
 (hopefully) takes longer for the user to realise they are being moderated before
@@ -1464,11 +1460,8 @@ _Added in Synapse 1.72.0._

 ## Redact all the events of a user

-This endpoint allows an admin to redact the events of a given user. There are no restrictions on
-redactions for a local user. By default, we puppet the user who sent the message to redact it themselves.
-Redactions for non-local users are issued using the admin user, and will fail in rooms where the
-admin user is not admin/does not have the specified power level to issue redactions. An option
-is provided to override the default and allow the admin to issue the redactions in all cases.  
+This endpoint allows an admin to redact the events of a given user. There are no restrictions on redactions for a 
+local user. By default, we puppet the user who sent the message to redact it themselves. Redactions for non-local users are issued using the admin user, and will fail in rooms where the admin user is not admin/does not have the specified power level to issue redactions. 

 The API is 
 ```
@@ -1478,7 +1471,7 @@ POST /_synapse/admin/v1/user/$user_id/redact
  "rooms": ["!roomid1", "!roomid2"]
 }
 ```
-If an empty list is provided as the key for `rooms`, all events in all the rooms the user is member of will be redacted,
+If an empty list is provided as the key for `rooms`, all events in all the rooms the user is member of will be redacted, 
 otherwise all the events in the rooms provided in the request will be redacted. 

 The API starts redaction process running, and returns immediately with a JSON body with
@@ -1504,10 +1497,7 @@ The following JSON body parameter must be provided:
 The following JSON body parameters are optional:

 - `reason` - Reason the redaction is being requested, ie "spam", "abuse", etc. This will be included in each redaction event, and be visible to users.
- `limit` - a limit on the number of the user's events to search for ones that can be redacted (events are redacted newest to oldest) in each room, defaults to 1000 if not provided.
- `use_admin` - If set to `true`, the admin user is used to issue the redactions, rather than puppeting the user. Useful
- when the admin is also the moderator of the rooms that require redactions. Note that the redactions will fail in rooms
- where the admin does not have the sufficient power level to issue the redactions.  
+- `limit` - a limit on the number of the user's events to search for ones that can be redacted (events are redacted newest to oldest) in each room, defaults to 1000 if not provided

 _Added in Synapse 1.116.0._

--- a/docs/development/contributing_guide.md
+++ b/docs/development/contributing_guide.md
@@ -29,6 +29,8 @@ easiest way of installing the latest version is to use [rustup](https://rustup.r

 Synapse can connect to PostgreSQL via the [psycopg2](https://pypi.org/project/psycopg2/) Python library. Building this library from source requires access to PostgreSQL's C header files. On Debian or Ubuntu Linux, these can be installed with `sudo apt install libpq-dev`.

+Synapse has an optional, improved user search with better Unicode support. For that you need the development package of `libicu`. On Debian or Ubuntu Linux, this can be installed with `sudo apt install libicu-dev`.
+
 The source code of Synapse is hosted on GitHub. You will also need [a recent version of git](https://github.com/git-guides/install-git).

 For some tests, you will need [a recent version of Docker](https://docs.docker.com/get-docker/).
--- a/docs/development/dependencies.md
+++ b/docs/development/dependencies.md
@@ -164,7 +164,10 @@ $ poetry cache clear --all .
 # including the wheel artifacts which is not covered by the above command
 # (see https://github.com/python-poetry/poetry/issues/10304)
 #
-# This is necessary in order to rebuild or fetch new wheels.
+# This is necessary in order to rebuild or fetch new wheels. For example, if you update
+# the `icu` library in on your system, you will need to rebuild the PyICU Python package
+# in order to incorporate the correct dynamically linked library locations otherwise you
+# will run into errors like: `ImportError: libicui18n.so.75: cannot open shared object file: No such file or directory`
 $ rm -rf $(poetry config cache-dir)
 ```

--- a/docs/log_contexts.md
+++ b/docs/log_contexts.md
@@ -1,12 +1,12 @@
 # Log Contexts

 To help track the processing of individual requests, synapse uses a
-`LoggingContext` to track which request it is handling at any given
-moment. This is done via a `ContextVar` variable; a `logging.Filter` is
-then used to fish the information back out of the `ContextVar` variable
+'`log context`' to track which request it is handling at any given
+moment. This is done via a thread-local variable; a `logging.Filter` is
+then used to fish the information back out of the thread-local variable
 and add it to each log record.

-Log contexts are also used for CPU and database accounting, so that we
+Logcontexts are also used for CPU and database accounting, so that we
 can track which requests were responsible for high CPU use or database
 activity.

@@ -14,11 +14,18 @@ The `synapse.logging.context` module provides facilities for managing
 the current log context (as well as providing the `LoggingContextFilter`
 class).

-In this document, "awaitable" refers to any object which can be `await`ed. In the
-context of Synapse, that normally means either a coroutine or a Twisted
+Asynchronous functions make the whole thing complicated, so this document describes
+how it all works, and how to write code which follows the rules.
+
+In this document, "awaitable" refers to any object which can be `await`ed. In the context of
+Synapse, that normally means either a coroutine or a Twisted 
 [`Deferred`](https://twistedmatrix.com/documents/current/api/twisted.internet.defer.Deferred.html).

-## Basic usage
+## Logcontexts without asynchronous code
+
+In the absence of any asynchronous voodoo, things are simple enough. As with
+any code of this nature, the rule is that our function should leave
+things as it found them:

 ```python
 from synapse.logging import context         # omitted from future snippets
@@ -38,7 +45,7 @@ def do_request_handling():
    logger.debug("phew")  # this will be logged against request_id
 ```

-`LoggingContext` implements the context management methods, so the above
+LoggingContext implements the context management methods, so the above
 can be written much more succinctly as:

 ```python
@@ -52,76 +59,197 @@ def do_request_handling():
    logger.debug("phew")
 ```

-### The `sentinel` context
+## Using logcontexts with awaitables

-The default context is `context.SENTINEL_CONTEXT`, which is a sentinel value to
-represent the root context. This is what is used when there is no other context set.
+Awaitables break the linear flow of code so that there is no longer a single entry point
+where we should set the logcontext and a single exit point where we should remove it.

-No CPU/database usage metrics are recorded against the `sentinel` context.
-
-Ideally, nothing from the Synapse homeserver would be logged against the `sentinel`
-context as we want to know where the logs came from. In practice, this is not always the
-case yet especially outside of request handling.
-
-Previously, the `sentinel` context played a bigger role when we had to carefully deal
-with thread-local storage; as we had to make sure to not leak another context to another
-task after we gave up control to the reactor so we set the 
-
-
-
-### `PreserveLoggingContext`
-
-In a similar vein of no longer as relevant, `PreserveLoggingContext` is another context
-manager helper and a little bit of syntactic sugar to set the current log context
-(without finishing it) and restore the previous context on exit.
+Consider the example above, where `do_request_handling` needs to do some
+blocking operation, and returns an awaitable:

 ```python
-import logging
-from synapse.logging.context import LoggingContext
-
-logger = logging.getLogger(__name__)
-
-def main() -> None:
-    with context.LoggingContext("main"):
-        task_context = context.LoggingContext("task")
-
-        with task_context:
-            logger.debug("foo")
-
-        # Bad: will throw an error because `task_context` is already finished
-        with task_context:
-            logger.debug("bar")
-
+async def handle_request(request_id):
+    with context.LoggingContext() as request_context:
+        request_context.request = request_id
+        await do_request_handling()
        logger.debug("finished")
 ```

-This can be fixed by using `PreserveLoggingContext`:
+In the above flow:
+
+-   The logcontext is set
+-   `do_request_handling` is called, and returns an awaitable
+-   `handle_request` awaits the awaitable
+-   Execution of `handle_request` is suspended
+
+So we have stopped processing the request (and will probably go on to
+start processing the next), without clearing the logcontext.
+
+To circumvent this problem, synapse code assumes that, wherever you have
+an awaitable, you will want to `await` it. To that end, wherever
+functions return awaitables, we adopt the following conventions:
+
+**Rules for functions returning awaitables:**
+
+> -   If the awaitable is already complete, the function returns with the
+>     same logcontext it started with.
+> -   If the awaitable is incomplete, the function clears the logcontext
+>     before returning; when the awaitable completes, it restores the
+>     logcontext before running any callbacks.
+
+That sounds complicated, but actually it means a lot of code (including
+the example above) "just works". There are two cases:
+
+-   If `do_request_handling` returns a completed awaitable, then the
+    logcontext will still be in place. In this case, execution will
+    continue immediately after the `await`; the "finished" line will
+    be logged against the right context, and the `with` block restores
+    the original context before we return to the caller.
+-   If the returned awaitable is incomplete, `do_request_handling` clears
+    the logcontext before returning. The logcontext is therefore clear
+    when `handle_request` `await`s the awaitable.
+
+    Once `do_request_handling`'s awaitable completes, it will reinstate
+    the logcontext, before running the second half of `handle_request`,
+    so again the "finished" line will be logged against the right context,
+    and the `with` block restores the original context.
+
+As an aside, it's worth noting that `handle_request` follows our rules
+- though that only matters if the caller has its own logcontext which it
+cares about.
+
+The following sections describe pitfalls and helpful patterns when
+implementing these rules.
+
+Always await your awaitables
+----------------------------
+
+Whenever you get an awaitable back from a function, you should `await` on
+it as soon as possible. Do not pass go; do not do any logging; do not
+call any other functions.

 ```python
-import logging
-from synapse.logging.context import LoggingContext
+async def fun():
+    logger.debug("starting")
+    await do_some_stuff()       # just like this

-logger = logging.getLogger(__name__)
+    coro = more_stuff()
+    result = await coro         # also fine, of course

-def main() -> None:
-    with context.LoggingContext("main"):
-        task_context = context.LoggingContext("task")
-
-        with PreserveLoggingContext(task_context):
-            logger.debug("foo")
-        with PreserveLoggingContext(task_context):
-            logger.debug("bar")
-
-        logger.debug("finished") # this will be logged against main
+    return result
 ```

-Or you could equivalently just manage the log context manually via
-`set_current_context`.
+Provided this pattern is followed all the way back up to the callchain
+to where the logcontext was set, this will make things work out ok:
+provided `do_some_stuff` and `more_stuff` follow the rules above, then
+so will `fun`.

+It's all too easy to forget to `await`: for instance if we forgot that
+`do_some_stuff` returned an awaitable, we might plough on regardless. This
+leads to a mess; it will probably work itself out eventually, but not
+before a load of stuff has been logged against the wrong context.
+(Normally, other things will break, more obviously, if you forget to
+`await`, so this tends not to be a major problem in practice.)
+
+Of course sometimes you need to do something a bit fancier with your
+awaitable - not all code follows the linear A-then-B-then-C pattern.
+Notes on implementing more complex patterns are in later sections.
+
+## Where you create a new awaitable, make it follow the rules
+
+Most of the time, an awaitable comes from another synapse function.
+Sometimes, though, we need to make up a new awaitable, or we get an awaitable
+back from external code. We need to make it follow our rules.
+
+The easy way to do it is by using `context.make_deferred_yieldable`. Suppose we want to implement
+`sleep`, which returns a deferred which will run its callbacks after a
+given number of seconds. That might look like:
+
+```python
+# not a logcontext-rules-compliant function
+def get_sleep_deferred(seconds):
+    d = defer.Deferred()
+    reactor.callLater(seconds, d.callback, None)
+    return d
+```
+
+That doesn't follow the rules, but we can fix it by calling it through
+`context.make_deferred_yieldable`:
+
+```python
+async def sleep(seconds):
+    return await context.make_deferred_yieldable(get_sleep_deferred(seconds))
+```

 ## Fire-and-forget

-To drive an awaitable in the background, you can use `context.run_in_background`:
+Sometimes you want to fire off a chain of execution, but not wait for
+its result. That might look a bit like this:
+
+```python
+async def do_request_handling():
+    await foreground_operation()
+
+    # *don't* do this
+    background_operation()
+
+    logger.debug("Request handling complete")
+
+async def background_operation():
+    await first_background_step()
+    logger.debug("Completed first step")
+    await second_background_step()
+    logger.debug("Completed second step")
+```
+
+The above code does a couple of steps in the background after
+`do_request_handling` has finished. The log lines are still logged
+against the `request_context` logcontext, which may or may not be
+desirable. There are two big problems with the above, however. The first
+problem is that, if `background_operation` returns an incomplete
+awaitable, it will expect its caller to `await` immediately, so will have
+cleared the logcontext. In this example, that means that 'Request
+handling complete' will be logged without any context.
+
+The second problem, which is potentially even worse, is that when the
+awaitable returned by `background_operation` completes, it will restore
+the original logcontext. There is nothing waiting on that awaitable, so
+the logcontext will leak into the reactor and possibly get attached to
+some arbitrary future operation.
+
+There are two potential solutions to this.
+
+One option is to surround the call to `background_operation` with a
+`PreserveLoggingContext` call. That will reset the logcontext before
+starting `background_operation` (so the context restored when the
+deferred completes will be the empty logcontext), and will restore the
+current logcontext before continuing the foreground process:
+
+```python
+async def do_request_handling():
+    await foreground_operation()
+
+    # start background_operation off in the empty logcontext, to
+    # avoid leaking the current context into the reactor.
+    with PreserveLoggingContext():
+        background_operation()
+
+    # this will now be logged against the request context
+    logger.debug("Request handling complete")
+```
+
+Obviously that option means that the operations done in
+`background_operation` would be not be logged against a logcontext
+(though that might be fixed by setting a different logcontext via a
+`with LoggingContext(...)` in `background_operation`).
+
+The second option is to use `context.run_in_background`, which wraps a
+function so that it doesn't reset the logcontext even when it returns
+an incomplete awaitable, and adds a callback to the returned awaitable to
+reset the logcontext. In other words, it turns a function that follows
+the Synapse rules about logcontexts and awaitables into one which behaves
+more like an external function --- the opposite operation to that
+described in the previous section. It can be used like this:

 ```python
 async def do_request_handling():
@@ -133,13 +261,104 @@ async def do_request_handling():
    logger.debug("Request handling complete")
 ```

+## Passing synapse deferreds into third-party functions
+
+A typical example of this is where we want to collect together two or
+more awaitables via `defer.gatherResults`:
+
+```python
+a1 = operation1()
+a2 = operation2()
+a3 = defer.gatherResults([a1, a2])
+```
+
+This is really a variation of the fire-and-forget problem above, in that
+we are firing off `a1` and `a2` without awaiting on them. The difference
+is that we now have third-party code attached to their callbacks. Anyway
+either technique given in the [Fire-and-forget](#fire-and-forget)
+section will work.
+
+Of course, the new awaitable returned by `gather` needs to be
+wrapped in order to make it follow the logcontext rules before we can
+yield it, as described in [Where you create a new awaitable, make it
+follow the
+rules](#where-you-create-a-new-awaitable-make-it-follow-the-rules).
+
+So, option one: reset the logcontext before starting the operations to
+be gathered:
+
+```python
+async def do_request_handling():
+    with PreserveLoggingContext():
+        a1 = operation1()
+        a2 = operation2()
+        result = await defer.gatherResults([a1, a2])
+```
+
+In this case particularly, though, option two, of using
+`context.run_in_background` almost certainly makes more sense, so that
+`operation1` and `operation2` are both logged against the original
+logcontext. This looks like:
+
 ```python
 async def do_request_handling():
    a1 = context.run_in_background(operation1)
    a2 = context.run_in_background(operation2)

-    result = await defer.gatherResults([a1, a2])
+    result = await make_deferred_yieldable(defer.gatherResults([a1, a2]))
 ```

-`background_process_metrics.run_as_background_process` also exists if you want some
-automatic tracing and metrics for the background task.
+## A note on garbage-collection of awaitable chains
+
+It turns out that our logcontext rules do not play nicely with awaitable
+chains which get orphaned and garbage-collected.
+
+Imagine we have some code that looks like this:
+
+```python
+listener_queue = []
+
+def on_something_interesting():
+    for d in listener_queue:
+        d.callback("foo")
+
+async def await_something_interesting():
+    new_awaitable = defer.Deferred()
+    listener_queue.append(new_awaitable)
+
+    with PreserveLoggingContext():
+        await new_awaitable
+```
+
+Obviously, the idea here is that we have a bunch of things which are
+waiting for an event. (It's just an example of the problem here, but a
+relatively common one.)
+
+Now let's imagine two further things happen. First of all, whatever was
+waiting for the interesting thing goes away. (Perhaps the request times
+out, or something *even more* interesting happens.)
+
+Secondly, let's suppose that we decide that the interesting thing is
+never going to happen, and we reset the listener queue:
+
+```python
+def reset_listener_queue():
+    listener_queue.clear()
+```
+
+So, both ends of the awaitable chain have now dropped their references,
+and the awaitable chain is now orphaned, and will be garbage-collected at
+some point. Note that `await_something_interesting` is a coroutine, 
+which Python implements as a generator function.  When Python
+garbage-collects generator functions, it gives them a chance to 
+clean up by making the `await` (or `yield`) raise a `GeneratorExit`
+exception. In our case, that means that the `__exit__` handler of
+`PreserveLoggingContext` will carefully restore the request context, but
+there is now nothing waiting for its return, so the request context is
+never cleared.
+
+To reiterate, this problem only arises when *both* ends of a awaitable
+chain are dropped. Dropping the the reference to an awaitable you're
+supposed to be awaiting is bad practice, so this doesn't
+actually happen too much. Unfortunately, when it does happen, it will
+lead to leaked logcontexts which are incredibly hard to track down.
--- a/docs/modules/media_repository_callbacks.md
+++ b/docs/modules/media_repository_callbacks.md
@@ -1,66 +0,0 @@
-# Media repository callbacks
-
-Media repository callbacks allow module developers to customise the behaviour of the
-media repository on a per user basis. Media repository callbacks can be registered
-using the module API's `register_media_repository_callbacks` method.
-
-The available media repository callbacks are:
-
-### `get_media_config_for_user`
-
-_First introduced in Synapse v1.132.0_
-
-```python
-async def get_media_config_for_user(user_id: str) -> Optional[JsonDict]
-```
-
-**<span style="color:red">
-Caution: This callback is currently experimental . The method signature or behaviour
-may change without notice.
-</span>**
-
-Called when processing a request from a client for the
-[media config endpoint](https://spec.matrix.org/latest/client-server-api/#get_matrixclientv1mediaconfig).
-
-The arguments passed to this callback are:
-
-* `user_id`: The Matrix user ID of the user (e.g. `@alice:example.com`) making the request.
-
-If the callback returns a dictionary then it will be used as the body of the response to the
-client.
-
-If multiple modules implement this callback, they will be considered in order. If a
-callback returns `None`, Synapse falls through to the next one. The value of the first
-callback that does not return `None` will be used. If this happens, Synapse will not call
-any of the subsequent implementations of this callback.
-
-If no module returns a non-`None` value then the default media config will be returned.
-
-### `is_user_allowed_to_upload_media_of_size`
-
-_First introduced in Synapse v1.132.0_
-
-```python
-async def is_user_allowed_to_upload_media_of_size(user_id: str, size: int) -> bool
-```
-
-**<span style="color:red">
-Caution: This callback is currently experimental . The method signature or behaviour
-may change without notice.
-</span>**
-
-Called before media is accepted for upload from a user, in case the module needs to
-enforce a different limit for the particular user.
-
-The arguments passed to this callback are:
-
-* `user_id`: The Matrix user ID of the user (e.g. `@alice:example.com`) making the request.
-* `size`: The size in bytes of media that is being requested to upload.
-
-If the module returns `False`, the current request will be denied with the error code
-`M_TOO_LARGE` and the HTTP status code 413.
-
-If multiple modules implement this callback, they will be considered in order. If a callback
-returns `True`, Synapse falls through to the next one. The value of the first callback that
-returns `False` will be used. If this happens, Synapse will not call any of the subsequent
-implementations of this callback.
--- a/docs/modules/ratelimit_callbacks.md
+++ b/docs/modules/ratelimit_callbacks.md
@@ -1,43 +0,0 @@
-# Ratelimit callbacks
-
-Ratelimit callbacks allow module developers to override ratelimit settings dynamically whilst
-Synapse is running. Ratelimit callbacks can be registered using the module API's
-`register_ratelimit_callbacks` method.
-
-The available ratelimit callbacks are:
-
-### `get_ratelimit_override_for_user`
-
-_First introduced in Synapse v1.132.0_
-
-```python
-async def get_ratelimit_override_for_user(user: str, limiter_name: str) -> Optional[synapse.module_api.RatelimitOverride]
-```
-
-**<span style="color:red">
-Caution: This callback is currently experimental . The method signature or behaviour
-may change without notice.
-</span>**
-
-Called when constructing a ratelimiter of a particular type for a user. The module can
-return a `messages_per_second` and `burst_count` to be used, or `None` if
-the default settings are adequate. The user is represented by their Matrix user ID
-(e.g. `@alice:example.com`). The limiter name is usually taken from the `RatelimitSettings` key
-value.
-
-The limiters that are currently supported are:
-
- `rc_invites.per_room`
- `rc_invites.per_user`
- `rc_invites.per_issuer`
-
-The `RatelimitOverride` return type has the following fields:
-
- `per_second: float`. The number of actions that can be performed in a second. `0.0` means that ratelimiting is disabled.
- `burst_count: int`. The number of actions that can be performed before being limited.
-
-If multiple modules implement this callback, they will be considered in order. If a
-callback returns `None`, Synapse falls through to the next one. The value of the first
-callback that does not return `None` will be used. If this happens, Synapse will not call
-any of the subsequent implementations of this callback. If no module returns a non-`None` value
-then the default settings will be used.
--- a/docs/modules/spam_checker_callbacks.md
+++ b/docs/modules/spam_checker_callbacks.md
@@ -80,8 +80,6 @@ Called when processing an invitation, both when one is created locally or when
 receiving an invite over federation. Both inviter and invitee are represented by
 their Matrix user ID (e.g. `@alice:example.com`).

-Note that federated invites will call `federated_user_may_invite` before this callback.
-

 The callback must return one of:
  - `synapse.module_api.NOT_SPAM`, to allow the operation. Other callbacks may still 
@@ -99,34 +97,6 @@ be used. If this happens, Synapse will not call any of the subsequent implementa
 this callback.


-### `federated_user_may_invite`
-
-_First introduced in Synapse v1.133.0_
-
-```python
-async def federated_user_may_invite(event: "synapse.events.EventBase") -> Union["synapse.module_api.NOT_SPAM", "synapse.module_api.errors.Codes", bool]
-```
-
-Called when processing an invitation received over federation. Unlike `user_may_invite`,
-this callback receives the entire event, including any stripped state in the `unsigned`
-section, not just the room and user IDs.
-
-The callback must return one of:
-  - `synapse.module_api.NOT_SPAM`, to allow the operation. Other callbacks may still 
-    decide to reject it.
-  - `synapse.module_api.errors.Codes` to reject the operation with an error code. In case
-    of doubt, `synapse.module_api.errors.Codes.FORBIDDEN` is a good error code.
-
-If multiple modules implement this callback, they will be considered in order. If a
-callback returns `synapse.module_api.NOT_SPAM`, Synapse falls through to the next one.
-The value of the first callback that does not return `synapse.module_api.NOT_SPAM` will
-be used. If this happens, Synapse will not call any of the subsequent implementations of
-this callback.
-
-If all of the callbacks return `synapse.module_api.NOT_SPAM`, Synapse will also fall
-through to the `user_may_invite` callback before approving the invite.
-
-
 ### `user_may_send_3pid_invite`

 _First introduced in Synapse v1.45.0_
@@ -189,19 +159,12 @@ _First introduced in Synapse v1.37.0_

 _Changed in Synapse v1.62.0: `synapse.module_api.NOT_SPAM` and `synapse.module_api.errors.Codes` can be returned by this callback. Returning a boolean is now deprecated._ 

-_Changed in Synapse v1.132.0: Added the `room_config` argument. Callbacks that only expect a single `user_id` argument are still supported._
-
 ```python
-async def user_may_create_room(user_id: str, room_config: synapse.module_api.JsonDict) -> Union["synapse.module_api.NOT_SPAM", "synapse.module_api.errors.Codes", bool]
+async def user_may_create_room(user_id: str) -> Union["synapse.module_api.NOT_SPAM", "synapse.module_api.errors.Codes", bool]
 ```

 Called when processing a room creation request.

-The arguments passed to this callback are:
-
-* `user_id`: The Matrix user ID of the user (e.g. `@alice:example.com`).
-* `room_config`: The contents of the body of a [/createRoom request](https://spec.matrix.org/latest/client-server-api/#post_matrixclientv3createroom) as a dictionary.
-
 The callback must return one of:
  - `synapse.module_api.NOT_SPAM`, to allow the operation. Other callbacks may still 
    decide to reject it.
@@ -276,41 +239,6 @@ be used. If this happens, Synapse will not call any of the subsequent implementa
 this callback.


-### `user_may_send_state_event`
-
-_First introduced in Synapse v1.132.0_
-
-```python
-async def user_may_send_state_event(user_id: str, room_id: str, event_type: str, state_key: str, content: JsonDict) -> Union["synapse.module_api.NOT_SPAM", "synapse.module_api.errors.Codes"]
-```
-
-**<span style="color:red">
-Caution: This callback is currently experimental . The method signature or behaviour
-may change without notice.
-</span>**
-
-Called when processing a request to [send state events](https://spec.matrix.org/latest/client-server-api/#put_matrixclientv3roomsroomidstateeventtypestatekey) to a room.
-
-The arguments passed to this callback are:
-
-* `user_id`: The Matrix user ID of the user (e.g. `@alice:example.com`) sending the state event.
-* `room_id`: The ID of the room that the requested state event is being sent to.
-* `event_type`: The requested type of event.
-* `state_key`: The requested state key.
-* `content`: The requested event contents.
-
-The callback must return one of:
-  - `synapse.module_api.NOT_SPAM`, to allow the operation. Other callbacks may still 
-    decide to reject it.
-  - `synapse.module_api.errors.Codes` to reject the operation with an error code. In case
-    of doubt, `synapse.module_api.errors.Codes.FORBIDDEN` is a good error code.
-
-If multiple modules implement this callback, they will be considered in order. If a
-callback returns `synapse.module_api.NOT_SPAM`, Synapse falls through to the next one.
-The value of the first callback that does not return `synapse.module_api.NOT_SPAM` will
-be used. If this happens, Synapse will not call any of the subsequent implementations of
-this callback.
-

 ### `check_username_for_spam`

@@ -425,8 +353,6 @@ callback returns `False`, Synapse falls through to the next one. The value of th
 callback that does not return `False` will be used. If this happens, Synapse will not call
 any of the subsequent implementations of this callback.

-Note that this check is applied to federation invites as of Synapse v1.130.0.
-

 ### `check_login_for_spam`

--- a/docs/openid.md
+++ b/docs/openid.md
@@ -23,7 +23,6 @@ such as [Github][github-idp].
 [auth0]: https://auth0.com/
 [authentik]: https://goauthentik.io/
 [lemonldap]: https://lemonldap-ng.org/
-[pocket-id]: https://pocket-id.org/
 [okta]: https://www.okta.com/
 [dex-idp]: https://github.com/dexidp/dex
 [keycloak-idp]: https://www.keycloak.org/docs/latest/server_admin/#sso-protocols
@@ -625,32 +624,6 @@ oidc_providers:

 Note that the fields `client_id` and `client_secret` are taken from the CURL response above.

-### Pocket ID
-
-[Pocket ID][pocket-id] is a simple OIDC provider that allows users to authenticate with their passkeys.
-1. Go to `OIDC Clients`
-2. Click on `Add OIDC Client`
-3. Add a name, for example `Synapse`
-4. Add `"https://auth.example.org/_synapse/client/oidc/callback` to `Callback URLs`  # Replace `auth.example.org` with your domain
-5. Click on `Save`
-6. Note down your `Client ID` and `Client secret`, these will be used later
-
-Synapse config:
-
-```yaml
-oidc_providers:
-  - idp_id: pocket_id
-    idp_name: Pocket ID
-    issuer: "https://auth.example.org/" # Replace with your domain
-    client_id: "your-client-id" # Replace with the "Client ID" you noted down before
-    client_secret: "your-client-secret" # Replace with the "Client secret" you noted down before
-    scopes: ["openid", "profile"]
-    user_mapping_provider:
-      config:
-        localpart_template: "{{ user.preferred_username }}"
-        display_name_template: "{{ user.name }}"
-```
-
 ### Shibboleth with OIDC Plugin

 [Shibboleth](https://www.shibboleth.net/) is an open Standard IdP solution widely used by Universities.
--- a/docs/postgres.md
+++ b/docs/postgres.md
@@ -100,14 +100,6 @@ database:
    keepalives_count: 3
 ```

-## Postgresql major version upgrades
-
-Postgres uses separate directories for database locations between major versions (typically `/var/lib/postgresql/<version>/main`).
-
-Therefore, it is recommended to stop Synapse and other services (MAS, etc) before upgrading Postgres major versions.
-
-It is also strongly recommended to [back up](./usage/administration/backups.md#database) your database beforehand to ensure no data loss arising from a failed upgrade.
-
 ## Backups

 Don't forget to [back up](./usage/administration/backups.md#database) your database!
--- a/docs/reverse_proxy.md
+++ b/docs/reverse_proxy.md
@@ -5,10 +5,10 @@ It is recommended to put a reverse proxy such as
 [Apache](https://httpd.apache.org/docs/current/mod/mod_proxy_http.html),
 [Caddy](https://caddyserver.com/docs/quick-starts/reverse-proxy),
 [HAProxy](https://www.haproxy.org/) or
-[relayd](https://man.openbsd.org/relayd.8) in front of Synapse.
-This has the advantage of being able to expose the default HTTPS port (443) to Matrix
-clients without requiring Synapse to bind to a privileged port (port numbers less than
-1024), avoiding the need for `CAP_NET_BIND_SERVICE` or running as root.
+[relayd](https://man.openbsd.org/relayd.8) in front of Synapse. One advantage
+of doing so is that it means that you can expose the default https port
+(443) to Matrix clients without needing to run Synapse with root
+privileges.

 You should configure your reverse proxy to forward requests to `/_matrix` or
 `/_synapse/client` to Synapse, and have it set the `X-Forwarded-For` and
--- a/docs/setup/forward_proxy.md
+++ b/docs/setup/forward_proxy.md
@@ -7,23 +7,8 @@ proxy is supported, not SOCKS proxy or anything else.

 ## Configure

-The proxy settings can be configured in the homeserver configuration file via
-[`http_proxy`](../usage/configuration/config_documentation.md#http_proxy),
-[`https_proxy`](../usage/configuration/config_documentation.md#https_proxy), and
-[`no_proxy_hosts`](../usage/configuration/config_documentation.md#no_proxy_hosts).
-
-`homeserver.yaml` example:
-```yaml
-http_proxy: http://USERNAME:PASSWORD@10.0.1.1:8080/
-https_proxy: http://USERNAME:PASSWORD@proxy.example.com:8080/
-no_proxy_hosts:
-  - master.hostname.example.com
-  - 10.1.0.0/16
-  - 172.30.0.0/16
-```
-
-The proxy settings can also be configured via the `http_proxy`, `https_proxy`,
-`no_proxy` environment variables. The environment variable is not case sensitive.
+The `http_proxy`, `https_proxy`, `no_proxy` environment variables are used to
+specify proxy settings. The environment variable is not case sensitive.
 - `http_proxy`: Proxy server to use for HTTP requests.
 - `https_proxy`: Proxy server to use for HTTPS requests.
 - `no_proxy`: Comma-separated list of hosts, IP addresses, or IP ranges in CIDR
@@ -59,7 +44,7 @@ The proxy will be **used** for:
 - phone-home stats
 - recaptcha validation
 - CAS auth validation
- OpenID Connect (OIDC)
+- OpenID Connect
 - Outbound federation
 - Federation (checking public key revocation)
 - Fetching public keys of other servers
@@ -68,7 +53,7 @@ The proxy will be **used** for:
 It will **not be used** for:

 - Application Services
- Matrix Identity servers
+- Identity servers
 - In worker configurations
  - connections between workers
  - connections from workers to Redis
--- a/docs/setup/installation.md
+++ b/docs/setup/installation.md
@@ -286,7 +286,7 @@ Installing prerequisites on Ubuntu or Debian:
 ```sh
 sudo apt install build-essential python3-dev libffi-dev \
                     python3-pip python3-setuptools sqlite3 \
-                     libssl-dev virtualenv libjpeg-dev libxslt1-dev
+                     libssl-dev virtualenv libjpeg-dev libxslt1-dev libicu-dev
 ```

 ##### ArchLinux
@@ -295,7 +295,7 @@ Installing prerequisites on ArchLinux:

 ```sh
 sudo pacman -S base-devel python python-pip \
-               python-setuptools python-virtualenv sqlite3
+               python-setuptools python-virtualenv sqlite3 icu
 ```

 ##### CentOS/Fedora
@@ -305,7 +305,8 @@ Installing prerequisites on CentOS or Fedora Linux:
 ```sh
 sudo dnf install libtiff-devel libjpeg-devel libzip-devel freetype-devel \
                 libwebp-devel libxml2-devel libxslt-devel libpq-devel \
-                 python3-virtualenv libffi-devel openssl-devel python3-devel
+                 python3-virtualenv libffi-devel openssl-devel python3-devel \
+                 libicu-devel
 sudo dnf group install "Development Tools"
 ```

@@ -332,7 +333,7 @@ dnf install python3.12 python3.12-devel
 ```
 Finally, install common prerequisites
 ```bash
-dnf install libpq5 libpq5-devel lz4 pkgconf
+dnf install libicu libicu-devel libpq5 libpq5-devel lz4 pkgconf
 dnf group install "Development Tools"
 ```
 ###### Using venv module instead of virtualenv command
@@ -364,6 +365,20 @@ xcode-select --install

 Some extra dependencies may be needed. You can use Homebrew (https://brew.sh) for them.

+You may need to install icu, and make the icu binaries and libraries accessible.
+Please follow [the official instructions of PyICU](https://pypi.org/project/PyICU/) to do so.
+
+If you're struggling to get icu discovered, and see:
+```
+  RuntimeError:
+  Please install pkg-config on your system or set the ICU_VERSION environment
+  variable to the version of ICU you have installed.
+```
+despite it being installed and having your `PATH` updated, you can omit this dependency by
+not specifying `--extras all` to `poetry`. If using postgres, you can install Synapse via
+`poetry install --extras saml2 --extras oidc --extras postgres --extras opentracing --extras redis --extras sentry`.
+ICU is not a hard dependency on getting a working installation.
+
 On ARM-based Macs you may also need to install libjpeg and libpq:
 ```sh
 brew install jpeg libpq
@@ -385,7 +400,8 @@ Installing prerequisites on openSUSE:
 ```sh
 sudo zypper in -t pattern devel_basis
 sudo zypper in python-pip python-setuptools sqlite3 python-virtualenv \
-               python-devel libffi-devel libopenssl-devel libjpeg62-devel
+               python-devel libffi-devel libopenssl-devel libjpeg62-devel \
+               libicu-devel
 ```

 ##### OpenBSD
--- a/docs/setup/turn/coturn.md
+++ b/docs/setup/turn/coturn.md
@@ -88,8 +88,7 @@ This will install and start a systemd service called `coturn`.
    denied-peer-ip=172.16.0.0-172.31.255.255

    # recommended additional local peers to block, to mitigate external access to internal services.
-    # https://www.enablesecurity.com/blog/slack-webrtc-turn-compromise-and-bug-bounty/#how-to-fix-an-open-turn-relay-to-address-this-vulnerability
-    # https://www.enablesecurity.com/blog/cve-2020-26262-bypass-of-coturns-access-control-protection/#further-concerns-what-else
+    # https://www.rtcsec.com/article/slack-webrtc-turn-compromise-and-bug-bounty/#how-to-fix-an-open-turn-relay-to-address-this-vulnerability
    no-multicast-peers
    denied-peer-ip=0.0.0.0-0.255.255.255
    denied-peer-ip=100.64.0.0-100.127.255.255
@@ -102,14 +101,6 @@ This will install and start a systemd service called `coturn`.
    denied-peer-ip=198.51.100.0-198.51.100.255
    denied-peer-ip=203.0.113.0-203.0.113.255
    denied-peer-ip=240.0.0.0-255.255.255.255
-    denied-peer-ip=::1
-    denied-peer-ip=64:ff9b::-64:ff9b::ffff:ffff
-    denied-peer-ip=::ffff:0.0.0.0-::ffff:255.255.255.255
-    denied-peer-ip=100::-100::ffff:ffff:ffff:ffff
-    denied-peer-ip=2001::-2001:1ff:ffff:ffff:ffff:ffff:ffff:ffff
-    denied-peer-ip=2002::-2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff
-    denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
-    denied-peer-ip=fe80::-febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff

    # special case the turn server itself so that client->TURN->TURN->client flows work
    # this should be one of the turn server's listening IPs
--- a/docs/spam_checker.md
+++ b/docs/spam_checker.md
@@ -63,7 +63,7 @@ class ExampleSpamChecker:
    async def user_may_invite(self, inviter_userid, invitee_userid, room_id):
        return True  # allow all invites

-    async def user_may_create_room(self, userid, room_config):
+    async def user_may_create_room(self, userid):
        return True  # allow all room creations

    async def user_may_create_room_alias(self, userid, room_alias):
--- a/docs/upgrade.md
+++ b/docs/upgrade.md
@@ -117,102 +117,6 @@ each upgrade are complete before moving on to the next upgrade, to avoid
 stacking them up. You can monitor the currently running background updates with
 [the Admin API](usage/administration/admin_api/background_updates.html#status).

-# Upgrading to v1.136.0
-
-## Deprecate `run_as_background_process` exported as part of the module API interface in favor of `ModuleApi.run_as_background_process`
-
-The `run_as_background_process` function is now a method of the `ModuleApi` class. If
-you were using the function directly from the module API, it will continue to work fine
-but the background process metrics will not include an accurate `server_name` label.
-This kind of metric labeling isn't relevant for many use cases and is used to
-differentiate Synapse instances running in the same Python process (relevant to Synapse
-Pro: Small Hosts). We recommend updating your usage to use the new
-`ModuleApi.run_as_background_process` method to stay on top of future changes.
-
-<details>
-<summary>Example <code>run_as_background_process</code> upgrade</summary>
-
-Before:
-```python
-class MyModule:
-    def __init__(self, module_api: ModuleApi) -> None:
-        run_as_background_process(__name__ + ":setup_database", self.setup_database)
-```
-
-After:
-```python
-class MyModule:
-    def __init__(self, module_api: ModuleApi) -> None:
-        module_api.run_as_background_process(__name__ + ":setup_database", self.setup_database)
-```
-
-</details>
-
-## Metric labels have changed on `synapse_federation_last_received_pdu_time` and `synapse_federation_last_sent_pdu_time`
-
-Previously, the `synapse_federation_last_received_pdu_time` and
-`synapse_federation_last_sent_pdu_time` metrics both used the `server_name` label to
-differentiate between different servers that we send and receive events from.
-
-Since we're now using the `server_name` label to differentiate between different Synapse
-homeserver instances running in the same process, these metrics have been changed as follows:
-
- - `synapse_federation_last_received_pdu_time` now uses the `origin_server_name` label
- - `synapse_federation_last_sent_pdu_time` now uses the `destination_server_name` label
-
-The Grafana dashboard JSON in `contrib/grafana/synapse.json` has been updated to reflect
-this change but you will need to manually update your own existing Grafana dashboards
-using these metrics.
-
-## Stable integration with Matrix Authentication Service
-
-Support for [Matrix Authentication Service (MAS)](https://github.com/element-hq/matrix-authentication-service) is now stable, with a simplified configuration.
-This stable integration requires MAS 0.20.0 or later.
-
-The existing `experimental_features.msc3861` configuration option is now deprecated and will be removed in Synapse v1.137.0.
-
-Synapse deployments already using MAS should now use the new configuration options:
-
-```yaml
-matrix_authentication_service:
-  # Enable the MAS integration
-  enabled: true
-  # The base URL where Synapse will contact MAS
-  endpoint: http://localhost:8080
-  # The shared secret used to authenticate MAS requests, must be the same as `matrix.secret` in the MAS configuration
-  # See https://element-hq.github.io/matrix-authentication-service/reference/configuration.html#matrix
-  secret: "asecurerandomsecretstring"
-```
-
-They must remove the `experimental_features.msc3861` configuration option from their configuration.
-
-They can also remove the client previously used by Synapse [in the MAS configuration](https://element-hq.github.io/matrix-authentication-service/reference/configuration.html#clients) as it is no longer in use.
-
-# Upgrading to v1.135.0
-
-## `on_user_registration` module API callback may now run on any worker
-
-Previously, the `on_user_registration` callback would only run on the main
-process. Modules relying on this callback must assume that they may now be
-called from any worker, not just the main process.
-
-# Upgrading to v1.134.0
-
-## ICU bundled with Synapse
-
-Synapse now uses the Rust `icu` library for improved user search. Installing the
-native ICU library on your system is no longer required.
-
-# Upgrading to v1.130.0
-
-## Documented endpoint which can be delegated to a federation worker
-
-The endpoint `^/_matrix/federation/v1/version$` can be delegated to a federation
-worker. This is not new behaviour, but had not been documented yet. The
-[list of delegatable endpoints](workers.md#synapseappgeneric_worker) has
-been updated to include it. Make sure to check your reverse proxy rules if you
-are using workers.
-
 # Upgrading to v1.126.0

 ## Room list publication rules change
--- a/docs/usage/administration/admin_faq.md
+++ b/docs/usage/administration/admin_faq.md
@@ -255,7 +255,7 @@ line to `/etc/default/matrix-synapse`:

    LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.2

-*Note*: You may need to set `PYTHONMALLOC=malloc` to ensure that `jemalloc` can accurately calculate memory usage. By default, Python uses its internal small-object allocator, which may interfere with jemalloc's ability to track memory consumption correctly. This could prevent the [cache_autotuning](../configuration/config_documentation.md#caches) feature from functioning as expected, as the Python allocator may not reach the memory threshold set by `max_cache_memory_usage`, thus not triggering the cache eviction process.
+*Note*: You may need to set `PYTHONMALLOC=malloc` to ensure that `jemalloc` can accurately calculate memory usage. By default, Python uses its internal small-object allocator, which may interfere with jemalloc's ability to track memory consumption correctly. This could prevent the [cache_autotuning](../configuration/config_documentation.md#caches-and-associated-values) feature from functioning as expected, as the Python allocator may not reach the memory threshold set by `max_cache_memory_usage`, thus not triggering the cache eviction process.

 This made a significant difference on Python 2.7 - it's unclear how
 much of an improvement it provides on Python 3.x.
--- a/docs/usage/administration/monitoring/reporting_homeserver_usage_statistics.md
+++ b/docs/usage/administration/monitoring/reporting_homeserver_usage_statistics.md
@@ -30,7 +30,7 @@ The following statistics are sent to the configured reporting endpoint:
 | `python_version`           | string | The Python version number in use (e.g "3.7.1"). Taken from `sys.version_info`.                                                                                                                                                                                                                  |
 | `total_users`              | int    | The number of registered users on the homeserver.                                                                                                                                                                                                                                               |
 | `total_nonbridged_users`   | int    | The number of users, excluding those created by an Application Service.                                                                                                                                                                                                                         |
-| `daily_user_type_native`   | int    | The number of native, non-guest users created in the last 24 hours.                                                                                                                                                                                                                                        |
+| `daily_user_type_native`   | int    | The number of native users created in the last 24 hours.                                                                                                                                                                                                                                        |
 | `daily_user_type_guest`    | int    | The number of guest users created in the last 24 hours.                                                                                                                                                                                                                                         |
 | `daily_user_type_bridged`  | int    | The number of users created by Application Services in the last 24 hours.                                                                                                                                                                                                                       |
 | `total_room_count`         | int    | The total number of rooms present on the homeserver.                                                                                                                                                                                                                                            |
@@ -50,8 +50,8 @@ The following statistics are sent to the configured reporting endpoint:
 | `cache_factor`             | int    | The configured [`global factor`](../../configuration/config_documentation.md#caching) value for caching.                                                                                                                                                                                        |
 | `event_cache_size`         | int    | The configured [`event_cache_size`](../../configuration/config_documentation.md#caching) value for caching.                                                                                                                                                                                     |
 | `database_engine`          | string | The database engine that is in use. Either "psycopg2" meaning PostgreSQL is in use, or "sqlite3" for SQLite3.                                                                                                                                                                                   |
-| `database_server_version`  | string | The version of the database server. Examples being "10.10" for PostgreSQL server version 10.0, and "3.38.5" for SQLite 3.38.5 installed on the system.                                                                                                                                          |
-| `log_level`                | string | The log level in use. Examples are "INFO", "WARNING", "ERROR", "DEBUG", etc.                                                                                                                                                                                                                    |
+| `database_server_version` | string | The version of the database server. Examples being "10.10" for PostgreSQL server version 10.0, and "3.38.5" for SQLite 3.38.5 installed on the system.                                                                                                                                          |
+| `log_level` | string | The log level in use. Examples are "INFO", "WARNING", "ERROR", "DEBUG", etc.                                                                                                                                                                                                                    |


 [^1]: Native matrix users and guests are always counted. If the
--- a/docs/usage/configuration/config_documentation.md
+++ b/docs/usage/configuration/config_documentation.md
--- a/docs/user_directory.md
+++ b/docs/user_directory.md
@@ -77,11 +77,14 @@ The user provided search term is lowercased and normalized using [NFKC](https://
 this treats the string as case-insensitive, canonicalizes different forms of the
 same text, and maps some "roughly equivalent" characters together.

-The search term is then split into segments using the [`icu_segmenter`
-Rust crate](https://crates.io/crates/icu_segmenter). This crate ships with its
-own dictionary and Long Short Term-Memory (LSTM) machine learning models
-per-language to segment words. Read more [in the crate's
-documentation](https://docs.rs/icu/latest/icu/segmenter/struct.WordSegmenter.html#method.new_auto).
+The search term is then split into words:
+
+* If [ICU](https://en.wikipedia.org/wiki/International_Components_for_Unicode) is
+  available, then the system's [default locale](https://unicode-org.github.io/icu/userguide/locale/#default-locales)
+  will be used to break the search term into words. (See the
+  [installation instructions](setup/installation.md) for how to install ICU.)
+* If unavailable, then runs of ASCII characters, numbers, underscores, and hyphens
+  are considered words.

 The queries for PostgreSQL and SQLite are detailed below, but their overall goal
 is to find matching users, preferring users who are "real" (e.g. not bots,
--- a/docs/workers.md
+++ b/docs/workers.md
@@ -200,7 +200,6 @@ information.
    ^/_matrix/client/(api/v1|r0|v3)/rooms/[^/]+/initialSync$

    # Federation requests
-    ^/_matrix/federation/v1/version$
    ^/_matrix/federation/v1/event/
    ^/_matrix/federation/v1/state/
    ^/_matrix/federation/v1/state_ids/
@@ -238,9 +237,7 @@ information.
    ^/_matrix/client/unstable/im.nheko.summary/summary/.*$
    ^/_matrix/client/(r0|v3|unstable)/account/3pid$
    ^/_matrix/client/(r0|v3|unstable)/account/whoami$
-    ^/_matrix/client/(r0|v3|unstable)/account/deactivate$
-    ^/_matrix/client/(r0|v3)/delete_devices$
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/devices(/|$)
+    ^/_matrix/client/(r0|v3|unstable)/devices$
    ^/_matrix/client/versions$
    ^/_matrix/client/(api/v1|r0|v3|unstable)/voip/turnServer$
    ^/_matrix/client/(api/v1|r0|v3|unstable)/rooms/.*/event/
@@ -252,16 +249,13 @@ information.
    ^/_matrix/client/(api/v1|r0|v3|unstable)/directory/room/.*$
    ^/_matrix/client/(r0|v3|unstable)/capabilities$
    ^/_matrix/client/(r0|v3|unstable)/notifications$
-    ^/_synapse/admin/v1/rooms/[^/]+$

    # Encryption requests
    ^/_matrix/client/(r0|v3|unstable)/keys/query$
    ^/_matrix/client/(r0|v3|unstable)/keys/changes$
    ^/_matrix/client/(r0|v3|unstable)/keys/claim$
    ^/_matrix/client/(r0|v3|unstable)/room_keys/
-    ^/_matrix/client/(r0|v3|unstable)/keys/upload
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/device_signing/upload$
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/signatures/upload$
+    ^/_matrix/client/(r0|v3|unstable)/keys/upload$

    # Registration/login requests
    ^/_matrix/client/(api/v1|r0|v3|unstable)/login$
@@ -326,14 +320,6 @@ For multiple workers not handling the SSO endpoints properly, see
 [#7530](https://github.com/matrix-org/synapse/issues/7530) and
 [#9427](https://github.com/matrix-org/synapse/issues/9427).

-Additionally, when MSC3861 is enabled (`experimental_features.msc3861.enabled`
-set to `true`), the following endpoints can be handled by the worker:
-
-    ^/_synapse/admin/v2/users/[^/]+$
-    ^/_synapse/admin/v1/username_available$
-    ^/_synapse/admin/v1/users/[^/]+/_allow_cross_signing_replacement_without_uia$
-    ^/_synapse/admin/v1/users/[^/]+/devices$
-
 Note that a [HTTP listener](usage/configuration/config_documentation.md#listeners)
 with `client` and `federation` `resources` must be configured in the
 [`worker_listeners`](usage/configuration/config_documentation.md#worker_listeners)
@@ -532,9 +518,8 @@ the stream writer for the `account_data` stream:

 ##### The `receipts` stream

-The `receipts` stream supports multiple writers. The following endpoints
-can be handled by any worker, but should be routed directly to one of the workers
-configured as stream writer for the `receipts` stream:
+The following endpoints should be routed directly to the worker configured as
+the stream writer for the `receipts` stream:

    ^/_matrix/client/(r0|v3|unstable)/rooms/.*/receipt
    ^/_matrix/client/(r0|v3|unstable)/rooms/.*/read_markers
@@ -553,18 +538,6 @@ the stream writer for the `push_rules` stream:

    ^/_matrix/client/(api/v1|r0|v3|unstable)/pushrules/

-##### The `device_lists` stream
-
-The `device_lists` stream supports multiple writers. The following endpoints
-can be handled by any worker, but should be routed directly to one of the workers
-configured as stream writer for the `device_lists` stream:
-
-    ^/_matrix/client/(r0|v3)/delete_devices$
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/devices(/|$)
-    ^/_matrix/client/(r0|v3|unstable)/keys/upload
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/device_signing/upload$
-    ^/_matrix/client/(api/v1|r0|v3|unstable)/keys/signatures/upload$
-
 #### Restrict outbound federation traffic to a specific set of workers

 The
--- a/flake.nix
+++ b/flake.nix
@@ -96,6 +96,7 @@
                  gnumake

                  # Native dependencies for running Synapse.
+                  icu
                  libffi
                  libjpeg
                  libpqxx
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,17 +1,6 @@
 [mypy]
 namespace_packages = True
-# Our custom mypy plugin should remain first in this list.
-#
-# mypy has a limitation where it only chooses the first plugin that returns a non-None
-# value for each hook (known-limitation, c.f.
-# https://github.com/python/mypy/issues/19524). We workaround this by putting our custom
-# plugin first in the plugin order and then manually calling any other conflicting
-# plugin hooks in our own plugin followed by our own checks.
-#
-# If you add a new plugin, make sure to check whether the hooks being used conflict with
-# our custom plugin hooks and if so, manually call the other plugin's hooks in our
-# custom plugin. (also applies to if the plugin is updated in the future)
-plugins = scripts-dev/mypy_synapse_plugin.py, pydantic.mypy, mypy_zope:plugin
+plugins = pydantic.mypy, mypy_zope:plugin, scripts-dev/mypy_synapse_plugin.py
 follow_imports = normal
 show_error_codes = True
 show_traceback = True
@@ -110,6 +99,3 @@ ignore_missing_imports = True

 [mypy-multipart.*]
 ignore_missing_imports = True
-
-[mypy-mypy_zope.*]
-ignore_missing_imports = True
--- a/poetry.lock
+++ b/poetry.lock
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,10 +74,6 @@ select = [
    "PIE",
    # flake8-executable
    "EXE",
-    # flake8-logging
-    "LOG",
-    # flake8-logging-format
-    "G",
 ]

 [tool.ruff.lint.isort]
@@ -101,7 +97,7 @@ module-name = "synapse.synapse_rust"

 [tool.poetry]
 name = "matrix-synapse"
-version = "1.138.0rc1"
+version = "1.128.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "AGPL-3.0-or-later"
@@ -178,13 +174,8 @@ signedjson = "^1.1.0"
 service-identity = ">=18.1.0"
 # Twisted 18.9 introduces some logger improvements that the structured
 # logger utilises
-# Twisted 19.7.0 moves test helpers to a new module and deprecates the old location.
-# Twisted 21.2.0 introduces contextvar support.
-# We could likely bump this to 22.1 without making distro packagers'
-# lives hard (as of 2025-07, distro support is Ubuntu LTS: 22.1, Debian stable: 22.4,
-# RHEL 9: 22.10)
-Twisted = {extras = ["tls"], version = ">=21.2.0"}
-treq = ">=21.5.0"
+Twisted = {extras = ["tls"], version = ">=18.9.0"}
+treq = ">=15.1"
 # Twisted has required pyopenssl 16.0 since about Twisted 16.6.
 pyOpenSSL = ">=16.0.0"
 PyYAML = ">=5.3"
@@ -200,9 +191,7 @@ pymacaroons = ">=0.13.0"
 msgpack = ">=0.5.2"
 phonenumbers = ">=8.2.0"
 # we use GaugeHistogramMetric, which was added in prom-client 0.4.0.
-# `prometheus_client.metrics` was added in 0.5.0, so we require that too.
-# We chose 0.6.0 as that is the current version in Debian Buster (oldstable).
-prometheus-client = ">=0.6.0"
+prometheus-client = ">=0.4.0"
 # we use `order`, which arrived in attrs 19.2.0.
 # Note: 21.1.0 broke `/sync`, see https://github.com/matrix-org/synapse/issues/9936
 attrs = ">=19.2.0,!=21.1.0"
@@ -231,7 +220,7 @@ pydantic = ">=1.7.4, <3"
 # https://github.com/python-poetry/poetry/issues/6154). Both `pip install` and
 # `poetry build` do the right thing without this explicit dependency.
 #
-# This isn't really a dev-dependency, as `poetry install --without dev` will fail,
+# This isn't really a dev-dependency, as `poetry install --no-dev` will fail,
 # but the alternative is to add it to the main list of deps where it isn't
 # needed.
 setuptools_rust = ">=1.3"
@@ -261,6 +250,7 @@ hiredis = { version = "*", optional = true }
 Pympler = { version = "*", optional = true }
 parameterized = { version = ">=0.7.4", optional = true }
 idna = { version = ">=2.5", optional = true }
+pyicu = { version = ">=2.10.2", optional = true }

 [tool.poetry.extras]
 # NB: Packages that should be part of `pip install matrix-synapse[all]` need to be specified
@@ -283,6 +273,10 @@ redis = ["txredisapi", "hiredis"]
 # Required to use experimental `caches.track_memory_usage` config option.
 cache-memory = ["pympler"]
 test = ["parameterized", "idna"]
+# Allows for better search for international characters in the user directory. This
+# requires libicu's development headers installed on the system (e.g. libicu-dev on
+# Debian-based distributions).
+user-search = ["pyicu"]

 # The duplication here is awful. I hate hate hate hate hate it. However, for now I want
 # to ensure you can still `pip install matrix-synapse[all]` like today. Two motivations:
@@ -314,6 +308,8 @@ all = [
    "txredisapi", "hiredis",
    # cache-memory
    "pympler",
+    # improved user search
+    "pyicu",
    # omitted:
    #   - test: it's useful to have this separate from dev deps in the olddeps job
    #   - systemd: this is a system-based requirement
@@ -324,7 +320,7 @@ all = [
 # failing on new releases. Keeping lower bounds loose here means that dependabot
 # can bump versions without having to update the content-hash in the lockfile.
 # This helps prevents merge conflicts when running a batch of dependabot updates.
-ruff = "0.12.10"
+ruff = "0.7.3"
 # Type checking only works with the pydantic.v1 compat module from pydantic v2
 pydantic = "^2"

@@ -333,6 +329,7 @@ lxml-stubs = ">=0.4.0"
 mypy = "*"
 mypy-zope = "*"
 types-bleach = ">=4.1.0"
+types-commonmark = ">=0.9.2"
 types-jsonschema = ">=3.2.0"
 types-netaddr = ">=0.8.0.6"
 types-opentracing = ">=2.4.2"
@@ -355,7 +352,7 @@ idna = ">=2.5"
 click = ">=8.1.3"
 # GitPython was == 3.1.14; bumped to 3.1.20, the first release with type hints.
 GitPython = ">=3.1.20"
-markdown-it-py = ">=3.0.0"
+commonmark = ">=0.9.1"
 pygithub = ">=1.55"
 # The following are executed as commands by the release script.
 twine = "*"
@@ -373,7 +370,7 @@ tomli = ">=1.2.3"
 # runtime errors caused by build system changes.
 # We are happy to raise these upper bounds upon request,
 # provided we check that it's safe to do so (i.e. that CI passes).
-requires = ["poetry-core>=1.1.0,<=2.1.3", "setuptools_rust>=1.3,<=1.11.1"]
+requires = ["poetry-core>=1.1.0,<=1.9.1", "setuptools_rust>=1.3,<=1.10.2"]
 build-backend = "poetry.core.masonry.api"


@@ -381,13 +378,13 @@ build-backend = "poetry.core.masonry.api"
 # Skip unsupported platforms (by us or by Rust).
 # See https://cibuildwheel.readthedocs.io/en/stable/options/#build-skip for the list of build targets.
 # We skip:
-#  - CPython and PyPy 3.8: EOLed
+#  - CPython 3.6, 3.7 and 3.8: EOLed
+#  - PyPy 3.7 and 3.8: we only support Python 3.9+
 #  - musllinux i686: excluded to reduce number of wheels we build.
 #    c.f. https://github.com/matrix-org/synapse/pull/12595#discussion_r963107677
-skip = "cp38* pp38* *-musllinux_i686"
-# Enable non-default builds.
-# "pypy" used to be included by default up until cibuildwheel 3.
-enable = "pypy"
+#  - PyPy on Aarch64 and musllinux on aarch64: too slow to build.
+#    c.f. https://github.com/matrix-org/synapse/pull/14259
+skip = "cp36* cp37* cp38* pp37* pp38* *-musllinux_i686 pp*aarch64 *-musllinux_aarch64"

 # We need a rust compiler.
 #
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -7,7 +7,7 @@ name = "synapse"
 version = "0.1.0"

 edition = "2021"
-rust-version = "1.82.0"
+rust-version = "1.66.0"

 [lib]
 name = "synapse"
@@ -23,36 +23,26 @@ name = "synapse.synapse_rust"

 [dependencies]
 anyhow = "1.0.63"
-base64 = "0.22.1"
+base64 = "0.21.7"
 bytes = "1.6.0"
 headers = "0.4.0"
 http = "1.1.0"
 lazy_static = "1.4.0"
 log = "0.4.17"
 mime = "0.3.17"
-pyo3 = { version = "0.25.1", features = [
+pyo3 = { version = "0.23.5", features = [
    "macros",
    "anyhow",
    "abi3",
    "abi3-py39",
 ] }
-pyo3-log = "0.12.4"
-pythonize = "0.25.0"
+pyo3-log = "0.12.0"
+pythonize = "0.23.0"
 regex = "1.6.0"
 sha2 = "0.10.8"
 serde = { version = "1.0.144", features = ["derive"] }
 serde_json = "1.0.85"
 ulid = "1.1.2"
-icu_segmenter = "2.0.0"
-reqwest = { version = "0.12.15", default-features = false, features = [
-    "http2",
-    "stream",
-    "rustls-tls-native-roots",
-] }
-http-body-util = "0.1.3"
-futures = "0.3.31"
-tokio = { version = "1.44.2", features = ["rt", "rt-multi-thread"] }
-once_cell = "1.18.0"

 [features]
 extension-module = ["pyo3/extension-module"]
--- a/rust/benches/evaluator.rs
+++ b/rust/benches/evaluator.rs
@@ -61,7 +61,6 @@ fn bench_match_exact(b: &mut Bencher) {
        vec![],
        false,
        false,
-        false,
    )
    .unwrap();

@@ -72,10 +71,10 @@ fn bench_match_exact(b: &mut Bencher) {
        },
    ));

-    let matched = eval.match_condition(&condition, None, None, None).unwrap();
+    let matched = eval.match_condition(&condition, None, None).unwrap();
    assert!(matched, "Didn't match");

-    b.iter(|| eval.match_condition(&condition, None, None, None).unwrap());
+    b.iter(|| eval.match_condition(&condition, None, None).unwrap());
 }

 #[bench]
@@ -108,7 +107,6 @@ fn bench_match_word(b: &mut Bencher) {
        vec![],
        false,
        false,
-        false,
    )
    .unwrap();

@@ -119,10 +117,10 @@ fn bench_match_word(b: &mut Bencher) {
        },
    ));

-    let matched = eval.match_condition(&condition, None, None, None).unwrap();
+    let matched = eval.match_condition(&condition, None, None).unwrap();
    assert!(matched, "Didn't match");

-    b.iter(|| eval.match_condition(&condition, None, None, None).unwrap());
+    b.iter(|| eval.match_condition(&condition, None, None).unwrap());
 }

 #[bench]
@@ -155,7 +153,6 @@ fn bench_match_word_miss(b: &mut Bencher) {
        vec![],
        false,
        false,
-        false,
    )
    .unwrap();

@@ -166,10 +163,10 @@ fn bench_match_word_miss(b: &mut Bencher) {
        },
    ));

-    let matched = eval.match_condition(&condition, None, None, None).unwrap();
+    let matched = eval.match_condition(&condition, None, None).unwrap();
    assert!(!matched, "Didn't match");

-    b.iter(|| eval.match_condition(&condition, None, None, None).unwrap());
+    b.iter(|| eval.match_condition(&condition, None, None).unwrap());
 }

 #[bench]
@@ -202,7 +199,6 @@ fn bench_eval_message(b: &mut Bencher) {
        vec![],
        false,
        false,
-        false,
    )
    .unwrap();

@@ -214,8 +210,7 @@ fn bench_eval_message(b: &mut Bencher) {
        false,
        false,
        false,
-        false,
    );

-    b.iter(|| eval.run(&rules, Some("bob"), Some("person"), None));
+    b.iter(|| eval.run(&rules, Some("bob"), Some("person")));
 }
--- a/rust/src/errors.rs
+++ b/rust/src/errors.rs
@@ -58,15 +58,3 @@ impl NotFoundError {
        NotFoundError::new_err(())
    }
 }
-
-import_exception!(synapse.api.errors, HttpResponseException);
-
-impl HttpResponseException {
-    pub fn new(status: StatusCode, bytes: Vec<u8>) -> pyo3::PyErr {
-        HttpResponseException::new_err((
-            status.as_u16(),
-            status.canonical_reason().unwrap_or_default(),
-            bytes,
-        ))
-    }
-}
--- a/rust/src/events/internal_metadata.rs
+++ b/rust/src/events/internal_metadata.rs
@@ -54,7 +54,6 @@ enum EventInternalMetadataData {
    RecheckRedaction(bool),
    SoftFailed(bool),
    ProactivelySend(bool),
-    PolicyServerSpammy(bool),
    Redacted(bool),
    TxnId(Box<str>),
    TokenId(i64),
@@ -97,13 +96,6 @@ impl EventInternalMetadataData {
                    .to_owned()
                    .into_any(),
            ),
-            EventInternalMetadataData::PolicyServerSpammy(o) => (
-                pyo3::intern!(py, "policy_server_spammy"),
-                o.into_pyobject(py)
-                    .unwrap_infallible()
-                    .to_owned()
-                    .into_any(),
-            ),
            EventInternalMetadataData::Redacted(o) => (
                pyo3::intern!(py, "redacted"),
                o.into_pyobject(py)
@@ -163,11 +155,6 @@ impl EventInternalMetadataData {
                    .extract()
                    .with_context(|| format!("'{key_str}' has invalid type"))?,
            ),
-            "policy_server_spammy" => EventInternalMetadataData::PolicyServerSpammy(
-                value
-                    .extract()
-                    .with_context(|| format!("'{key_str}' has invalid type"))?,
-            ),
            "redacted" => EventInternalMetadataData::Redacted(
                value
                    .extract()
@@ -440,17 +427,6 @@ impl EventInternalMetadata {
        set_property!(self, ProactivelySend, obj);
    }

-    #[getter]
-    fn get_policy_server_spammy(&self) -> PyResult<bool> {
-        Ok(get_property_opt!(self, PolicyServerSpammy)
-            .copied()
-            .unwrap_or(false))
-    }
-    #[setter]
-    fn set_policy_server_spammy(&mut self, obj: bool) {
-        set_property!(self, PolicyServerSpammy, obj);
-    }
-
    #[getter]
    fn get_redacted(&self) -> PyResult<bool> {
        let bool = get_property!(self, Redacted)?;
--- a/rust/src/http_client.rs
+++ b/rust/src/http_client.rs
@@ -1,303 +0,0 @@
-/*
- * This file is licensed under the Affero General Public License (AGPL) version 3.
- *
- * Copyright (C) 2025 New Vector, Ltd
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * See the GNU Affero General Public License for more details:
- * <https://www.gnu.org/licenses/agpl-3.0.html>.
- */
-
-use std::{collections::HashMap, future::Future};
-
-use anyhow::Context;
-use futures::TryStreamExt;
-use once_cell::sync::OnceCell;
-use pyo3::{create_exception, exceptions::PyException, prelude::*};
-use reqwest::RequestBuilder;
-use tokio::runtime::Runtime;
-
-use crate::errors::HttpResponseException;
-
-create_exception!(
-    synapse.synapse_rust.http_client,
-    RustPanicError,
-    PyException,
-    "A panic which happened in a Rust future"
-);
-
-impl RustPanicError {
-    fn from_panic(panic_err: &(dyn std::any::Any + Send + 'static)) -> PyErr {
-        // Apparently this is how you extract the panic message from a panic
-        let panic_message = if let Some(str_slice) = panic_err.downcast_ref::<&str>() {
-            str_slice
-        } else if let Some(string) = panic_err.downcast_ref::<String>() {
-            string
-        } else {
-            "unknown error"
-        };
-        Self::new_err(panic_message.to_owned())
-    }
-}
-
-/// This is the name of the attribute where we store the runtime on the reactor
-static TOKIO_RUNTIME_ATTR: &str = "__synapse_rust_tokio_runtime";
-
-/// A Python wrapper around a Tokio runtime.
-///
-/// This allows us to 'store' the runtime on the reactor instance, starting it
-/// when the reactor starts, and stopping it when the reactor shuts down.
-#[pyclass]
-struct PyTokioRuntime {
-    runtime: Option<Runtime>,
-}
-
-#[pymethods]
-impl PyTokioRuntime {
-    fn start(&mut self) -> PyResult<()> {
-        // TODO: allow customization of the runtime like the number of threads
-        let runtime = tokio::runtime::Builder::new_multi_thread()
-            .worker_threads(4)
-            .enable_all()
-            .build()?;
-
-        self.runtime = Some(runtime);
-
-        Ok(())
-    }
-
-    fn shutdown(&mut self) -> PyResult<()> {
-        let runtime = self
-            .runtime
-            .take()
-            .context("Runtime was already shutdown")?;
-
-        // Dropping the runtime will shut it down
-        drop(runtime);
-
-        Ok(())
-    }
-}
-
-impl PyTokioRuntime {
-    /// Get the handle to the Tokio runtime, if it is running.
-    fn handle(&self) -> PyResult<&tokio::runtime::Handle> {
-        let handle = self
-            .runtime
-            .as_ref()
-            .context("Tokio runtime is not running")?
-            .handle();
-
-        Ok(handle)
-    }
-}
-
-/// Get a handle to the Tokio runtime stored on the reactor instance, or create
-/// a new one.
-fn runtime<'a>(reactor: &Bound<'a, PyAny>) -> PyResult<PyRef<'a, PyTokioRuntime>> {
-    if !reactor.hasattr(TOKIO_RUNTIME_ATTR)? {
-        install_runtime(reactor)?;
-    }
-
-    get_runtime(reactor)
-}
-
-/// Install a new Tokio runtime on the reactor instance.
-fn install_runtime(reactor: &Bound<PyAny>) -> PyResult<()> {
-    let py = reactor.py();
-    let runtime = PyTokioRuntime { runtime: None };
-    let runtime = runtime.into_pyobject(py)?;
-
-    // Attach the runtime to the reactor, starting it when the reactor is
-    // running, stopping it when the reactor is shutting down
-    reactor.call_method1("callWhenRunning", (runtime.getattr("start")?,))?;
-    reactor.call_method1(
-        "addSystemEventTrigger",
-        ("after", "shutdown", runtime.getattr("shutdown")?),
-    )?;
-    reactor.setattr(TOKIO_RUNTIME_ATTR, runtime)?;
-
-    Ok(())
-}
-
-/// Get a reference to a Tokio runtime handle stored on the reactor instance.
-fn get_runtime<'a>(reactor: &Bound<'a, PyAny>) -> PyResult<PyRef<'a, PyTokioRuntime>> {
-    // This will raise if `TOKIO_RUNTIME_ATTR` is not set or if it is
-    // not a `Runtime`. Careful that this could happen if the user sets it
-    // manually, or if multiple versions of `pyo3-twisted` are used!
-    let runtime: Bound<PyTokioRuntime> = reactor.getattr(TOKIO_RUNTIME_ATTR)?.extract()?;
-    Ok(runtime.borrow())
-}
-
-/// A reference to the `twisted.internet.defer` module.
-static DEFER: OnceCell<PyObject> = OnceCell::new();
-
-/// Access to the `twisted.internet.defer` module.
-fn defer(py: Python<'_>) -> PyResult<&Bound<PyAny>> {
-    Ok(DEFER
-        .get_or_try_init(|| py.import("twisted.internet.defer").map(Into::into))?
-        .bind(py))
-}
-
-/// Called when registering modules with python.
-pub fn register_module(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
-    let child_module: Bound<'_, PyModule> = PyModule::new(py, "http_client")?;
-    child_module.add_class::<HttpClient>()?;
-
-    // Make sure we fail early if we can't load some modules
-    defer(py)?;
-
-    m.add_submodule(&child_module)?;
-
-    // We need to manually add the module to sys.modules to make `from
-    // synapse.synapse_rust import http_client` work.
-    py.import("sys")?
-        .getattr("modules")?
-        .set_item("synapse.synapse_rust.http_client", child_module)?;
-
-    Ok(())
-}
-
-#[pyclass]
-struct HttpClient {
-    client: reqwest::Client,
-    reactor: PyObject,
-}
-
-#[pymethods]
-impl HttpClient {
-    #[new]
-    pub fn py_new(reactor: Bound<PyAny>, user_agent: &str) -> PyResult<HttpClient> {
-        // Make sure the runtime gets installed
-        let _ = runtime(&reactor)?;
-
-        Ok(HttpClient {
-            client: reqwest::Client::builder()
-                .user_agent(user_agent)
-                .build()
-                .context("building reqwest client")?,
-            reactor: reactor.unbind(),
-        })
-    }
-
-    pub fn get<'a>(
-        &self,
-        py: Python<'a>,
-        url: String,
-        response_limit: usize,
-    ) -> PyResult<Bound<'a, PyAny>> {
-        self.send_request(py, self.client.get(url), response_limit)
-    }
-
-    pub fn post<'a>(
-        &self,
-        py: Python<'a>,
-        url: String,
-        response_limit: usize,
-        headers: HashMap<String, String>,
-        request_body: String,
-    ) -> PyResult<Bound<'a, PyAny>> {
-        let mut builder = self.client.post(url);
-        for (name, value) in headers {
-            builder = builder.header(name, value);
-        }
-        builder = builder.body(request_body);
-
-        self.send_request(py, builder, response_limit)
-    }
-}
-
-impl HttpClient {
-    fn send_request<'a>(
-        &self,
-        py: Python<'a>,
-        builder: RequestBuilder,
-        response_limit: usize,
-    ) -> PyResult<Bound<'a, PyAny>> {
-        create_deferred(py, self.reactor.bind(py), async move {
-            let response = builder.send().await.context("sending request")?;
-
-            let status = response.status();
-
-            let mut stream = response.bytes_stream();
-            let mut buffer = Vec::new();
-            while let Some(chunk) = stream.try_next().await.context("reading body")? {
-                if buffer.len() + chunk.len() > response_limit {
-                    Err(anyhow::anyhow!("Response size too large"))?;
-                }
-
-                buffer.extend_from_slice(&chunk);
-            }
-
-            if !status.is_success() {
-                return Err(HttpResponseException::new(status, buffer));
-            }
-
-            let r = Python::with_gil(|py| buffer.into_pyobject(py).map(|o| o.unbind()))?;
-
-            Ok(r)
-        })
-    }
-}
-
-/// Creates a twisted deferred from the given future, spawning the task on the
-/// tokio runtime.
-///
-/// Does not handle deferred cancellation or contextvars.
-fn create_deferred<'py, F, O>(
-    py: Python<'py>,
-    reactor: &Bound<'py, PyAny>,
-    fut: F,
-) -> PyResult<Bound<'py, PyAny>>
-where
-    F: Future<Output = PyResult<O>> + Send + 'static,
-    for<'a> O: IntoPyObject<'a> + Send + 'static,
-{
-    let deferred = defer(py)?.call_method0("Deferred")?;
-    let deferred_callback = deferred.getattr("callback")?.unbind();
-    let deferred_errback = deferred.getattr("errback")?.unbind();
-
-    let rt = runtime(reactor)?;
-    let handle = rt.handle()?;
-    let task = handle.spawn(fut);
-
-    // Unbind the reactor so that we can pass it to the task
-    let reactor = reactor.clone().unbind();
-    handle.spawn(async move {
-        let res = task.await;
-
-        Python::with_gil(move |py| {
-            // Flatten the panic into standard python error
-            let res = match res {
-                Ok(r) => r,
-                Err(join_err) => match join_err.try_into_panic() {
-                    Ok(panic_err) => Err(RustPanicError::from_panic(&panic_err)),
-                    Err(err) => Err(PyException::new_err(format!("Task cancelled: {err}"))),
-                },
-            };
-
-            // Re-bind the reactor
-            let reactor = reactor.bind(py);
-
-            // Send the result to the deferred, via `.callback(..)` or `.errback(..)`
-            match res {
-                Ok(obj) => {
-                    reactor
-                        .call_method("callFromThread", (deferred_callback, obj), None)
-                        .expect("callFromThread should not fail"); // There's nothing we can really do with errors here
-                }
-                Err(err) => {
-                    reactor
-                        .call_method("callFromThread", (deferred_errback, err), None)
-                        .expect("callFromThread should not fail"); // There's nothing we can really do with errors here
-                }
-            }
-        });
-    });
-
-    Ok(deferred)
-}
--- a/rust/src/identifier.rs
+++ b/rust/src/identifier.rs
@@ -27,7 +27,7 @@ pub enum IdentifierError {

 impl fmt::Display for IdentifierError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{self:?}")
+        write!(f, "{:?}", self)
    }
 }

--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -8,12 +8,10 @@ pub mod acl;
 pub mod errors;
 pub mod events;
 pub mod http;
-pub mod http_client;
 pub mod identifier;
 pub mod matrix_const;
 pub mod push;
 pub mod rendezvous;
-pub mod segmenter;

 lazy_static! {
    static ref LOGGING_HANDLE: ResetHandle = pyo3_log::init();
@@ -52,9 +50,7 @@ fn synapse_rust(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
    acl::register_module(py, m)?;
    push::register_module(py, m)?;
    events::register_module(py, m)?;
-    http_client::register_module(py, m)?;
    rendezvous::register_module(py, m)?;
-    segmenter::register_module(py, m)?;

    Ok(())
 }
--- a/rust/src/push/base_rules.rs
+++ b/rust/src/push/base_rules.rs
@@ -290,26 +290,6 @@ pub const BASE_APPEND_CONTENT_RULES: &[PushRule] = &[PushRule {
 }];

 pub const BASE_APPEND_UNDERRIDE_RULES: &[PushRule] = &[
-    PushRule {
-        rule_id: Cow::Borrowed("global/content/.io.element.msc4306.rule.unsubscribed_thread"),
-        priority_class: 1,
-        conditions: Cow::Borrowed(&[Condition::Known(
-            KnownCondition::Msc4306ThreadSubscription { subscribed: false },
-        )]),
-        actions: Cow::Borrowed(&[]),
-        default: true,
-        default_enabled: true,
-    },
-    PushRule {
-        rule_id: Cow::Borrowed("global/content/.io.element.msc4306.rule.subscribed_thread"),
-        priority_class: 1,
-        conditions: Cow::Borrowed(&[Condition::Known(
-            KnownCondition::Msc4306ThreadSubscription { subscribed: true },
-        )]),
-        actions: Cow::Borrowed(&[Action::Notify, SOUND_ACTION]),
-        default: true,
-        default_enabled: true,
-    },
    PushRule {
        rule_id: Cow::Borrowed("global/underride/.m.rule.call"),
        priority_class: 1,
--- a/rust/src/push/evaluator.rs
+++ b/rust/src/push/evaluator.rs
@@ -106,11 +106,8 @@ pub struct PushRuleEvaluator {
    /// flag as MSC1767 (extensible events core).
    msc3931_enabled: bool,

-    /// If MSC4210 (remove legacy mentions) is enabled.
+    // If MSC4210 (remove legacy mentions) is enabled.
    msc4210_enabled: bool,
-
-    /// If MSC4306 (thread subscriptions) is enabled.
-    msc4306_enabled: bool,
 }

 #[pymethods]
@@ -129,7 +126,6 @@ impl PushRuleEvaluator {
        room_version_feature_flags,
        msc3931_enabled,
        msc4210_enabled,
-        msc4306_enabled,
    ))]
    pub fn py_new(
        flattened_keys: BTreeMap<String, JsonValue>,
@@ -142,7 +138,6 @@ impl PushRuleEvaluator {
        room_version_feature_flags: Vec<String>,
        msc3931_enabled: bool,
        msc4210_enabled: bool,
-        msc4306_enabled: bool,
    ) -> Result<Self, Error> {
        let body = match flattened_keys.get("content.body") {
            Some(JsonValue::Value(SimpleJsonValue::Str(s))) => s.clone().into_owned(),
@@ -161,7 +156,6 @@ impl PushRuleEvaluator {
            room_version_feature_flags,
            msc3931_enabled,
            msc4210_enabled,
-            msc4306_enabled,
        })
    }

@@ -173,19 +167,12 @@ impl PushRuleEvaluator {
    ///
    /// Returns the set of actions, if any, that match (filtering out any
    /// `dont_notify` and `coalesce` actions).
-    ///
-    /// msc4306_thread_subscription_state: (Only populated if MSC4306 is enabled)
-    /// The thread subscription state corresponding to the thread containing this event.
-    /// - `None` if the event is not in a thread, or if MSC4306 is disabled.
-    /// - `Some(true)` if the event is in a thread and the user has a subscription for that thread
-    /// - `Some(false)` if the event is in a thread and the user does NOT have a subscription for that thread
-    #[pyo3(signature = (push_rules, user_id=None, display_name=None, msc4306_thread_subscription_state=None))]
+    #[pyo3(signature = (push_rules, user_id=None, display_name=None))]
    pub fn run(
        &self,
        push_rules: &FilteredPushRules,
        user_id: Option<&str>,
        display_name: Option<&str>,
-        msc4306_thread_subscription_state: Option<bool>,
    ) -> Vec<Action> {
        'outer: for (push_rule, enabled) in push_rules.iter() {
            if !enabled {
@@ -217,12 +204,7 @@ impl PushRuleEvaluator {
                    Condition::Known(KnownCondition::RoomVersionSupports { feature: _ }),
                );

-                match self.match_condition(
-                    condition,
-                    user_id,
-                    display_name,
-                    msc4306_thread_subscription_state,
-                ) {
+                match self.match_condition(condition, user_id, display_name) {
                    Ok(true) => {}
                    Ok(false) => continue 'outer,
                    Err(err) => {
@@ -255,20 +237,14 @@ impl PushRuleEvaluator {
    }

    /// Check if the given condition matches.
-    #[pyo3(signature = (condition, user_id=None, display_name=None, msc4306_thread_subscription_state=None))]
+    #[pyo3(signature = (condition, user_id=None, display_name=None))]
    fn matches(
        &self,
        condition: Condition,
        user_id: Option<&str>,
        display_name: Option<&str>,
-        msc4306_thread_subscription_state: Option<bool>,
    ) -> bool {
-        match self.match_condition(
-            &condition,
-            user_id,
-            display_name,
-            msc4306_thread_subscription_state,
-        ) {
+        match self.match_condition(&condition, user_id, display_name) {
            Ok(true) => true,
            Ok(false) => false,
            Err(err) => {
@@ -286,7 +262,6 @@ impl PushRuleEvaluator {
        condition: &Condition,
        user_id: Option<&str>,
        display_name: Option<&str>,
-        msc4306_thread_subscription_state: Option<bool>,
    ) -> Result<bool, Error> {
        let known_condition = match condition {
            Condition::Known(known) => known,
@@ -418,13 +393,6 @@ impl PushRuleEvaluator {
                        && self.room_version_feature_flags.contains(&flag)
                }
            }
-            KnownCondition::Msc4306ThreadSubscription { subscribed } => {
-                if !self.msc4306_enabled {
-                    false
-                } else {
-                    msc4306_thread_subscription_state == Some(*subscribed)
-                }
-            }
        };

        Ok(result)
@@ -568,11 +536,10 @@ fn push_rule_evaluator() {
        vec![],
        true,
        false,
-        false,
    )
    .unwrap();

-    let result = evaluator.run(&FilteredPushRules::default(), None, Some("bob"), None);
+    let result = evaluator.run(&FilteredPushRules::default(), None, Some("bob"));
    assert_eq!(result.len(), 3);
 }

@@ -599,7 +566,6 @@ fn test_requires_room_version_supports_condition() {
        flags,
        true,
        false,
-        false,
    )
    .unwrap();

@@ -609,7 +575,6 @@ fn test_requires_room_version_supports_condition() {
        &FilteredPushRules::default(),
        Some("@bob:example.org"),
        None,
-        None,
    );
    assert_eq!(result.len(), 3);

@@ -628,17 +593,7 @@ fn test_requires_room_version_supports_condition() {
    };
    let rules = PushRules::new(vec![custom_rule]);
    result = evaluator.run(
-        &FilteredPushRules::py_new(
-            rules,
-            BTreeMap::new(),
-            true,
-            false,
-            true,
-            false,
-            false,
-            false,
-        ),
-        None,
+        &FilteredPushRules::py_new(rules, BTreeMap::new(), true, false, true, false, false),
        None,
        None,
    );
--- a/rust/src/push/mod.rs
+++ b/rust/src/push/mod.rs
@@ -369,10 +369,6 @@ pub enum KnownCondition {
    RoomVersionSupports {
        feature: Cow<'static, str>,
    },
-    #[serde(rename = "io.element.msc4306.thread_subscription")]
-    Msc4306ThreadSubscription {
-        subscribed: bool,
-    },
 }

 impl<'source> IntoPyObject<'source> for Condition {
@@ -551,13 +547,11 @@ pub struct FilteredPushRules {
    msc3664_enabled: bool,
    msc4028_push_encrypted_events: bool,
    msc4210_enabled: bool,
-    msc4306_enabled: bool,
 }

 #[pymethods]
 impl FilteredPushRules {
    #[new]
-    #[allow(clippy::too_many_arguments)]
    pub fn py_new(
        push_rules: PushRules,
        enabled_map: BTreeMap<String, bool>,
@@ -566,7 +560,6 @@ impl FilteredPushRules {
        msc3664_enabled: bool,
        msc4028_push_encrypted_events: bool,
        msc4210_enabled: bool,
-        msc4306_enabled: bool,
    ) -> Self {
        Self {
            push_rules,
@@ -576,7 +569,6 @@ impl FilteredPushRules {
            msc3664_enabled,
            msc4028_push_encrypted_events,
            msc4210_enabled,
-            msc4306_enabled,
        }
    }

@@ -627,10 +619,6 @@ impl FilteredPushRules {
                    return false;
                }

-                if !self.msc4306_enabled && rule.rule_id.contains("/.io.element.msc4306.rule.") {
-                    return false;
-                }
-
                true
            })
            .map(|r| {
--- a/rust/src/segmenter.rs
+++ b/rust/src/segmenter.rs
@@ -1,33 +0,0 @@
-use icu_segmenter::options::WordBreakInvariantOptions;
-use icu_segmenter::WordSegmenter;
-use pyo3::prelude::*;
-
-#[pyfunction]
-pub fn parse_words(text: &str) -> PyResult<Vec<String>> {
-    let segmenter = WordSegmenter::new_auto(WordBreakInvariantOptions::default());
-    let mut parts = Vec::new();
-    let mut last = 0usize;
-
-    // `segment_str` gives us word boundaries as a vector of indexes. Use that
-    // to build a vector of words, and return.
-    for boundary in segmenter.segment_str(text) {
-        if boundary > last {
-            parts.push(text[last..boundary].to_string());
-        }
-        last = boundary;
-    }
-    Ok(parts)
-}
-
-pub fn register_module(py: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
-    let child_module = PyModule::new(py, "segmenter")?;
-    child_module.add_function(wrap_pyfunction!(parse_words, m)?)?;
-
-    m.add_submodule(&child_module)?;
-
-    py.import("sys")?
-        .getattr("modules")?
-        .set_item("synapse.synapse_rust.segmenter", child_module)?;
-
-    Ok(())
-}
--- a/schema/synapse-config.schema.yaml
+++ b/schema/synapse-config.schema.yaml
--- a/schema/v1/Do
+++ b/schema/v1/Do
@@ -1,2 +0,0 @@
-If you want to update the meta schema, copy this folder and increase its version
-number instead.
--- a/schema/v1/meta.schema.json
+++ b/schema/v1/meta.schema.json
@@ -1,29 +0,0 @@
-{
-  "$schema": "https://json-schema.org/draft/2020-12/schema",
-  "$id": "https://element-hq.github.io/synapse/latest/schema/v1/meta.schema.json",
-  "$vocabulary": {
-    "https://json-schema.org/draft/2020-12/vocab/core": true,
-    "https://json-schema.org/draft/2020-12/vocab/applicator": true,
-    "https://json-schema.org/draft/2020-12/vocab/unevaluated": true,
-    "https://json-schema.org/draft/2020-12/vocab/validation": true,
-    "https://json-schema.org/draft/2020-12/vocab/meta-data": true,
-    "https://json-schema.org/draft/2020-12/vocab/format-annotation": true,
-    "https://json-schema.org/draft/2020-12/vocab/content": true,
-    "https://element-hq.github.io/synapse/latest/schema/v1/vocab/documentation": false
-  },
-  "$ref": "https://json-schema.org/draft/2020-12/schema",
-  "properties": {
-    "io.element.type_name": {
-      "type": "string",
-      "description": "Human-readable type of a schema that is displayed instead of the standard JSON Schema types like `object` or `integer`. In case the JSON Schema type contains `null`, this information should be presented alongside the human-readable type name.",
-      "examples": ["duration", "byte size"]
-    },
-    "io.element.post_description": {
-      "type": "string",
-      "description": "Additional description of a schema, better suited to be placed less prominently in the generated documentation, e.g., at the end of a section after listings of items and properties.",
-      "examples": [
-        "### Advanced uses\n\nThe spent coffee grounds can be added to compost for improving soil and growing plants."
-      ]
-    }
-  }
-}
--- a/schema/v1/vocab/documentation.html
+++ b/schema/v1/vocab/documentation.html
@@ -1,11 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-    <head>
-        <meta http-equiv="refresh" content="0; URL=../meta.schema.json">
-        <meta charset="UTF-8">
-        <title>Redirecting to ../meta.schema.json…</title>
-    </head>
-    <body>
-        <p>Redirecting to <a href="../meta.schema.json">../meta.schema.json</a>…</p>
-    </body>
-</html>
--- a/scripts-dev/check_pydantic_models.py
+++ b/scripts-dev/check_pydantic_models.py
@@ -243,7 +243,7 @@ def do_lint() -> Set[str]:
                importlib.import_module(module_info.name)
            except ModelCheckerException as e:
                logger.warning(
-                    "Bad annotation found when importing %s", module_info.name
+                    f"Bad annotation found when importing {module_info.name}"
                )
                failures.add(format_model_checker_exception(e))

--- a/scripts-dev/check_schema_delta.py
+++ b/scripts-dev/check_schema_delta.py
@@ -1,8 +1,6 @@
 #!/usr/bin/env python3

 # Check that no schema deltas have been added to the wrong version.
-#
-# Also checks that schema deltas do not try and create or drop indices.

 import re
 from typing import Any, Dict, List
@@ -11,13 +9,6 @@ import click
 import git

 SCHEMA_FILE_REGEX = re.compile(r"^synapse/storage/schema/(.*)/delta/(.*)/(.*)$")
-INDEX_CREATION_REGEX = re.compile(r"CREATE .*INDEX .*ON ([a-z_]+)", flags=re.IGNORECASE)
-INDEX_DELETION_REGEX = re.compile(r"DROP .*INDEX ([a-z_]+)", flags=re.IGNORECASE)
-TABLE_CREATION_REGEX = re.compile(r"CREATE .*TABLE ([a-z_]+)", flags=re.IGNORECASE)
-
-# The base branch we want to check against. We use the main development branch
-# on the assumption that is what we are developing against.
-DEVELOP_BRANCH = "develop"


@click.command()
@@ -29,9 +20,6 @@ DEVELOP_BRANCH = "develop"
    help="Always output ANSI colours",
 )
 def main(force_colors: bool) -> None:
-    # Return code. Set to non-zero when we encounter an error
-    return_code = 0
-
    click.secho(
        "+++ Checking schema deltas are in the right folder",
        fg="green",
@@ -42,17 +30,17 @@ def main(force_colors: bool) -> None:
    click.secho("Updating repo...")

    repo = git.Repo()
-    repo.remote().fetch(refspec=DEVELOP_BRANCH)
+    repo.remote().fetch()

    click.secho("Getting current schema version...")

-    r = repo.git.show(f"origin/{DEVELOP_BRANCH}:synapse/storage/schema/__init__.py")
+    r = repo.git.show("origin/develop:synapse/storage/schema/__init__.py")

    locals: Dict[str, Any] = {}
    exec(r, locals)
    current_schema_version = locals["SCHEMA_VERSION"]

-    diffs: List[git.Diff] = repo.remote().refs[DEVELOP_BRANCH].commit.diff(None)
+    diffs: List[git.Diff] = repo.remote().refs.develop.commit.diff(None)

    # Get the schema version of the local file to check against current schema on develop
    with open("synapse/storage/schema/__init__.py") as file:
@@ -65,7 +53,7 @@ def main(force_colors: bool) -> None:
        # local schema version must be +/-1 the current schema version on develop
        if abs(local_schema_version - current_schema_version) != 1:
            click.secho(
-                f"The proposed schema version has diverged more than one version from {DEVELOP_BRANCH}, please fix!",
+                "The proposed schema version has diverged more than one version from develop, please fix!",
                fg="red",
                bold=True,
                color=force_colors,
@@ -79,28 +67,21 @@ def main(force_colors: bool) -> None:
    click.secho(f"Current schema version: {current_schema_version}")

    seen_deltas = False
-    bad_delta_files = []
-    changed_delta_files = []
+    bad_files = []
    for diff in diffs:
-        if diff.b_path is None:
-            # We don't lint deleted files.
+        if not diff.new_file or diff.b_path is None:
            continue

        match = SCHEMA_FILE_REGEX.match(diff.b_path)
        if not match:
            continue

-        changed_delta_files.append(diff.b_path)
-
-        if not diff.new_file:
-            continue
-
        seen_deltas = True

        _, delta_version, _ = match.groups()

        if delta_version != str(current_schema_version):
-            bad_delta_files.append(diff.b_path)
+            bad_files.append(diff.b_path)

    if not seen_deltas:
        click.secho(
@@ -111,91 +92,41 @@ def main(force_colors: bool) -> None:
        )
        return

-    if bad_delta_files:
-        bad_delta_files.sort()
-
-        click.secho(
-            "Found deltas in the wrong folder!",
-            fg="red",
-            bold=True,
-            color=force_colors,
-        )
-
-        for f in bad_delta_files:
-            click.secho(
-                f"\t{f}",
-                fg="red",
-                bold=True,
-                color=force_colors,
-            )
-
-        click.secho()
-        click.secho(
-            f"Please move these files to delta/{current_schema_version}/",
-            fg="red",
-            bold=True,
-            color=force_colors,
-        )
-
-    else:
+    if not bad_files:
        click.secho(
            f"All deltas are in the correct folder: {current_schema_version}!",
            fg="green",
            bold=True,
            color=force_colors,
        )
+        return

-    # Make sure we process them in order. This sort works because deltas are numbered
-    # and delta files are also numbered in order.
-    changed_delta_files.sort()
+    bad_files.sort()

-    # Now check that we're not trying to create or drop indices. If we want to
-    # do that they should be in background updates. The exception is when we
-    # create indices on tables we've just created.
-    created_tables = set()
-    for delta_file in changed_delta_files:
-        with open(delta_file) as fd:
-            delta_lines = fd.readlines()
+    click.secho(
+        "Found deltas in the wrong folder!",
+        fg="red",
+        bold=True,
+        color=force_colors,
+    )

-        for line in delta_lines:
-            # Strip SQL comments
-            line = line.split("--", maxsplit=1)[0]
+    for f in bad_files:
+        click.secho(
+            f"\t{f}",
+            fg="red",
+            bold=True,
+            color=force_colors,
+        )

-            # Check and track any tables we create
-            match = TABLE_CREATION_REGEX.search(line)
-            if match:
-                table_name = match.group(1)
-                created_tables.add(table_name)
+    click.secho()
+    click.secho(
+        f"Please move these files to delta/{current_schema_version}/",
+        fg="red",
+        bold=True,
+        color=force_colors,
+    )

-            # Check for dropping indices, these are always banned
-            match = INDEX_DELETION_REGEX.search(line)
-            if match:
-                clause = match.group()
-
-                click.secho(
-                    f"Found delta with index deletion: '{clause}' in {delta_file}\nThese should be in background updates.",
-                    fg="red",
-                    bold=True,
-                    color=force_colors,
-                )
-                return_code = 1
-
-            # Check for index creation, which is only allowed for tables we've
-            # created.
-            match = INDEX_CREATION_REGEX.search(line)
-            if match:
-                clause = match.group()
-                table_name = match.group(1)
-                if table_name not in created_tables:
-                    click.secho(
-                        f"Found delta with index creation: '{clause}' in {delta_file}\nThese should be in background updates.",
-                        fg="red",
-                        bold=True,
-                        color=force_colors,
-                    )
-                    return_code = 1
-
-    click.get_current_context().exit(return_code)
+    click.get_current_context().exit(1)


 if __name__ == "__main__":
--- a/scripts-dev/complement.sh
+++ b/scripts-dev/complement.sh
@@ -229,7 +229,6 @@ test_packages=(
    ./tests/msc3902
    ./tests/msc3967
    ./tests/msc4140
-    ./tests/msc4155
 )

 # Enable dirty runs, so tests will reuse the same container where possible.
--- a/scripts-dev/gen_config_documentation.py
+++ b/scripts-dev/gen_config_documentation.py
@@ -1,510 +0,0 @@
-#!/usr/bin/env python3
-"""Generate Synapse documentation from JSON Schema file."""
-
-import json
-import re
-import sys
-from typing import Any, Optional
-
-import yaml
-
-HEADER = """<!-- Document auto-generated by scripts-dev/gen_config_documentation.py -->
-
-# Configuring Synapse
-
-This is intended as a guide to the Synapse configuration. The behavior of a Synapse instance can be modified
-through the many configuration settings documented here — each config option is explained,
-including what the default is, how to change the default and what sort of behaviour the setting governs.
-Also included is an example configuration for each setting. If you don't want to spend a lot of time
-thinking about options, the config as generated sets sensible defaults for all values. Do note however that the
-database defaults to SQLite, which is not recommended for production usage. You can read more on this subject
-[here](../../setup/installation.md#using-postgresql).
-
-## Config Conventions
-
-Configuration options that take a time period can be set using a number
-followed by a letter. Letters have the following meanings:
-
-* `s` = second
-* `m` = minute
-* `h` = hour
-* `d` = day
-* `w` = week
-* `y` = year
-
-For example, setting `redaction_retention_period: 5m` would remove redacted
-messages from the database after 5 minutes, rather than 5 months.
-
-In addition, configuration options referring to size use the following suffixes:
-
-* `K` = KiB, or 1024 bytes
-* `M` = MiB, or 1,048,576 bytes
-* `G` = GiB, or 1,073,741,824 bytes
-* `T` = TiB, or 1,099,511,627,776 bytes
-
-For example, setting `max_avatar_size: 10M` means that Synapse will not accept files larger than 10,485,760 bytes
-for a user avatar.
-
-## Config Validation
-
-The configuration file can be validated with the following command:
-```bash
-python -m synapse.config read <config key to print> -c <path to config>
-```
-
-To validate the entire file, omit `read <config key to print>`:
-```bash
-python -m synapse.config -c <path to config>
-```
-
-To see how to set other options, check the help reference:
-```bash
-python -m synapse.config --help
-```
-
-### YAML
-The configuration file is a [YAML](https://yaml.org/) file, which means that certain syntax rules
-apply if you want your config file to be read properly. A few helpful things to know:
-* `#` before any option in the config will comment out that setting and either a default (if available) will
-   be applied or Synapse will ignore the setting. Thus, in example #1 below, the setting will be read and
-   applied, but in example #2 the setting will not be read and a default will be applied.
-
-   Example #1:
-   ```yaml
-   pid_file: DATADIR/homeserver.pid
-   ```
-   Example #2:
-   ```yaml
-   #pid_file: DATADIR/homeserver.pid
-   ```
-* Indentation matters! The indentation before a setting
-  will determine whether a given setting is read as part of another
-  setting, or considered on its own. Thus, in example #1, the `enabled` setting
-  is read as a sub-option of the `presence` setting, and will be properly applied.
-
-  However, the lack of indentation before the `enabled` setting in example #2 means
-  that when reading the config, Synapse will consider both `presence` and `enabled` as
-  different settings. In this case, `presence` has no value, and thus a default applied, and `enabled`
-  is an option that Synapse doesn't recognize and thus ignores.
-
-  Example #1:
-  ```yaml
-  presence:
-    enabled: false
-  ```
-  Example #2:
-  ```yaml
-  presence:
-  enabled: false
-  ```
-  In this manual, all top-level settings (ones with no indentation) are identified
-  at the beginning of their section (i.e. "### `example_setting`") and
-  the sub-options, if any, are identified and listed in the body of the section.
-  In addition, each setting has an example of its usage, with the proper indentation
-  shown.
-"""
-SECTION_HEADERS = {
-    "modules": {
-        "title": "Modules",
-        "description": (
-            "Server admins can expand Synapse's functionality with external "
-            "modules.\n\n"
-            "See [here](../../modules/index.md) for more documentation on how "
-            "to configure or create custom modules for Synapse."
-        ),
-    },
-    "server_name": {
-        "title": "Server",
-        "description": "Define your homeserver name and other base options.",
-    },
-    "admin_contact": {
-        "title": "Homeserver blocking",
-        "description": "Useful options for Synapse admins.",
-    },
-    "tls_certificate_path": {
-        "title": "TLS",
-        "description": "Options related to TLS.",
-    },
-    "federation_domain_whitelist": {
-        "title": "Federation",
-        "description": "Options related to federation.",
-    },
-    "event_cache_size": {
-        "title": "Caching",
-        "description": "Options related to caching.",
-    },
-    "database": {
-        "title": "Database",
-        "description": "Config options related to database settings.",
-    },
-    "log_config": {
-        "title": "Logging",
-        "description": ("Config options related to logging."),
-    },
-    "rc_message": {
-        "title": "Ratelimiting",
-        "description": (
-            "Options related to ratelimiting in Synapse.\n\n"
-            "Each ratelimiting configuration is made of two parameters:\n"
-            "- `per_second`: number of requests a client can send per second.\n"
-            "- `burst_count`: number of requests a client can send before "
-            "being throttled."
-        ),
-    },
-    "enable_authenticated_media": {
-        "title": "Media Store",
-        "description": "Config options related to Synapse's media store.",
-    },
-    "recaptcha_public_key": {
-        "title": "Captcha",
-        "description": (
-            "See [here](../../CAPTCHA_SETUP.md) for full details on setting up captcha."
-        ),
-    },
-    "turn_uris": {
-        "title": "TURN",
-        "description": ("Options related to adding a TURN server to Synapse."),
-    },
-    "enable_registration": {
-        "title": "Registration",
-        "description": (
-            "Registration can be rate-limited using the parameters in the "
-            "[Ratelimiting](#ratelimiting) section of this manual."
-        ),
-    },
-    "session_lifetime": {
-        "title": "User session management",
-        "description": ("Config options related to user session management."),
-    },
-    "enable_metrics": {
-        "title": "Metrics",
-        "description": ("Config options related to metrics."),
-    },
-    "room_prejoin_state": {
-        "title": "API Configuration",
-        "description": ("Config settings related to the client/server API."),
-    },
-    "signing_key_path": {
-        "title": "Signing Keys",
-        "description": ("Config options relating to signing keys."),
-    },
-    "saml2_config": {
-        "title": "Single sign-on integration",
-        "description": (
-            "The following settings can be used to make Synapse use a single sign-on provider for authentication, instead of its internal password database.\n\n"
-            "You will probably also want to set the following options to `false` to disable the regular login/registration flows:\n"
-            "* [`enable_registration`](#enable_registration)\n"
-            "* [`password_config.enabled`](#password_config)"
-        ),
-    },
-    "push": {
-        "title": "Push",
-        "description": ("Configuration settings related to push notifications."),
-    },
-    "encryption_enabled_by_default_for_room_type": {
-        "title": "Rooms",
-        "description": ("Config options relating to rooms."),
-    },
-    "opentracing": {
-        "title": "Opentracing",
-        "description": ("Configuration options related to Opentracing support."),
-    },
-    "worker_replication_secret": {
-        "title": "Coordinating workers",
-        "description": (
-            "Configuration options related to workers which belong in the main config file (usually called `homeserver.yaml`). A Synapse deployment can scale horizontally by running multiple Synapse processes called _workers_. Incoming requests are distributed between workers to handle higher loads. Some workers are privileged and can accept requests from other workers.\n\n"
-            "As a result, the worker configuration is divided into two parts.\n\n"
-            "1. The first part (in this section of the manual) defines which shardable tasks are delegated to privileged workers. This allows unprivileged workers to make requests to a privileged worker to act on their behalf.\n"
-            "2. [The second part](#individual-worker-configuration) controls the behaviour of individual workers in isolation.\n\n"
-            "For guidance on setting up workers, see the [worker documentation](../../workers.md)."
-        ),
-    },
-    "worker_app": {
-        "title": "Individual worker configuration",
-        "description": (
-            "These options configure an individual worker, in its worker configuration file. They should be not be provided when configuring the main process.\n\n"
-            "Note also the configuration above for [coordinating a cluster of workers](#coordinating-workers).\n\n"
-            "For guidance on setting up workers, see the [worker documentation](../../workers.md)."
-        ),
-    },
-    "background_updates": {
-        "title": "Background Updates",
-        "description": ("Configuration settings related to background updates."),
-    },
-    "auto_accept_invites": {
-        "title": "Auto Accept Invites",
-        "description": (
-            "Configuration settings related to automatically accepting invites."
-        ),
-    },
-}
-INDENT = "  "
-
-
-has_error = False
-
-
-def error(text: str) -> None:
-    global has_error
-    print(f"ERROR: {text}", file=sys.stderr)
-    has_error = True
-
-
-def indent(text: str, first_line: bool = True) -> str:
-    """Indents each non-empty line of the given text."""
-    text = re.sub(r"(\n)([^\n])", r"\1" + INDENT + r"\2", text)
-    if first_line:
-        text = re.sub(r"^([^\n])", INDENT + r"\1", text)
-
-    return text
-
-
-def em(s: Optional[str]) -> str:
-    """Add emphasis to text."""
-    return f"*{s}*" if s else ""
-
-
-def a(s: Optional[str], suffix: str = " ") -> str:
-    """Appends a space if the given string is not empty."""
-    return s + suffix if s else ""
-
-
-def p(s: Optional[str], prefix: str = " ") -> str:
-    """Prepend a space if the given string is not empty."""
-    return prefix + s if s else ""
-
-
-def resolve_local_refs(schema: dict) -> dict:
-    """Returns the given schema with local $ref properties replaced by their keywords.
-
-    Crude approximation that will override keywords.
-    """
-    defs = schema["$defs"]
-
-    def replace_ref(d: Any) -> Any:
-        if isinstance(d, dict):
-            the_def = {}
-            if "$ref" in d:
-                # Found a "$ref" key.
-                def_name = d["$ref"].removeprefix("#/$defs/")
-                del d["$ref"]
-                the_def = defs[def_name]
-
-            new_dict = {k: replace_ref(v) for k, v in d.items()}
-            if common_keys := (new_dict.keys() & the_def.keys()) - {"properties"}:
-                print(
-                    f"WARN: '{def_name}' overrides keys '{common_keys}'",
-                    file=sys.stderr,
-                )
-
-            new_dict_props = new_dict.get("properties", {})
-            the_def_props = the_def.get("properties", {})
-            if common_props := new_dict_props.keys() & the_def_props.keys():
-                print(
-                    f"WARN: '{def_name}' overrides properties '{common_props}'",
-                    file=sys.stderr,
-                )
-            if merged_props := {**new_dict_props, **the_def_props}:
-                return {**new_dict, **the_def, "properties": merged_props}
-            else:
-                return {**new_dict, **the_def}
-
-        elif isinstance(d, list):
-            return [replace_ref(v) for v in d]
-        else:
-            return d
-
-    return replace_ref(schema)
-
-
-def sep(values: dict) -> str:
-    """Separator between parts of the description."""
-    # If description is multiple paragraphs already, add new ones. Otherwise
-    # append to same paragraph.
-    return "\n\n" if "\n\n" in values.get("description", "") else " "
-
-
-def type_str(values: dict) -> str:
-    """Type of the current value."""
-    if t := values.get("io.element.type_name"):
-        # Allow custom overrides for the type name, for documentation clarity
-        return f"({t})"
-    if not (t := values.get("type")):
-        return ""
-    if not isinstance(t, list):
-        t = [t]
-    joined = "|".join(t)
-    return f"({joined})"
-
-
-def items(values: dict) -> str:
-    """A block listing properties of array items."""
-    if not (items := values.get("items")):
-        return ""
-    if not (item_props := items.get("properties")):
-        return ""
-    return "\nOptions for each entry include:\n\n" + "\n".join(
-        sub_section(k, v) for k, v in item_props.items()
-    )
-
-
-def properties(values: dict) -> str:
-    """A block listing object properties."""
-    if not (properties := values.get("properties")):
-        return ""
-    return "\nThis setting has the following sub-options:\n\n" + "\n".join(
-        sub_section(k, v) for k, v in properties.items()
-    )
-
-
-def sub_section(prop: str, values: dict) -> str:
-    """Formats a bullet point about the given sub-property."""
-    sep = lambda: globals()["sep"](values)
-    type_str = lambda: globals()["type_str"](values)
-    items = lambda: globals()["items"](values)
-    properties = lambda: globals()["properties"](values)
-
-    def default() -> str:
-        try:
-            default = values["default"]
-            return f"Defaults to `{json.dumps(default)}`."
-        except KeyError:
-            return ""
-
-    def description() -> str:
-        if not (description := values.get("description")):
-            error(f"missing description for {prop}")
-            return "MISSING DESCRIPTION\n"
-
-        return f"{description}{p(default(), sep())}\n"
-
-    return (
-        f"* `{prop}`{p(type_str())}: "
-        + f"{indent(description(), first_line=False)}"
-        + indent(items())
-        + indent(properties())
-    )
-
-
-def section(prop: str, values: dict) -> str:
-    """Formats a section about the given property."""
-    sep = lambda: globals()["sep"](values)
-    type_str = lambda: globals()["type_str"](values)
-    items = lambda: globals()["items"](values)
-    properties = lambda: globals()["properties"](values)
-
-    def is_simple_default() -> bool:
-        """Whether the given default is simple enough for a one-liner."""
-        if not (d := values.get("default")):
-            return True
-        return not isinstance(d, dict) and not isinstance(d, list)
-
-    def default_str() -> str:
-        try:
-            default = values["default"]
-        except KeyError:
-            t = values.get("type", [])
-            if "object" == t or "object" in t:
-                # Skip objects as they probably have child defaults.
-                return ""
-            return "There is no default for this option."
-
-        if not is_simple_default():
-            # Show complex defaults as a code block instead.
-            return ""
-        return f"Defaults to `{json.dumps(default)}`."
-
-    def header() -> str:
-        try:
-            title = SECTION_HEADERS[prop]["title"]
-            description = SECTION_HEADERS[prop]["description"]
-            return f"## {title}\n\n{description}\n\n---\n"
-        except KeyError:
-            return ""
-
-    def title() -> str:
-        return f"### `{prop}`\n"
-
-    def description() -> str:
-        if not (description := values.get("description")):
-            error(f"missing description for {prop}")
-            return "MISSING DESCRIPTION\n"
-        return f"\n{a(em(type_str()))}{description}{p(default_str(), sep())}\n"
-
-    def example_str(example: Any) -> str:
-        return "```yaml\n" + f"{yaml.dump({prop: example}, sort_keys=False)}" + "```\n"
-
-    def default_example() -> str:
-        if is_simple_default():
-            return ""
-        default_cfg = example_str(values["default"])
-        return f"\nDefault configuration:\n{default_cfg}"
-
-    def examples() -> str:
-        if not (examples := values.get("examples")):
-            return ""
-
-        examples_str = "\n".join(example_str(e) for e in examples)
-
-        if len(examples) >= 2:
-            return f"\nExample configurations:\n{examples_str}"
-        else:
-            return f"\nExample configuration:\n{examples_str}"
-
-    def post_description() -> str:
-        # Sometimes it's helpful to have a description after the list of fields,
-        # e.g. with a subsection that consists only of text.
-        # This helps with that.
-        if not (description := values.get("io.element.post_description")):
-            return ""
-        return f"\n{description}\n\n"
-
-    return (
-        "---\n"
-        + header()
-        + title()
-        + description()
-        + items()
-        + properties()
-        + default_example()
-        + examples()
-        + post_description()
-    )
-
-
-def main() -> None:
-    # For Windows: reconfigure the terminal to be UTF-8 for `print()` calls.
-    if sys.platform == "win32":
-        sys.stdout.reconfigure(encoding="utf-8")
-
-    def usage(err_msg: str) -> int:
-        script_name = (sys.argv[:1] or ["__main__.py"])[0]
-        print(err_msg, file=sys.stderr)
-        print(f"Usage: {script_name} <JSON Schema file>", file=sys.stderr)
-        print(f"\n{__doc__}", file=sys.stderr)
-        exit(1)
-
-    def read_json_file_arg() -> Any:
-        if len(sys.argv) > 2:
-            exit(usage("Too many arguments."))
-        if not (filepath := (sys.argv[1:] or [""])[0]):
-            exit(usage("No schema file provided."))
-        with open(filepath, "r", encoding="utf-8") as f:
-            # Note: Windows requires that we specify the encoding otherwise it uses
-            # things like CP-1251, which can cause explosions.
-            # See https://github.com/yaml/pyyaml/issues/123 for more info.
-            return yaml.safe_load(f)
-
-    schema = read_json_file_arg()
-    schema = resolve_local_refs(schema)
-
-    sections = (section(k, v) for k, v in schema["properties"].items())
-    print(HEADER + "".join(sections), end="")
-
-    if has_error:
-        print("There were errors.", file=sys.stderr)
-        exit(2)
-
-
-if __name__ == "__main__":
-    main()
--- a/scripts-dev/lint.sh
+++ b/scripts-dev/lint.sh
@@ -139,6 +139,3 @@ cargo-fmt

 # Ensure type hints are correct.
 mypy
-
-# Generate configuration documentation from the JSON Schema
-./scripts-dev/gen_config_documentation.py schema/synapse-config.schema.yaml > docs/usage/configuration/config_documentation.md
--- a/scripts-dev/mypy_synapse_plugin.py
+++ b/scripts-dev/mypy_synapse_plugin.py
@@ -23,195 +23,28 @@
 can crop up, e.g the cache descriptors.
 """

-import enum
-from typing import Callable, Mapping, Optional, Tuple, Type, Union
+from typing import Callable, Optional, Tuple, Type, Union

-import attr
 import mypy.types
 from mypy.erasetype import remove_instance_last_known_values
 from mypy.errorcodes import ErrorCode
-from mypy.nodes import ARG_NAMED_OPT, ListExpr, NameExpr, TempNode, TupleExpr, Var
-from mypy.plugin import (
-    ClassDefContext,
-    Context,
-    FunctionLike,
-    FunctionSigContext,
-    MethodSigContext,
-    MypyFile,
-    Plugin,
-)
+from mypy.nodes import ARG_NAMED_OPT, TempNode, Var
+from mypy.plugin import FunctionSigContext, MethodSigContext, Plugin
 from mypy.typeops import bind_self
 from mypy.types import (
    AnyType,
    CallableType,
    Instance,
    NoneType,
-    Options,
    TupleType,
    TypeAliasType,
    TypeVarType,
    UninhabitedType,
    UnionType,
 )
-from mypy_zope import plugin as mypy_zope_plugin
-from pydantic.mypy import plugin as mypy_pydantic_plugin
-
-PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL = ErrorCode(
-    "missing-server-name-label",
-    "`SERVER_NAME_LABEL` required in metric",
-    category="per-homeserver-tenant-metrics",
-)
-
-PROMETHEUS_METRIC_MISSING_FROM_LIST_TO_CHECK = ErrorCode(
-    "metric-type-missing-from-list",
-    "Every Prometheus metric type must be included in the `prometheus_metric_fullname_to_label_arg_map`.",
-    category="per-homeserver-tenant-metrics",
-)
-
-
-class Sentinel(enum.Enum):
-    # defining a sentinel in this way allows mypy to correctly handle the
-    # type of a dictionary lookup and subsequent type narrowing.
-    UNSET_SENTINEL = object()
-
-
-@attr.s(auto_attribs=True)
-class ArgLocation:
-    keyword_name: str
-    """
-    The keyword argument name for this argument
-    """
-    position: int
-    """
-    The 0-based positional index of this argument
-    """
-
-
-prometheus_metric_fullname_to_label_arg_map: Mapping[str, Optional[ArgLocation]] = {
-    # `Collector` subclasses:
-    "prometheus_client.metrics.MetricWrapperBase": ArgLocation("labelnames", 2),
-    "prometheus_client.metrics.Counter": ArgLocation("labelnames", 2),
-    "prometheus_client.metrics.Histogram": ArgLocation("labelnames", 2),
-    "prometheus_client.metrics.Gauge": ArgLocation("labelnames", 2),
-    "prometheus_client.metrics.Summary": ArgLocation("labelnames", 2),
-    "prometheus_client.metrics.Info": ArgLocation("labelnames", 2),
-    "prometheus_client.metrics.Enum": ArgLocation("labelnames", 2),
-    "synapse.metrics.LaterGauge": ArgLocation("labelnames", 2),
-    "synapse.metrics.InFlightGauge": ArgLocation("labels", 2),
-    "synapse.metrics.GaugeBucketCollector": ArgLocation("labelnames", 2),
-    "prometheus_client.registry.Collector": None,
-    "prometheus_client.registry._EmptyCollector": None,
-    "prometheus_client.registry.CollectorRegistry": None,
-    "prometheus_client.process_collector.ProcessCollector": None,
-    "prometheus_client.platform_collector.PlatformCollector": None,
-    "prometheus_client.gc_collector.GCCollector": None,
-    "synapse.metrics._gc.GCCounts": None,
-    "synapse.metrics._gc.PyPyGCStats": None,
-    "synapse.metrics._reactor_metrics.ReactorLastSeenMetric": None,
-    "synapse.metrics.CPUMetrics": None,
-    "synapse.metrics.jemalloc.JemallocCollector": None,
-    "synapse.util.metrics.DynamicCollectorRegistry": None,
-    "synapse.metrics.background_process_metrics._Collector": None,
-    #
-    # `Metric` subclasses:
-    "prometheus_client.metrics_core.Metric": None,
-    "prometheus_client.metrics_core.UnknownMetricFamily": ArgLocation("labels", 3),
-    "prometheus_client.metrics_core.CounterMetricFamily": ArgLocation("labels", 3),
-    "prometheus_client.metrics_core.GaugeMetricFamily": ArgLocation("labels", 3),
-    "prometheus_client.metrics_core.SummaryMetricFamily": ArgLocation("labels", 3),
-    "prometheus_client.metrics_core.InfoMetricFamily": ArgLocation("labels", 3),
-    "prometheus_client.metrics_core.HistogramMetricFamily": ArgLocation("labels", 3),
-    "prometheus_client.metrics_core.GaugeHistogramMetricFamily": ArgLocation(
-        "labels", 4
-    ),
-    "prometheus_client.metrics_core.StateSetMetricFamily": ArgLocation("labels", 3),
-    "synapse.metrics.GaugeHistogramMetricFamilyWithLabels": ArgLocation(
-        "labelnames", 4
-    ),
-}
-"""
-Map from the fullname of the Prometheus `Metric`/`Collector` classes to the keyword
-argument name and positional index of the label names. This map is useful because
-different metrics have different signatures for passing in label names and we just need
-to know where to look.
-
-This map should include any metrics that we collect with Prometheus. Which corresponds
-to anything that inherits from `prometheus_client.registry.Collector`
-(`synapse.metrics._types.Collector`) or `prometheus_client.metrics_core.Metric`. The
-exhaustiveness of this list is enforced by `analyze_prometheus_metric_classes`.
-
-The entries with `None` always fail the lint because they don't have a `labelnames`
-argument (therefore, no `SERVER_NAME_LABEL`), but we include them here so that people
-can notice and manually allow via a type ignore comment as the source of truth
-should be in the source code.
-"""
-
-# Unbound at this point because we don't know the mypy version yet.
-# This is set in the `plugin(...)` function below.
-MypyPydanticPluginClass: Type[Plugin]
-MypyZopePluginClass: Type[Plugin]


 class SynapsePlugin(Plugin):
-    def __init__(self, options: Options):
-        super().__init__(options)
-        self.mypy_pydantic_plugin = MypyPydanticPluginClass(options)
-        self.mypy_zope_plugin = MypyZopePluginClass(options)
-
-    def set_modules(self, modules: dict[str, MypyFile]) -> None:
-        """
-        This is called by mypy internals. We have to override this to ensure it's also
-        called for any other plugins that we're manually handling.
-
-        Here is how mypy describes it:
-
-        > [`self._modules`] can't be set in `__init__` because it is executed too soon
-        > in `build.py`. Therefore, `build.py` *must* set it later before graph processing
-        > starts by calling `set_modules()`.
-        """
-        super().set_modules(modules)
-        self.mypy_pydantic_plugin.set_modules(modules)
-        self.mypy_zope_plugin.set_modules(modules)
-
-    def get_base_class_hook(
-        self, fullname: str
-    ) -> Optional[Callable[[ClassDefContext], None]]:
-        def _get_base_class_hook(ctx: ClassDefContext) -> None:
-            # Run any `get_base_class_hook` checks from other plugins first.
-            #
-            # Unfortunately, because mypy only chooses the first plugin that returns a
-            # non-None value (known-limitation, c.f.
-            # https://github.com/python/mypy/issues/19524), we workaround this by
-            # putting our custom plugin first in the plugin order and then calling the
-            # other plugin's hook manually followed by our own checks.
-            if callback := self.mypy_pydantic_plugin.get_base_class_hook(fullname):
-                callback(ctx)
-            if callback := self.mypy_zope_plugin.get_base_class_hook(fullname):
-                callback(ctx)
-
-            # Now run our own checks
-            analyze_prometheus_metric_classes(ctx)
-
-        return _get_base_class_hook
-
-    def get_function_signature_hook(
-        self, fullname: str
-    ) -> Optional[Callable[[FunctionSigContext], FunctionLike]]:
-        # Strip off the unique identifier for classes that are dynamically created inside
-        # functions. ex. `synapse.metrics.jemalloc.JemallocCollector@185` (this is the line
-        # number)
-        if "@" in fullname:
-            fullname = fullname.split("@", 1)[0]
-
-        # Look for any Prometheus metrics to make sure they have the `SERVER_NAME_LABEL`
-        # label.
-        if fullname in prometheus_metric_fullname_to_label_arg_map.keys():
-            # Because it's difficult to determine the `fullname` of the function in the
-            # callback, let's just pass it in while we have it.
-            return lambda ctx: check_prometheus_metric_instantiation(ctx, fullname)
-
-        return None
-
    def get_method_signature_hook(
        self, fullname: str
    ) -> Optional[Callable[[MethodSigContext], CallableType]]:
@@ -232,157 +65,6 @@ class SynapsePlugin(Plugin):
        return None


-def analyze_prometheus_metric_classes(ctx: ClassDefContext) -> None:
-    """
-    Cross-check the list of Prometheus metric classes against the
-    `prometheus_metric_fullname_to_label_arg_map` to ensure the list is exhaustive and
-    up-to-date.
-    """
-
-    fullname = ctx.cls.fullname
-    # Strip off the unique identifier for classes that are dynamically created inside
-    # functions. ex. `synapse.metrics.jemalloc.JemallocCollector@185` (this is the line
-    # number)
-    if "@" in fullname:
-        fullname = fullname.split("@", 1)[0]
-
-    if any(
-        ancestor_type.fullname
-        in (
-            # All of the Prometheus metric classes inherit from the `Collector`.
-            "prometheus_client.registry.Collector",
-            "synapse.metrics._types.Collector",
-            # And custom metrics that inherit from `Metric`.
-            "prometheus_client.metrics_core.Metric",
-        )
-        for ancestor_type in ctx.cls.info.mro
-    ):
-        if fullname not in prometheus_metric_fullname_to_label_arg_map:
-            ctx.api.fail(
-                f"Expected {fullname} to be in `prometheus_metric_fullname_to_label_arg_map`, "
-                f"but it was not found. This is a problem with our custom mypy plugin. "
-                f"Please add it to the map.",
-                Context(),
-                code=PROMETHEUS_METRIC_MISSING_FROM_LIST_TO_CHECK,
-            )
-
-
-def check_prometheus_metric_instantiation(
-    ctx: FunctionSigContext, fullname: str
-) -> CallableType:
-    """
-    Ensure that the `prometheus_client` metrics include the `SERVER_NAME_LABEL` label
-    when instantiated.
-
-    This is important because we support multiple Synapse instances running in the same
-    process, where all metrics share a single global `REGISTRY`. The `server_name` label
-    ensures metrics are correctly separated by homeserver.
-
-    There are also some metrics that apply at the process level, such as CPU usage,
-    Python garbage collection, and Twisted reactor tick time, which shouldn't have the
-    `SERVER_NAME_LABEL`. In those cases, use a type ignore comment to disable the
-    check, e.g. `# type: ignore[missing-server-name-label]`.
-
-    Args:
-        ctx: The `FunctionSigContext` from mypy.
-        fullname: The fully qualified name of the function being called,
-            e.g. `"prometheus_client.metrics.Counter"`
-    """
-    # The true signature, this isn't being modified so this is what will be returned.
-    signature = ctx.default_signature
-
-    # Find where the label names argument is in the function signature.
-    arg_location = prometheus_metric_fullname_to_label_arg_map.get(
-        fullname, Sentinel.UNSET_SENTINEL
-    )
-    assert arg_location is not Sentinel.UNSET_SENTINEL, (
-        f"Expected to find {fullname} in `prometheus_metric_fullname_to_label_arg_map`, "
-        f"but it was not found. This is a problem with our custom mypy plugin. "
-        f"Please add it to the map. Context: {ctx.context}"
-    )
-    # People should be using `# type: ignore[missing-server-name-label]` for
-    # process-level metrics that should not have the `SERVER_NAME_LABEL`.
-    if arg_location is None:
-        ctx.api.fail(
-            f"{signature.name} does not have a `labelnames`/`labels` argument "
-            "(if this is untrue, update `prometheus_metric_fullname_to_label_arg_map` "
-            "in our custom mypy plugin) and should probably have a type ignore comment, "
-            "e.g. `# type: ignore[missing-server-name-label]`. The reason we don't "
-            "automatically ignore this is the source of truth should be in the source code.",
-            ctx.context,
-            code=PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL,
-        )
-        return signature
-
-    # Sanity check the arguments are still as expected in this version of
-    # `prometheus_client`. ex. `Counter(name, documentation, labelnames, ...)`
-    #
-    # `signature.arg_names` should be: ["name", "documentation", "labelnames", ...]
-    if (
-        len(signature.arg_names) < (arg_location.position + 1)
-        or signature.arg_names[arg_location.position] != arg_location.keyword_name
-    ):
-        ctx.api.fail(
-            f"Expected argument number {arg_location.position + 1} of {signature.name} to be `labelnames`/`labels`, "
-            f"but got {signature.arg_names[arg_location.position]}",
-            ctx.context,
-        )
-        return signature
-
-    # Ensure mypy is passing the correct number of arguments because we are doing some
-    # dirty indexing into `ctx.args` later on.
-    assert len(ctx.args) == len(signature.arg_names), (
-        f"Expected the list of arguments in the {signature.name} signature ({len(signature.arg_names)})"
-        f"to match the number of arguments from the function signature context ({len(ctx.args)})"
-    )
-
-    # Check if the `labelnames` argument includes `SERVER_NAME_LABEL`
-    #
-    # `ctx.args` should look like this:
-    # ```
-    # [
-    #     [StrExpr("name")],
-    #     [StrExpr("documentation")],
-    #     [ListExpr([StrExpr("label1"), StrExpr("label2")])]
-    #     ...
-    # ]
-    # ```
-    labelnames_arg_expression = (
-        ctx.args[arg_location.position][0]
-        if len(ctx.args[arg_location.position]) > 0
-        else None
-    )
-    if isinstance(labelnames_arg_expression, (ListExpr, TupleExpr)):
-        # Check if the `labelnames` argument includes the `server_name` label (`SERVER_NAME_LABEL`).
-        for labelname_expression in labelnames_arg_expression.items:
-            if (
-                isinstance(labelname_expression, NameExpr)
-                and labelname_expression.fullname == "synapse.metrics.SERVER_NAME_LABEL"
-            ):
-                # Found the `SERVER_NAME_LABEL`, all good!
-                break
-        else:
-            ctx.api.fail(
-                f"Expected {signature.name} to include `SERVER_NAME_LABEL` in the list of labels. "
-                "If this is a process-level metric (vs homeserver-level), use a type ignore comment "
-                "to disable this check.",
-                ctx.context,
-                code=PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL,
-            )
-    else:
-        ctx.api.fail(
-            f"Expected the `labelnames` argument of {signature.name} to be a list of label names "
-            f"(including `SERVER_NAME_LABEL`), but got {labelnames_arg_expression}. "
-            "If this is a process-level metric (vs homeserver-level), use a type ignore comment "
-            "to disable this check.",
-            ctx.context,
-            code=PROMETHEUS_METRIC_MISSING_SERVER_NAME_LABEL,
-        )
-        return signature
-
-    return signature
-
-
 def _get_true_return_type(signature: CallableType) -> mypy.types.Type:
    """
    Get the "final" return type of a callable which might return an Awaitable/Deferred.
@@ -690,13 +372,10 @@ def is_cacheable(


 def plugin(version: str) -> Type[SynapsePlugin]:
-    global MypyPydanticPluginClass, MypyZopePluginClass
    # This is the entry point of the plugin, and lets us deal with the fact
    # that the mypy plugin interface is *not* stable by looking at the version
    # string.
    #
    # However, since we pin the version of mypy Synapse uses in CI, we don't
    # really care.
-    MypyPydanticPluginClass = mypy_pydantic_plugin(version)
-    MypyZopePluginClass = mypy_zope_plugin(version)
    return SynapsePlugin
--- a/scripts-dev/release.py
+++ b/scripts-dev/release.py
@@ -36,11 +36,11 @@ from typing import Any, List, Match, Optional, Union

 import attr
 import click
+import commonmark
 import git
 from click.exceptions import ClickException
 from git import GitCommandError, Repo
 from github import BadCredentialsException, Github
-from markdown_it import MarkdownIt
 from packaging import version


@@ -254,12 +254,6 @@ def _prepare() -> None:
    # Update the version specified in pyproject.toml.
    subprocess.check_output(["poetry", "version", new_version])

-    # Update config schema $id.
-    schema_file = "schema/synapse-config.schema.yaml"
-    major_minor_version = ".".join(new_version.split(".")[:2])
-    url = f"https://element-hq.github.io/synapse/schema/synapse/v{major_minor_version}/synapse-config.schema.json"
-    subprocess.check_output(["sed", "-i", f"0,/^\\$id: .*/s||$id: {url}|", schema_file])
-
    # Generate changelogs.
    generate_and_write_changelog(synapse_repo, current_version, new_version)

@@ -851,7 +845,7 @@ def get_changes_for_version(wanted_version: version.Version) -> str:

    # First we parse the changelog so that we can split it into sections based
    # on the release headings.
-    tokens = MarkdownIt().parse(changes)
+    ast = commonmark.Parser().parse(changes)

    @attr.s(auto_attribs=True)
    class VersionSection:
@@ -862,22 +856,19 @@ def get_changes_for_version(wanted_version: version.Version) -> str:
        end_line: Optional[int] = None  # Is none if its the last entry

    headings: List[VersionSection] = []
-    for i, token in enumerate(tokens):
-        # We look for level 1 headings (h1 tags).
-        if token.type != "heading_open" or token.tag != "h1":
+    for node, _ in ast.walker():
+        # We look for all text nodes that are in a level 1 heading.
+        if node.t != "text":
            continue

-        # The next token should be an inline token containing the heading text
-        if i + 1 < len(tokens) and tokens[i + 1].type == "inline":
-            heading_text = tokens[i + 1].content
-            # The map property contains [line_begin, line_end] (0-based)
-            start_line = token.map[0] if token.map else 0
+        if node.parent.t != "heading" or node.parent.level != 1:
+            continue

-            # If we have a previous heading then we update its `end_line`.
-            if headings:
-                headings[-1].end_line = start_line
+        # If we have a previous heading then we update its `end_line`.
+        if headings:
+            headings[-1].end_line = node.parent.sourcepos[0][0] - 1

-            headings.append(VersionSection(heading_text, start_line))
+        headings.append(VersionSection(node.literal, node.parent.sourcepos[0][0] - 1))

    changes_by_line = changes.split("\n")

--- a/synapse/init.py
+++ b/synapse/init.py
@@ -45,6 +45,16 @@ if py_version < (3, 9):

 # Allow using the asyncio reactor via env var.
 if strtobool(os.environ.get("SYNAPSE_ASYNC_IO_REACTOR", "0")):
+    from incremental import Version
+
+    import twisted
+
+    # We need a bugfix that is included in Twisted 21.2.0:
+    # https://twistedmatrix.com/trac/ticket/9787
+    if twisted.version < Version("Twisted", 21, 2, 0):
+        print("Using asyncio reactor requires Twisted>=21.2.0")
+        sys.exit(1)
+
    import asyncio

    from twisted.internet import asyncioreactor
@@ -86,5 +96,12 @@ import synapse.util  # noqa: E402

 __version__ = synapse.util.SYNAPSE_VERSION

+if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
+    # We import here so that we don't have to install a bunch of deps when
+    # running the packaging tox test.
+    from synapse.util.patch_inline_callbacks import do_patch
+
+    do_patch()
+

 check_rust_lib_up_to_date()
--- a/synapse/_pydantic_compat.py
+++ b/synapse/_pydantic_compat.py
@@ -34,11 +34,9 @@ HAS_PYDANTIC_V2: bool = Version(pydantic_version).major == 2

 if TYPE_CHECKING or HAS_PYDANTIC_V2:
    from pydantic.v1 import (
-        AnyHttpUrl,
        BaseModel,
        Extra,
        Field,
-        FilePath,
        MissingError,
        PydanticValueError,
        StrictBool,
@@ -50,18 +48,15 @@ if TYPE_CHECKING or HAS_PYDANTIC_V2:
        conint,
        constr,
        parse_obj_as,
-        root_validator,
        validator,
    )
    from pydantic.v1.error_wrappers import ErrorWrapper
    from pydantic.v1.typing import get_args
 else:
    from pydantic import (
-        AnyHttpUrl,
        BaseModel,
        Extra,
        Field,
-        FilePath,
        MissingError,
        PydanticValueError,
        StrictBool,
@@ -73,7 +68,6 @@ else:
        conint,
        constr,
        parse_obj_as,
-        root_validator,
        validator,
    )
    from pydantic.error_wrappers import ErrorWrapper
@@ -81,7 +75,6 @@ else:

 __all__ = (
    "HAS_PYDANTIC_V2",
-    "AnyHttpUrl",
    "BaseModel",
    "constr",
    "conbytes",
@@ -90,7 +83,6 @@ __all__ = (
    "ErrorWrapper",
    "Extra",
    "Field",
-    "FilePath",
    "get_args",
    "MissingError",
    "parse_obj_as",
@@ -100,5 +92,4 @@ __all__ = (
    "StrictStr",
    "ValidationError",
    "validator",
-    "root_validator",
 )
--- a/synapse/_scripts/generate_workers_map.py
+++ b/synapse/_scripts/generate_workers_map.py
@@ -153,13 +153,9 @@ def get_registered_paths_for_default(
    """

    hs = MockHomeserver(base_config, worker_app)
-
    # TODO We only do this to avoid an error, but don't need the database etc
    hs.setup()
-    registered_paths = get_registered_paths_for_hs(hs)
-    hs.cleanup()
-
-    return registered_paths
+    return get_registered_paths_for_hs(hs)


 def elide_http_methods_if_unconflicting(
--- a/synapse/_scripts/register_new_matrix_user.py
+++ b/synapse/_scripts/register_new_matrix_user.py
@@ -30,7 +30,6 @@ from typing import Any, Callable, Dict, Optional

 import requests
 import yaml
-from typing_extensions import Never

 _CONFLICTING_SHARED_SECRET_OPTS_ERROR = """\
 Conflicting options 'registration_shared_secret' and 'registration_shared_secret_path'
@@ -41,10 +40,6 @@ _NO_SHARED_SECRET_OPTS_ERROR = """\
 No 'registration_shared_secret' or 'registration_shared_secret_path' defined in config.
 """

-_EMPTY_SHARED_SECRET_PATH_OPTS_ERROR = """\
-The secret given via `registration_shared_secret_path` must not be empty.
-"""
-
 _DEFAULT_SERVER_URL = "http://localhost:8008"


@@ -175,12 +170,6 @@ def register_new_user(
    )


-def bail(err_msg: str) -> Never:
-    """Prints the given message to stderr and exits."""
-    print(err_msg, file=sys.stderr)
-    sys.exit(1)
-
-
 def main() -> None:
    logging.captureWarnings(True)

@@ -273,20 +262,15 @@ def main() -> None:
        assert config is not None

        secret = config.get("registration_shared_secret")
-        if not isinstance(secret, (str, type(None))):
-            bail("registration_shared_secret is not a string.")
        secret_file = config.get("registration_shared_secret_path")
-        if not isinstance(secret_file, (str, type(None))):
-            bail("registration_shared_secret_path is not a string.")
-
-        if not secret and not secret_file:
-            bail(_NO_SHARED_SECRET_OPTS_ERROR)
-        elif secret and secret_file:
-            bail(_CONFLICTING_SHARED_SECRET_OPTS_ERROR)
-        elif not secret and secret_file:
+        if secret_file:
+            if secret:
+                print(_CONFLICTING_SHARED_SECRET_OPTS_ERROR, file=sys.stderr)
+                sys.exit(1)
            secret = _read_file(secret_file, "registration_shared_secret_path").strip()
-            if not secret:
-                bail(_EMPTY_SHARED_SECRET_PATH_OPTS_ERROR)
+        if not secret:
+            print(_NO_SHARED_SECRET_OPTS_ERROR, file=sys.stderr)
+            sys.exit(1)

    if args.password_file:
        password = _read_file(args.password_file, "password-file").strip()
--- a/synapse/_scripts/review_recent_signups.py
+++ b/synapse/_scripts/review_recent_signups.py
@@ -29,21 +29,19 @@ import attr

 from synapse.config._base import (
    Config,
-    ConfigError,
    RootConfig,
    find_config_files,
    read_config_files,
 )
 from synapse.config.database import DatabaseConfig
-from synapse.config.server import ServerConfig
 from synapse.storage.database import DatabasePool, LoggingTransaction, make_conn
 from synapse.storage.engines import create_engine


 class ReviewConfig(RootConfig):
-    "A config class that just pulls out the server and database config"
+    "A config class that just pulls out the database config"

-    config_classes = [ServerConfig, DatabaseConfig]
+    config_classes = [DatabaseConfig]


@attr.s(auto_attribs=True)
@@ -150,10 +148,6 @@ def main() -> None:
    config_dict = read_config_files(config_files)
    config.parse_config_dict(config_dict, "", "")

-    server_name = config.server.server_name
-    if not isinstance(server_name, str):
-        raise ConfigError("Must be a string", ("server_name",))
-
    since_ms = time.time() * 1000 - Config.parse_duration(config_args.since)
    exclude_users_with_email = config_args.exclude_emails
    exclude_users_with_appservice = config_args.exclude_app_service
@@ -165,12 +159,7 @@ def main() -> None:

    engine = create_engine(database_config.config)

-    with make_conn(
-        db_config=database_config,
-        engine=engine,
-        default_txn_name="review_recent_signups",
-        server_name=server_name,
-    ) as db_conn:
+    with make_conn(database_config, engine, "review_recent_signups") as db_conn:
        # This generates a type of Cursor, not LoggingTransaction.
        user_infos = get_recent_users(
            db_conn.cursor(),
--- a/synapse/_scripts/synapse_port_db.py
+++ b/synapse/_scripts/synapse_port_db.py
@@ -99,7 +99,6 @@ from synapse.storage.engines import create_engine
 from synapse.storage.prepare_database import prepare_database
 from synapse.types import ISynapseReactor
 from synapse.util import SYNAPSE_VERSION, Clock
-from synapse.util.stringutils import random_string

 # Cast safety: Twisted does some naughty magic which replaces the
 # twisted.internet.reactor module with a Reactor instance at runtime.
@@ -137,7 +136,6 @@ BOOLEAN_COLUMNS = {
        "has_known_state",
        "is_encrypted",
    ],
-    "thread_subscriptions": ["subscribed", "automatic"],
    "users": ["shadow_banned", "approved", "locked", "suspended"],
    "un_partial_stated_event_stream": ["rejection_status_changed"],
    "users_who_share_rooms": ["share_private"],
@@ -192,18 +190,13 @@ APPEND_ONLY_TABLES = [
    "users",
 ]

-# These tables declare their id column with "PRIMARY KEY AUTOINCREMENT" on sqlite side
-# and with "PRIMARY KEY GENERATED ALWAYS AS IDENTITY" on postgres side. This creates an
-# implicit sequence that needs its value to be migrated separately. Additionally,
-# inserting on postgres side needs to use the "OVERRIDING SYSTEM VALUE" modifier.
-AUTOINCREMENT_TABLES = {
-    "sliding_sync_connections",
-    "sliding_sync_connection_positions",
-    "sliding_sync_connection_required_state",
-    "state_groups_pending_deletion",
-}

 IGNORED_TABLES = {
+    # Porting the auto generated sequence in this table is non-trivial.
+    # None of the entries in this list are mandatory for Synapse to keep working.
+    # If state group disk space is an issue after the port, the
+    # `mark_unreferenced_state_groups_for_deletion_bg_update` background task can be run again.
+    "state_groups_pending_deletion",
    # We don't port these tables, as they're a faff and we can regenerate
    # them anyway.
    "user_directory",
@@ -291,17 +284,11 @@ class Store(
        return self.db_pool.runInteraction("execute_sql", r)

    def insert_many_txn(
-        self,
-        txn: LoggingTransaction,
-        table: str,
-        headers: List[str],
-        rows: List[Tuple],
-        override_system_value: bool = False,
+        self, txn: LoggingTransaction, table: str, headers: List[str], rows: List[Tuple]
    ) -> None:
-        sql = "INSERT INTO %s (%s) %s VALUES (%s)" % (
+        sql = "INSERT INTO %s (%s) VALUES (%s)" % (
            table,
            ", ".join(k for k in headers),
-            "OVERRIDING SYSTEM VALUE" if override_system_value else "",
            ", ".join("%s" for _ in headers),
        )

@@ -324,7 +311,6 @@ class MockHomeserver:
        self.config = config
        self.hostname = config.server.server_name
        self.version_string = SYNAPSE_VERSION
-        self.instance_id = random_string(5)

    def get_clock(self) -> Clock:
        return self.clock
@@ -332,9 +318,6 @@ class MockHomeserver:
    def get_reactor(self) -> ISynapseReactor:
        return reactor

-    def get_instance_id(self) -> str:
-        return self.instance_id
-
    def get_instance_name(self) -> str:
        return "master"

@@ -549,13 +532,7 @@ class Porter:

                def insert(txn: LoggingTransaction) -> None:
                    assert headers is not None
-                    self.postgres_store.insert_many_txn(
-                        txn,
-                        table,
-                        headers[1:],
-                        rows,
-                        override_system_value=table in AUTOINCREMENT_TABLES,
-                    )
+                    self.postgres_store.insert_many_txn(txn, table, headers[1:], rows)

                    self.postgres_store.db_pool.simple_update_one_txn(
                        txn,
@@ -677,28 +654,14 @@ class Porter:
        engine = create_engine(db_config.config)

        hs = MockHomeserver(self.hs_config)
-        server_name = hs.hostname

-        with make_conn(
-            db_config=db_config,
-            engine=engine,
-            default_txn_name="portdb",
-            server_name=server_name,
-        ) as db_conn:
+        with make_conn(db_config, engine, "portdb") as db_conn:
            engine.check_database(
                db_conn, allow_outdated_version=allow_outdated_version
            )
            prepare_database(db_conn, engine, config=self.hs_config)
            # Type safety: ignore that we're using Mock homeservers here.
-            store = Store(
-                DatabasePool(
-                    hs,  # type: ignore[arg-type]
-                    db_config,
-                    engine,
-                ),
-                db_conn,
-                hs,  # type: ignore[arg-type]
-            )
+            store = Store(DatabasePool(hs, db_config, engine), db_conn, hs)  # type: ignore[arg-type]
            db_conn.commit()

        return store
@@ -921,19 +884,6 @@ class Porter:
                ],
            )

-            await self._setup_autoincrement_sequence(
-                "sliding_sync_connection_positions", "connection_position"
-            )
-            await self._setup_autoincrement_sequence(
-                "sliding_sync_connection_required_state", "required_state_id"
-            )
-            await self._setup_autoincrement_sequence(
-                "sliding_sync_connections", "connection_key"
-            )
-            await self._setup_autoincrement_sequence(
-                "state_groups_pending_deletion", "sequence_number"
-            )
-
            # Step 3. Get tables.
            self.progress.set_state("Fetching tables")
            sqlite_tables = await self.sqlite_store.db_pool.simple_select_onecol(
@@ -1115,7 +1065,7 @@ class Porter:

        def get_sent_table_size(txn: LoggingTransaction) -> int:
            txn.execute(
-                "SELECT count(*) FROM sent_transactions WHERE ts >= ?", (yesterday,)
+                "SELECT count(*) FROM sent_transactions" " WHERE ts >= ?", (yesterday,)
            )
            result = txn.fetchone()
            assert result is not None
@@ -1266,49 +1216,6 @@ class Porter:
            "_setup_%s" % (sequence_name,), r
        )

-    async def _setup_autoincrement_sequence(
-        self,
-        sqlite_table_name: str,
-        sqlite_id_column_name: str,
-    ) -> None:
-        """Set a sequence to the correct value. Use where id column was declared with PRIMARY KEY AUTOINCREMENT."""
-        seq_name = await self._pg_get_serial_sequence(
-            sqlite_table_name, sqlite_id_column_name
-        )
-        if seq_name is None:
-            raise Exception(
-                "implicit sequence not found for table " + sqlite_table_name
-            )
-
-        seq_value = await self.sqlite_store.db_pool.simple_select_one_onecol(
-            table="sqlite_sequence",
-            keyvalues={"name": sqlite_table_name},
-            retcol="seq",
-            allow_none=True,
-        )
-        if seq_value is None:
-            return
-
-        def r(txn: LoggingTransaction) -> None:
-            sql = "ALTER SEQUENCE %s RESTART WITH" % (seq_name,)
-            txn.execute(sql + " %s", (seq_value + 1,))
-
-        await self.postgres_store.db_pool.runInteraction("_setup_%s" % (seq_name,), r)
-
-    async def _pg_get_serial_sequence(self, table: str, column: str) -> Optional[str]:
-        """Returns the name of the postgres sequence associated with a column, or NULL."""
-
-        def r(txn: LoggingTransaction) -> Optional[str]:
-            txn.execute("SELECT pg_get_serial_sequence('%s', '%s')" % (table, column))
-            result = txn.fetchone()
-            if not result:
-                return None
-            return result[0]
-
-        return await self.postgres_store.db_pool.runInteraction(
-            "_pg_get_serial_sequence", r
-        )
-
    async def _setup_auth_chain_sequence(self) -> None:
        curr_chain_id: Optional[
            int
--- a/synapse/_scripts/synctl.py
+++ b/synapse/_scripts/synctl.py
@@ -292,9 +292,9 @@ def main() -> None:
            for key in worker_config:
                if key == "worker_app":  # But we allow worker_app
                    continue
-                assert not key.startswith("worker_"), (
-                    "Main process cannot use worker_* config"
-                )
+                assert not key.startswith(
+                    "worker_"
+                ), "Main process cannot use worker_* config"
        else:
            worker_pidfile = worker_config["worker_pid_file"]
            worker_cache_factor = worker_config.get("synctl_cache_factor")
--- a/synapse/_scripts/update_synapse_database.py
+++ b/synapse/_scripts/update_synapse_database.py
@@ -53,7 +53,6 @@ class MockHomeserver(HomeServer):


 def run_background_updates(hs: HomeServer) -> None:
-    server_name = hs.hostname
    main = hs.get_datastores().main
    state = hs.get_datastores().state

@@ -67,11 +66,7 @@ def run_background_updates(hs: HomeServer) -> None:
    def run() -> None:
        # Apply all background updates on the database.
        defer.ensureDeferred(
-            run_as_background_process(
-                "background_updates",
-                server_name,
-                run_background_updates,
-            )
+            run_as_background_process("background_updates", run_background_updates)
        )

    reactor.callWhenRunning(run)
--- a/synapse/api/auth/init.py
+++ b/synapse/api/auth/init.py
@@ -20,13 +20,10 @@
 #
 from typing import TYPE_CHECKING, Optional, Protocol, Tuple

-from prometheus_client import Histogram
-
 from twisted.web.server import Request

 from synapse.appservice import ApplicationService
 from synapse.http.site import SynapseRequest
-from synapse.metrics import SERVER_NAME_LABEL
 from synapse.types import Requester

 if TYPE_CHECKING:
@@ -36,13 +33,6 @@ if TYPE_CHECKING:
 GUEST_DEVICE_ID = "guest_device"


-introspection_response_timer = Histogram(
-    "synapse_api_auth_delegated_introspection_response",
-    "Time taken to get a response for an introspection request",
-    labelnames=["code", SERVER_NAME_LABEL],
-)
-
-
 class Auth(Protocol):
    """The interface that an auth provider must implement."""

--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Quentin Gliech	4ab90c0fe8	Fix the typing of the cache context	2025-04-14 19:19:49 +02:00
Quentin Gliech	c6e3de6ed6	Newsfile	2025-04-14 19:17:01 +02:00
Quentin Gliech	6ce626a1c4	Don't cache introspection failures	2025-04-14 19:16:07 +02:00
				`@@ -0,0 +1 @@`
				`Disable statement timeout during room purge.`
				`@@ -0,0 +1 @@`
				Add `passthrough_authorization_parameters` in OIDC configuration to allow to pass parameters to the authorization grant URL.
				`@@ -0,0 +1 @@`
				`Optimize the build of the complement-synapse image.`
				`@@ -0,0 +1 @@`
				`Add cache to storage functions used to auth requests when using delegated auth.`
				`@@ -0,0 +1 @@`
				`Stop caching introspection failures when delegating auth to MAS.`
				`@@ -1 +0,0 @@`
				Fix `LaterGauge` metrics to collect from all servers.
				`@@ -1 +0,0 @@`
				Store the `LoggingContext` in a `ContextVar` instead of a thread-local variable.
				`@@ -1 +0,0 @@`
				Suppress "Applying schema" log noise bulk when `SYNAPSE_LOG_TESTING` is set.