👷 ci(build): enhance sonar project key configuration

- add SONAR_PROJECT_KEY environment variable for flexibility
- fallback to default or file-based project key if not set

.forgejo/workflows/build.yml

@@ -32,8 +32,13 @@ jobs:
         env:
           SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+          SONAR_PROJECT_KEY: ${{ secrets.SONAR_PROJECT_KEY }}
         run: |
-          PROJECT_KEY=$(grep -E '^sonar.projectKey=' sonar-project.properties | cut -d= -f2 | tr -d '\r')
+          PROJECT_KEY="${SONAR_PROJECT_KEY}"
+          if [ -z "$PROJECT_KEY" ] && [ -f sonar-project.properties ]; then
+            PROJECT_KEY=$(grep -E '^sonar.projectKey=' sonar-project.properties | cut -d= -f2 | tr -d '\r')
+          fi
+          PROJECT_KEY=${PROJECT_KEY:-free-games-claimer}
           docker run --rm \
             -e SONAR_HOST_URL="$SONAR_HOST_URL" \
             -e SONAR_TOKEN="$SONAR_TOKEN" \