feat(FN-3046): add fn binary panel and standalone CLI entrypoint

This merge introduces a standalone CLI binary mode ("droid") with a new dashboard panel for binary management, adds a todo planning entrypoint with peer exchange shutdown, and includes documentation updates for the CLI reference and standalone deployment. Key additions span the core database layer,

Fusion-Task-Id: FN-3046

docs/cli-reference.md

@@ -238,6 +238,15 @@ To revoke/reset access, choose the behavior you want:
 - **Persistent reset:** clear `daemonToken` from `~/.fusion/settings.json` (or rotate it via `fn daemon --token-only`/token rotation workflow), then restart dashboard.
 - **Client logout:** clear `fn.authToken` in browser localStorage so clients must re-authenticate with the current server token.
 
+### Optional provider: Factory AI via Droid CLI
+
+When the published CLI bundle includes the vendored `@fusion/droid-cli` extension, users can enable **Factory AI — via Droid CLI** in **Settings → Authentication**.
+
+Requirements:
+- `droid` binary installed and available on `PATH`
+- successful local login (`droid auth login`)
+- Fusion restart after toggling the provider on (to reload extensions)
+
 ---
 
 ## `fn serve`