[mob] Add daily release workflow for photos (#6815)

## Description

## Tests

.github/workflows/mobile-daily-internal.yml

@@ -0,0 +1,118 @@
+name: "Internal release (photos)"
+
+on:
+  schedule:
+    # Runs daily at 12:30 UTC (6:00 PM IST)
+    - cron: "30 12 * * *"
+  workflow_dispatch: # Allow manual trigger
+
+env:
+  FLUTTER_VERSION: "3.24.3"
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        working-directory: mobile/apps/photos
+
+    steps:
+      - name: Checkout code and submodules
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Setup JDK 17
+        uses: actions/setup-java@v1
+        with:
+          java-version: 17
+
+      - name: Install Flutter ${{ env.FLUTTER_VERSION }}
+        uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+          cache: true
+
+      - name: Increment version code for build
+        run: |
+          CURRENT_VERSION=$(grep '^version:' pubspec.yaml | sed 's/version: //')
+          VERSION_NAME=$(echo $CURRENT_VERSION | cut -d'+' -f1)
+          NEW_BUILD=$(date +%Y%m%d%H%M)
+          NEW_VERSION="${VERSION_NAME}+${NEW_BUILD}"
+
+          sed -i "s/^version: .*/version: $NEW_VERSION/" pubspec.yaml
+          echo "Building with version ${NEW_VERSION}"
+
+      - name: Prepare and validate changelog for Play Store
+        run: |
+          mkdir -p whatsnew
+          CHANGELOG_FILE="scripts/changes.txt"
+          OUTPUT_FILE="whatsnew/en-US.txt"
+
+          # Use provided changelog or fallback
+          if [ -f "$CHANGELOG_FILE" ]; then
+              head -c 500 "$CHANGELOG_FILE" > "$OUTPUT_FILE"
+          else
+              echo "Bug fixes and improvements" > "$OUTPUT_FILE"
+          fi
+
+          # Validate: file exists
+          if [ ! -s "$OUTPUT_FILE" ]; then
+              echo "❌ Changelog is empty."
+              exit 1
+          fi
+
+          # Validate: <= 500 chars
+          LENGTH=$(wc -m < "$OUTPUT_FILE")
+          if [ "$LENGTH" -gt 500 ]; then
+              echo "❌ Changelog exceeds 500 characters ($LENGTH)."
+              exit 1
+          fi
+
+          # Validate: no markdown or HTML
+          if grep -Eq '[\*\_\<\>\[\]\(\)]' "$OUTPUT_FILE"; then
+              echo "❌ Changelog contains markdown/HTML formatting."
+              exit 1
+          fi
+
+          echo "✅ Changelog valid:"
+          cat "$OUTPUT_FILE"
+
+      - name: Setup keys
+        uses: timheuer/base64-to-file@v1
+        with:
+          fileName: "keystore/ente_photos_key.jks"
+          encodedString: ${{ secrets.SIGNING_KEY_PHOTOS }}
+
+      - name: Build PlayStore AAB
+        run: |
+          flutter build appbundle --dart-define=cronetHttpNoPlay=true --release --flavor playstore
+        env:
+          SIGNING_KEY_PATH: "/home/runner/work/_temp/keystore/ente_photos_key.jks"
+          SIGNING_KEY_ALIAS: ${{ secrets.SIGNING_KEY_ALIAS_PHOTOS }}
+          SIGNING_KEY_PASSWORD: ${{ secrets.SIGNING_KEY_PASSWORD_PHOTOS }}
+          SIGNING_STORE_PASSWORD: ${{ secrets.SIGNING_STORE_PASSWORD_PHOTOS }}
+
+      - name: Upload AAB to PlayStore
+        uses: r0adkll/upload-google-play@v1
+        with:
+          serviceAccountJsonPlainText: ${{ secrets.SERVICE_ACCOUNT_JSON }}
+          packageName: io.ente.photos
+          releaseFiles: mobile/apps/photos/build/app/outputs/bundle/playstoreRelease/app-playstore-release.aab
+          track: internal
+          whatsNewDirectory: mobile/apps/photos/whatsnew
+          mappingFile: mobile/apps/photos/build/app/outputs/mapping/playstoreRelease/mapping.txt
+
+      - name: Notify Discord
+        uses: sarisia/actions-status-discord@v1
+        with:
+          webhook: ${{ secrets.DISCORD_INTERNAL_RELEASE_WEBHOOK }}
+          nodetail: true
+          title: "🏆 Daily release Photos (Branch: ${{ github.ref_name }})"
+          description: "[Download](https://play.google.com/store/apps/details?id=io.ente.photos) | [Changelog](https://github.com/ente-io/ente/blob/main/mobile/apps/photos/scripts/changes.txt)"
+          color: 0x00ff00

mobile/apps/photos/scripts/changes.txt

@@ -0,0 +1 @@
+- Gracefully handle heic rendering on Android