chore(release): trust Flutter SDK directories in workflow to fix safe directory errors

.gitea/workflows/release.yaml

@@ -46,6 +46,18 @@ jobs:
         with:
           channel: 'stable'
 
+      - name: Trust Flutter SDK git directory
+        run: |
+          set -e
+          FLUTTER_BIN_DIR="$(dirname "$(command -v flutter)")"
+          FLUTTER_SDK_DIR="$(cd "$FLUTTER_BIN_DIR/.." && pwd -P)"
+          git config --global --add safe.directory "$FLUTTER_SDK_DIR"
+          if [ -n "${FLUTTER_ROOT:-}" ]; then
+            git config --global --add safe.directory "$FLUTTER_ROOT"
+          fi
+          # Runner-specific fallback observed in failing logs
+          git config --global --add safe.directory /opt/hostedtoolcache/flutter/stable-3.41.4-x64 || true
+
       - name: Install dependencies
         run: flutter pub get