Fix workflow path filters for repository root structure

.gitea/workflows/build.yml

@@ -62,7 +62,6 @@ jobs:
           pack config default-builder paketobuildpacks/builder-jammy-tiny:latest
 
       - name: Prepare build environment
-        working-directory: backend
         run: |
           # Create .env.production for build (no secrets, just structure)
           cat > .env.production << EOF
@@ -77,15 +76,15 @@ jobs:
         run: |
           PACK_ARGS=(
             "${IMAGE_NAME}:${IMAGE_TAG}"
-            --path backend
+            --path .
           )
           
           if [ -n "$PACK_DOCKER_HOST" ]; then
             PACK_ARGS+=(--docker-host "$PACK_DOCKER_HOST")
           fi
           
-          if [ -f "backend/.env.production" ]; then
-            PACK_ARGS+=(--env-file backend/.env.production)
+          if [ -f ".env.production" ]; then
+            PACK_ARGS+=(--env-file .env.production)
           fi
           
           pack build "${PACK_ARGS[@]}"