- Rewrite scripts/gitea_webhook_handler.py as HTTP server with HMAC-SHA256 auth - Add config/webhook.yaml defining allowed repos/events/branches/actions - Implement dispatch_push calling ansible/scripts/deploy_on_webhook.sh safely - SQLite logging table with delivery_id dedup for replay safety - Add tests/test_gitea_webhook_handler.py covering push/PR/signature/idempotency - Add docs/webhook-deployment.md with security model, ops, and #288 alignment Closes #436