ci: diff-plan main pushes and run the full candidate matrix on release tags

.github/workflows/ci.yml

@@ -3,6 +3,7 @@ name: CI
 on:
   push:
     branches: [main]
+    tags: ["v*"]
   pull_request:
     branches: [main]
 
@@ -55,8 +56,13 @@ jobs:
         run: |
           if [[ "$EVENT_NAME" == pull_request ]]; then
             bun scripts/ci-plan.mjs --base "$BASE_SHA" --head "$GITHUB_SHA"
+          elif [[ "$GITHUB_REF" == refs/tags/* || "$BEFORE_SHA" =~ ^0+$ || -z "$BEFORE_SHA" ]]; then
+            # Release tags and the first push have no usable diff base, and the
+            # release pipeline consumes their candidate artifacts.
+            bun scripts/ci-plan.mjs --full
           else
-            bun scripts/ci-plan.mjs --full --base "$BEFORE_SHA" --head "$GITHUB_SHA"
+            # Main pushes plan from the pushed diff so untouched surfaces skip.
+            bun scripts/ci-plan.mjs --base "$BEFORE_SHA" --head "$GITHUB_SHA"
           fi
 
   policy:
@@ -196,35 +202,13 @@ jobs:
           bun-version: ${{ env.BUN_VERSION }}
       - env:
           OPENPOST_GO_COVERAGE_FILE: coverage.out
+          OPENPOST_GO_TEST_RACE: "1"
         run: bun run test -- backend
       - uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
         with:
           files: backend/coverage.out
           fail_ci_if_error: false
 
-  backend-race:
-    name: Backend race tests
-    needs: plan
-    if: needs.plan.outputs.backend == 'true'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-        with:
-          sparse-checkout: |
-            /*
-            !/frontend/static/image-editor-models/
-          sparse-checkout-cone-mode: false
-      - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
-        with:
-          go-version-file: backend/go.mod
-          cache-dependency-path: backend/go.sum
-      - uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
-        with:
-          bun-version: ${{ env.BUN_VERSION }}
-      - env:
-          OPENPOST_GO_TEST_RACE: "1"
-        run: bun run test -- backend
-
   hosted-data-plane:
     name: Hosted PostgreSQL and object storage
     needs: plan
@@ -794,8 +778,18 @@ jobs:
         id: manifest
         shell: bash
         run: |
-          latest_tag="$(git for-each-ref --count=1 --sort=-version:refname --format='%(refname:short)' 'refs/tags/v*')"
-          [[ -n "$latest_tag" ]]
+          if [[ "$GITHUB_REF" == refs/tags/* ]]; then
+            # The newest tag is the one being built, so version resolution must
+            # range from the previous release tag; there are no commits after it.
+            latest_tag="$(git describe --match 'v*' --abbrev=0 "${GITHUB_REF_NAME}^" 2>/dev/null || true)"
+            [[ -n "$latest_tag" ]] || {
+              echo "No previous release tag found before ${GITHUB_REF_NAME}." >&2
+              exit 1
+            }
+          else
+            latest_tag="$(git for-each-ref --count=1 --sort=-version:refname --format='%(refname:short)' 'refs/tags/v*')"
+            [[ -n "$latest_tag" ]]
+          fi
           bun run check -- provider-certification
           bun scripts/release-manifest.mjs create --changelog CHANGELOG.md --latest-tag "$latest_tag" --revision "$GITHUB_SHA" --output release-manifest.json
           version="$(jq -er .version release-manifest.json)"
@@ -891,7 +885,6 @@ jobs:
         backend-lint,
         frontend-quality,
         backend,
-        backend-race,
         hosted-data-plane,
         frontend-build,
         marketing-build,

.github/workflows/release.yml

@@ -54,19 +54,30 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         shell: bash
         run: |
-          candidate="$(gh run list \
-            --repo "$GITHUB_REPOSITORY" \
-            --workflow CI \
-            --commit "$GITHUB_SHA" \
-            --event push \
-            --limit 20 \
-            --json databaseId,conclusion \
-            --jq '[.[] | select(.conclusion == "success")][0].databaseId // empty')"
+          # The tag-triggered CI run starts alongside this release and builds
+          # every candidate artifact. Wait for it, then require success.
+          candidate=""
+          for _ in $(seq 1 30); do
+            candidate="$(gh run list \
+              --repo "$GITHUB_REPOSITORY" \
+              --workflow CI \
+              --commit "$GITHUB_SHA" \
+              --event push \
+              --limit 20 \
+              --json databaseId,headBranch \
+              --jq '[.[] | select(.headBranch == "'"$GITHUB_REF_NAME"'")][0].databaseId // empty' 2>/dev/null || true)"
+            [[ -n "$candidate" ]] && break
+            sleep 20
+          done
           [[ -n "$candidate" ]] || {
-            echo "No successful CI run exists for tagged SHA $GITHUB_SHA." >&2
+            echo "No CI run exists for tag $GITHUB_REF_NAME on SHA $GITHUB_SHA." >&2
             exit 1
           }
           [[ "$candidate" =~ ^[0-9]+$ ]]
+          gh run watch "$candidate" \
+            --repo "$GITHUB_REPOSITORY" \
+            --exit-status \
+            --interval 30 > /dev/null
           echo "run_id=$candidate" >> "$GITHUB_OUTPUT"
       - name: Resolve artifacts from their successful CI attempts
         id: artifacts

changes/ci-surface-planning.md

@@ -0,0 +1,8 @@
+### Changed
+
+- CI now runs the full release-candidate matrix for release tags instead of
+  every push to `main`. Main pushes plan from the pushed diff, so untouched
+  surfaces (for example the Android candidate) skip their jobs, and the release
+  workflow waits for the tag's own CI run before promoting its artifacts.
+- Backend tests run once with the race detector and coverage together instead
+  of as two separate suites.