docs: verify Cline file hook contract

AGENTS.md

@@ -27,6 +27,7 @@ This repository publishes the open-source server, console, integration catalog,
 - Write Grok Build integrations to a native user hook file under non-empty `GROK_HOME` or `~/.grok`; keep Claude Code and Cursor compatibility sources read-only.
 - Write Auggie hooks only to `~/.augment/settings.json`; keep system and workspace settings read-only. Generate `.cmd` wrappers on Windows and `.sh` wrappers on Unix because Auggie dispatches supported script paths, and express hook timeouts in milliseconds.
 - Validate Auggie matcher syntax during installation with Node.js `new RegExp`; keep status and uninstall independent from the JavaScript validator so recovery remains available offline.
+- Write Cline file hooks to `$CLINE_DIR/hooks` with `~/.cline/hooks` as the default; keep Documents and workspace hook roots read-only. Use supported event filenames and return JSON stdout with `cancel: true` for blocking. Treat hook errors, timeouts, and invalid control JSON as fail-open.
 
 ## Mirror Workflow