Fix silently-frozen OTA fingerprint baseline with artifacts (#11231)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

.github/workflows/build-submit-android.yml

@@ -170,22 +170,6 @@ jobs:
           payload: |
             {"text": "Android ${{ inputs.profile || 'testflight-android' }} build submitted to Google Play!\n```Version Number: ${{ needs.build.outputs.package-version }}\nBuild Number: ${{ needs.build.outputs.version-code }}```"}
 
-      # Record the commit only after a successful submit, so a failed submit doesn't
-      # advance the "most recent testflight" marker.
-      - name: ⬇️ Restore Cache
-        id: get-base-commit
-        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-        if: ${{ inputs.profile == 'testflight-android' }}
-        with:
-          path: most-recent-testflight-commit.txt
-          key: most-recent-testflight-commit
-
-      - name: ✏️ Write commit hash to cache
-        if: ${{ inputs.profile == 'testflight-android' }}
-        env:
-          GITHUB_SHA: ${{ github.sha }}
-        run: echo $GITHUB_SHA > most-recent-testflight-commit.txt
-
   # Runs in parallel with submit: the QA APK shouldn't be blocked by a Play submission failure.
   universalApk:
     name: Build universal APK

.github/workflows/build-submit-ios.yml

@@ -254,22 +254,6 @@ jobs:
           payload: |
             {"text": "iOS production build for App Store submission is ready!\n```Artifact: Check TestFlight to know when it is available\nVersion Number: ${{ needs.build.outputs.package-version }}\nBuild Number: ${{ needs.build.outputs.build-number }}```"}
 
-      # Record the commit only after a successful submit, so a failed submit doesn't advance
-      # the baseline used for the next testflight build's changelog.
-      - name: ⬇️ Restore Cache
-        id: get-base-commit
-        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-        if: ${{ inputs.profile == 'testflight' }}
-        with:
-          path: most-recent-testflight-commit.txt
-          key: most-recent-testflight-commit
-
-      - name: ✏️ Write commit hash to cache
-        env:
-          GITHUB_SHA: ${{ github.sha }}
-        if: ${{ inputs.profile == 'testflight' }}
-        run: echo $GITHUB_SHA > most-recent-testflight-commit.txt
-
   distribute:
     name: Assign build to TestFlight group
     # fastlane and jq ship preinstalled on the macOS runner image, and this step mostly idles

.github/workflows/bundle-deploy-eas-update.yml

@@ -33,9 +33,11 @@ jobs:
     name: Bundle and Deploy EAS Update
     runs-on: ubuntu-latest
     # id-token: write lets this job mint an OIDC token to assume the denis
-    # publish role; contents: read is still needed for the checkout.
+    # publish role; actions: read loads the fingerprint baseline artifact;
+    # contents: read is still needed for the checkout.
     permissions:
       id-token: write
+      actions: read
       contents: read
     concurrency:
       group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref }}-deploy
@@ -101,12 +103,58 @@ jobs:
           node-version-file: package.json
           cache: pnpm
 
+      - name: ⬇️ Load fingerprint baseline
+        id: baseline
+        if: ${{ (inputs.channel || 'testflight') == 'testflight' }}
+        env:
+          GH_TOKEN: ${{ github.token }}
+          REPOSITORY_ID: ${{ github.repository_id }}
+        run: |
+          url=$(gh api \
+            "repos/${GITHUB_REPOSITORY}/actions/artifacts?name=testflight-native-fingerprint&per_page=100" \
+            --jq "[.artifacts[] | select(
+              .expired == false and
+              .workflow_run.head_branch == \"main\" and
+              .workflow_run.head_repository_id == (\$ENV.REPOSITORY_ID | tonumber)
+            )] | max_by(.created_at) | .archive_download_url" \
+            2>/dev/null || true)
+
+          if [ -n "$url" ] && [ "$url" != "null" ]; then
+            mkdir baseline-artifact
+            if curl -sSL -H "Authorization: Bearer $GH_TOKEN" -o baseline.zip "$url" \
+              && unzip -q baseline.zip -d baseline-artifact; then
+              if jq -e '.sources | type == "array"' \
+                baseline-artifact/native-fingerprint.json >/dev/null; then
+                echo "path=baseline-artifact/native-fingerprint.json" >> "$GITHUB_OUTPUT"
+              else
+                echo "::warning::Ignoring invalid fingerprint baseline artifact."
+              fi
+            else
+              echo "::warning::Could not download fingerprint baseline artifact."
+            fi
+          fi
+
       - name: 📷 Check fingerprint and install dependencies
         id: fingerprint
-        uses: bluesky-social/github-actions/fingerprint-native@b5556913e4aef3964cfd5936d0add3fc0d809bdb # v0.2.0
+        uses: bluesky-social/github-actions/fingerprint-native@abc6a46eb4badf243f55bfd7d6cec42722456300 # v0.3.0
         with:
           profile: ${{ inputs.channel || 'testflight' }}
           previous-commit-tag: ${{ inputs.runtimeVersion }}
+          # The recordBaseline job uploads this marker after a successful deploy;
+          # on the native path, that requires both builds to succeed. A missing
+          # marker forces native builds so they can seed the baseline safely.
+          baseline-fingerprint-path: ${{ steps.baseline.outputs.path }}
+
+      # Hand the full fingerprint to recordBaseline through a short-lived
+      # artifact. It is uploaded unconditionally but promoted to the persistent
+      # baseline only after both native builds succeed.
+      - name: 🚀 Upload native fingerprint
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: native-fingerprint-${{ github.run_id }}
+          path: ${{ steps.fingerprint.outputs.current-fingerprint-path }}
+          retention-days: 1
+          if-no-files-found: error
 
       - name: 🔤 Compile translations
         uses: ./.github/actions/compile-i18n
@@ -195,20 +243,6 @@ jobs:
           RUNTIME_VERSION: ${{ inputs.runtimeVersion }}
           CHANNEL_NAME: ${{ inputs.channel || 'testflight' }}
 
-      - name: ⬇️ Restore Cache
-        id: get-base-commit
-        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-        if: ${{ !steps.fingerprint.outputs.includes-changes &&
-          !steps.version.outputs.version-changed }}
-        with:
-          path: most-recent-testflight-commit.txt
-          key: most-recent-testflight-commit
-
-      - name: ✏️ Write commit hash to cache
-        if: ${{ !steps.fingerprint.outputs.includes-changes &&
-          !steps.version.outputs.version-changed }}
-        run: echo $GITHUB_SHA > most-recent-testflight-commit.txt
-
   buildIfNecessaryIOS:
     name: Build and Submit iOS
     needs: [bundleDeploy]
@@ -270,3 +304,48 @@ jobs:
       ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
       ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
       ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
+
+  # Advance the fingerprint baseline only after BOTH native builds have shipped
+  # the new native surface. This replaces the old actions/cache baseline, which
+  # only advanced on cache eviction and so silently froze - freezing meant every
+  # fingerprint looked changed and OTA updates stopped deploying entirely.
+  #
+  # On the native-build path, this runs only after both builds succeed. A
+  # successful OTA deploy also records its fingerprint, refreshing the
+  # persistent marker's retention without changing the native baseline.
+  #
+  # The persistent artifact replaces the old actions/cache marker without
+  # requiring a PAT or mutable repository variable. Each successful deploy adds
+  # an immutable marker; the next run reads the newest non-expired one using the
+  # built-in GITHUB_TOKEN.
+  recordBaseline:
+    name: Record fingerprint baseline
+    runs-on: ubuntu-latest
+    needs: [bundleDeploy, buildIfNecessaryIOS, buildIfNecessaryAndroid]
+    if: ${{ always() &&
+      (inputs.channel || 'testflight') == 'testflight' &&
+      needs.bundleDeploy.result == 'success' &&
+      (needs.bundleDeploy.outputs.changes-detected != 'true' ||
+      (needs.buildIfNecessaryIOS.result == 'success' &&
+      needs.buildIfNecessaryAndroid.result == 'success')) &&
+      github.repository == 'bluesky-social/social-app' }}
+    permissions:
+      actions: read
+    steps:
+      - name: ⬇️ Download native fingerprint
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: native-fingerprint-${{ github.run_id }}
+
+      - name: 🧐 Validate native fingerprint
+        run: >
+          jq -e '.sources | type == "array"' native-fingerprint.json >/dev/null ||
+          (echo "::error::native fingerprint artifact was invalid; refusing to record it as the baseline." && exit 1)
+
+      - name: 🚀 Record fingerprint baseline
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: testflight-native-fingerprint
+          path: native-fingerprint.json
+          retention-days: 90
+          if-no-files-found: error