Add Forgejo Release creation on version tag push

Tag pushes (v*) now build the APK and create a Forgejo Release with
the APK attached as a downloadable asset, in addition to uploading the
workflow artifact. Requires RELEASE_TOKEN secret (write:repository scope).
To release: git tag v26.03.09 && git push origin v26.03.09

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.forgejo/workflows/build.yml

@@ -1,8 +1,19 @@
+# Runs on pushes to main and on version tags (v*).
+#
+# Branch push (main):  builds APK, uploads as workflow artifact (30 day retention)
+# Tag push (v26.03.09): builds APK, creates a Forgejo Release with APK attached
+#
+# To cut a release:
+#   git tag v26.03.09 && git push origin v26.03.09
+#
+# Required secrets (repo → Settings → Secrets → Actions):
+#   RELEASE_TOKEN  — Forgejo PAT with write:repository scope
 name: Build APK
 
 on:
   push:
     branches: [main]
+    tags: ["v*"]
     paths:
       - "lib/**"
       - "pubspec.yaml"
@@ -26,9 +37,41 @@ jobs:
       - name: Build release APK
         run: flutter build apk --release
 
-      - name: Upload APK
+      - name: Upload artifact
         uses: actions/upload-artifact@v4
         with:
           name: fabledapp-${{ github.sha }}
           path: build/app/outputs/flutter-apk/app-release.apk
           retention-days: 30
+
+      - name: Create Forgejo release
+        if: startsWith(github.ref, 'refs/tags/')
+        env:
+          RELEASE_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+          TAG: ${{ github.ref_name }}
+        run: |
+          echo "Creating release $TAG..."
+
+          RESPONSE=$(curl -s -X POST \
+            "https://git.fabledsword.com/api/v1/repos/bvandeusen/FabledApp/releases" \
+            -H "Authorization: token $RELEASE_TOKEN" \
+            -H "Content-Type: application/json" \
+            -d "{\"tag_name\": \"$TAG\", \"name\": \"$TAG\", \"body\": \"\"}")
+
+          RELEASE_ID=$(echo "$RESPONSE" | grep -oE '"id":[[:space:]]*[0-9]+' | head -1 | grep -oE '[0-9]+')
+
+          if [ -z "$RELEASE_ID" ]; then
+            echo "Failed to create release. API response:"
+            echo "$RESPONSE"
+            exit 1
+          fi
+
+          echo "Release created with ID $RELEASE_ID, uploading APK..."
+
+          curl -s -X POST \
+            "https://git.fabledsword.com/api/v1/repos/bvandeusen/FabledApp/releases/$RELEASE_ID/assets" \
+            -H "Authorization: token $RELEASE_TOKEN" \
+            -F "attachment=@build/app/outputs/flutter-apk/app-release.apk"
+
+          echo "Done — release $TAG is live at:"
+          echo "https://git.fabledsword.com/bvandeusen/FabledApp/releases/tag/$TAG"