Marketplace listing fix: shortened the GitHub Action description to under 125 chars so Ventrova/sentinel-scan-cli can be published to the GitHub Marketplace. No change to the scanner or action behavior; same 15-attack corpus + MCP manifest heuristics as v1.4.1. Install: npx sentinel-scan-cli / pip install sentinel-scan-cli / uses: Ventrova/sentinel-scan-cli@v1.4.2.