Feat v0.5.0 realtime primitive + dialog audit + permissions UI

Add realtime pub/sub: Starlark realtime.publish() module gated by
new realtime.publish permission, WS room protocol (room.subscribe/
room.unsubscribe intercepted in readPump with 100-room cap), and
SDK sw.realtime.subscribe() with auto room join/leave and reconnect
recovery.

Migrate 5 bare confirm() calls to sw.confirm() with destructive
styling in tasks, schedules, notes (×2), and editor packages.

Add admin permissions UI: per-permission grant/revoke drawer,
Grant All bulk action, pending_review/suspended status badges,
disabled enable toggle when pending. Closes v0.4.7 permissions
UI gap.

8 new Go tests, all passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -59,10 +59,12 @@ deployment and customization.
 
 ## Project Status
 
-**v0.3.8** — Distribution. Bundled packages auto-install on first boot,
-builder image for faster custom builds, per-environment package allowlists.
-See [ROADMAP.md](ROADMAP.md) for the full journey from v0.1.0 kernel
-extraction through v0.3.x workflows to the upcoming v0.4.0 Notes surface.
+**v0.5.0** — Realtime pub/sub primitive, dialog audit, and admin permissions
+UI. Extensions can now publish events to WebSocket channels via Starlark;
+clients subscribe with `sw.realtime.subscribe()`. Admin Packages page gains
+per-permission grant/revoke controls and status badges. See
+[ROADMAP.md](ROADMAP.md) for the full journey from v0.1.0 kernel extraction
+through v0.3.x workflows, v0.4.x Notes surface, to v0.5.x realtime and chat.
 
 ## License