refactor(web): delete dead code (R2) — 1736 lines removed

Tool-renderer registry (21 files, ~1.5k lines):
- src/lib/tool-renderers.ts — registry + getToolRenderer (exported, never
  imported anywhere)
- src/lib/renderers/index.ts + 10 .ts registrars + 10 .svelte components
- main.ts: removed the requestAnimationFrame(() => import('./lib/renderers'))
  that was the only thing keeping the dead subsystem alive

Dead components (never imported):
- ToolCallGroup, PlanProgress, GoalHeader, InlineApproval, SessionDigest

Dead store exports (written, never read):
- context.ts: pendingApprovals writable (+ Approval type import)
- events.ts: connectionState writable (+ its .set() calls)

Dead API surface:
- api.ts: SessionDigest interface + fetchSessionDigest (only caller was the
  dead SessionDigest.svelte)

Dead npm deps:
- mode-watcher (0 imports; superseded by stores/theme.svelte.ts)
- @internationalized/date (0 imports)

Also: fix stale comments referencing deleted symbols, update plan R1/R2
status. Build clean (4683 modules, down from 4706; one Svelte 5 warning
gone — the dead HealthSummary.svelte was emitting state_referenced_locally).

web/src/lib/stores/activity.ts

@@ -161,7 +161,7 @@ export const activityLog = derived([messages, planSteps, currentTask], ([$msgs,
   // which caused the AgentIndicator to latch onto a stale "Approval: ..."
   // entry and never clear — even after the session completed. Approvals
   // are tracked via the REST /approvals endpoint (context.ts, Ops.svelte)
-  // and rendered as InlineApproval cards in the chat (or Ops page), not
+  // and rendered as inline approval cards in the chat (or Ops page), not
   // in the activity log.
 
   // Sort oldest first

web/src/lib/stores/context.ts

@@ -1,5 +1,5 @@
 import { writable, get } from 'svelte/store'
-import { fetchDashboardSummary, fetchApprovals, type DashboardSummary, type Approval } from '$lib/api'
+import { fetchDashboardSummary, fetchApprovals, type DashboardSummary } from '$lib/api'
 import { liveEvents, subscribeEvents, type OikosEvent } from './events'
 
 // Shared operational context: dashboard summary + pending approvals,
@@ -7,7 +7,6 @@ import { liveEvents, subscribeEvents, type OikosEvent } from './events'
 // so the poll only runs while something on screen displays it.
 
 export const summary = writable<DashboardSummary | null>(null)
-export const pendingApprovals = writable<Approval[]>([])
 
 let refs = 0
 let pollTimer: ReturnType<typeof setInterval> | null = null
@@ -16,9 +15,8 @@ let unsubscribeStore: (() => void) | null = null
 let lastSeenEventId = 0
 
 export async function refreshContext() {
-  const [s, approvals] = await Promise.all([fetchDashboardSummary(), fetchApprovals('pending')])
+  const [s] = await Promise.all([fetchDashboardSummary(), fetchApprovals('pending')])
   if (s) summary.set(s)
-  pendingApprovals.set(approvals)
 }
 
 function onEvent(ev: OikosEvent) {

web/src/lib/stores/events.ts

@@ -15,20 +15,16 @@ export interface OikosEvent {
 const MAX_BUFFERED = 200
 
 export const liveEvents = writable<OikosEvent[]>([])
-export const connectionState = writable<'connecting' | 'open' | 'closed'>('connecting')
 
 let source: EventSource | null = null
 let subscriberCount = 0
 
 async function connect() {
   if (source) return
-  connectionState.set('connecting')
   // The browser's EventSource sends Last-event-ID automatically on reconnect.
   // sseUrl is async so the OIDC access token is refreshed if expired.
   source = new EventSource(await sseUrl('/api/v1/events/stream'))
 
-  source.onopen = () => connectionState.set('open')
-
   source.onmessage = (ev) => {
     try {
       const parsed: OikosEvent = JSON.parse(ev.data)
@@ -39,7 +35,7 @@ async function connect() {
   }
 
   source.onerror = () => {
-    connectionState.set('closed')
+    // browser will auto-reconnect; nothing to surface here
   }
 }
 

web/src/lib/stores/workspace.ts

@@ -83,7 +83,7 @@ function applyEvent(ev: { type: string; correlation_id?: string | null; data?: u
   const data = (ev.data ?? {}) as any
 
   // Task fields (status/goal/outcome) live on the session row — refetch the
-  // (cheap) session list so GoalHeader picks up the change without a
+  // (cheap) session list so the UI picks up the change without a
   // dedicated endpoint. Every event that can change agent_sessions.status
   // (goal.set → planning, propose_plan → executing, ask_operator →
   // awaiting_input, answerQuestion → executing, complete_task → done/failed)
@@ -138,8 +138,7 @@ function applyEvent(ev: { type: string; correlation_id?: string | null; data?: u
       }
       break
     case 'knowledge.recorded':
-      // No dedicated store yet — the outcome/knowledge card reads this task's
-      // digest (fetchSessionDigest) on completion, which already lists it.
+      // No dedicated store — knowledge cards refetch on completion signal.
       break
   }
 }