ci(release): build tesseract4android from source for F-Droid reproducibility; v0.1.4 (+6)

.forgejo/workflows/release.yml

@@ -63,6 +63,26 @@ jobs:
           keyPassword=$TANE_KEY_PASSWORD
           EOF
 
+      - name: Build tesseract4android from source (match F-Droid for reproducibility)
+        working-directory: apps/app_seeds
+        run: |
+          set -eu
+          # F-Droid forbids the prebuilt AAR that ships in flutter_tesseract_ocr, so
+          # its recipe rebuilds tesseract4android@4.9.0 from source and swaps the AAR
+          # into the pub cache. We do the SAME here so our published reference APK is
+          # byte-for-byte reproducible against F-Droid's build (keeps AllowedAPKSigningKeys
+          # + binary: valid — see metadata/org.comunes.tane.yml in fdroiddata).
+          t4a="$GITHUB_WORKSPACE/tesseract4android-src"
+          git clone --depth 1 -b 4.9.0 https://github.com/adaptech-cz/Tesseract4Android.git "$t4a"
+          # Install the exact NDK the project pins, if the image lacks it.
+          ndkv=$(grep -RhoE 'ndkVersion[^0-9]*[0-9][0-9.]+' "$t4a" | grep -oE '[0-9]+\.[0-9.]+' | head -1 || true)
+          [ -n "${ndkv:-}" ] && (yes | sdkmanager "ndk;$ndkv" >/dev/null 2>&1 || true)
+          ( cd "$t4a/tesseract4android" && ./gradlew --no-daemon assembleStandardRelease )
+          aar_dst=$(find ${PUB_CACHE:+$PUB_CACHE} "$HOME/.pub-cache" /root/.pub-cache /sdks 2>/dev/null \
+            -path '*flutter_tesseract_ocr-0.4.31/android/libs/tesseract4android-release.aar' | head -1)
+          cp "$t4a/tesseract4android/build/outputs/aar/tesseract4android-standard-release.aar" "$aar_dst"
+          echo "swapped source-built tesseract AAR -> $aar_dst"
+
       - name: Build signed AAB + per-ABI APKs
         working-directory: apps/app_seeds
         run: |