feat: Show detailing status in initiative overview and phase sidebar

Add 'detailing' activity state derived from active detail agents
(mode=detail, status running/waiting_for_input). Initiative cards show
pulsing "Detailing" indicator. Phase sidebar items show spinner during
active detailing and "Review changes" when the agent finishes.

docs/frontend.md

@@ -180,4 +180,4 @@ Configured in `src/lib/trpc.ts`. Uses `@trpc/react-query` with TanStack Query fo
 
 `listInitiatives` returns an `activity` field on each initiative, computed server-side from phase statuses via `deriveInitiativeActivity()` in `apps/server/trpc/routers/initiative-activity.ts`. This eliminates per-card N+1 `listPhases` queries.
 
-Activity states (priority order): `pending_review` > `executing` > `blocked` > `complete` > `ready` > `planning` > `idle` > `archived`. Each state maps to a `StatusVariant` + pulse animation in `InitiativeCard`'s `activityVisual()` function.
+Activity states (priority order): `pending_review` > `executing` > `blocked` > `complete` > `ready` > `detailing` > `planning` > `idle` > `archived`. Each state maps to a `StatusVariant` + pulse animation in `InitiativeCard`'s `activityVisual()` function. The `detailing` state is derived from active detail agents (mode='detail', status running/waiting_for_input) and shows a pulsing indigo dot. `PhaseSidebarItem` also shows a spinner when a detail agent is active for its phase.

docs/server-api.md

@@ -111,6 +111,7 @@ Each procedure uses `require*Repository(ctx)` helpers that throw `TRPCError(INTE
 | Procedure | Type | Description |
 |-----------|------|-------------|
 | queuePhase | mutation | Queue approved phase |
+| queueAllPhases | mutation | Queue all approved phases for initiative |
 | dispatchNextPhase | mutation | Start next ready phase |
 | getPhaseQueueState | query | Queue state |
 | createChildTasks | mutation | Create tasks from detail parent |