feat: add native Factory Droid hook integration

AGENTS.md

@@ -27,6 +27,8 @@ This repository owns the public Go SDK, the `cmd/elydora` CLI, local signing beh
 - Keep Grok Build writes inside its native global `$GROK_HOME/hooks/*.json` contract. Treat Claude Code and Cursor compatibility files plus project `.grok/hooks` as read-only integration sources.
 - Write Auggie hooks only to `~/.augment/settings.json`; keep system and workspace settings read-only. Generate `.cmd` wrappers on Windows and `.sh` wrappers on Unix because Auggie dispatches supported script paths, and express hook timeouts in milliseconds.
 - Write Cline hooks only to `$CLINE_DIR/hooks` with `~/.cline/hooks` as the default; keep Documents and workspace hook roots read-only. Preserve official input byte-for-byte and translate guard exit code `2` into Cline's JSON stdout cancellation control.
+- Factory Droid `droid@0.175.0` reads direct event maps from `~/.factory/hooks.json` or the legacy `~/.factory/hooks/hooks.json`; `~/.factory/settings.json` stores the same map under `hooks`. Select the active source per event, preserve JSONC syntax, and direct users to `/hooks` for review.
+- Commit Factory Droid runtime config, private key, audit runtime, and affected hook documents in one rollback-capable transaction. Status requires an enabled `PreToolUse`/`PostToolUse` pair with matching managed runtime files.
 
 ## Code Quality