own the open-in-clide command family (T-413)

/permissions, /status, /config, /mcp, /agents, /hooks, /memory, and
/help move from the TUI-only notice catalog to clide-owned commands
with real behavior:

- /permissions <mode> sets the mode over set_permission_mode; bare
  /permissions opens a picker in the interaction zone — the same card
  /model and /effort use (kPermissionModes, bypass last and explicit
  per T-181).
- /status → Claude sidebar Activity tab; /config, /mcp, /agents,
  /hooks → Config tab. The pane activates the claude.meta sidebar tab
  and publishes a meta.tab message; the sidebar subscribes and switches
  its sub-tab — the same MessageBus addressing `clide ui open` uses
  (D-6), so the CLI can drive it too.
- /memory opens the workspace CLAUDE.md via editor.open.
- /help renders a local summary card (clide-owned + advertised
  commands) — the CLI's TUI help doesn't exist headless.

The catalog keeps empty-hint entries for these tokens as safety nets if
they're ever removed from owned.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -18,6 +18,10 @@ heading, and (b) bumping `pubspec.yaml` `version:` in the same commit.
 
 ### Added
 
+- **The TUI command family opens clide surfaces.** `/permissions` sets the mode
+  directly or opens a picker; `/status`, `/config`, `/mcp`, `/agents`, `/hooks`
+  jump to the matching Claude sidebar tab; `/memory` opens CLAUDE.md in the
+  editor; `/help` shows clide's own command summary. (T-413)
 - **`/effort` works in the Claude pane.** With a level (`/effort xhigh`) the
   session restarts in place carrying `--effort` — resume keeps the
   conversation; bare `/effort` opens a picker with the five levels and the