chore: CLI v2.1.75–v2.1.80 audit and support (#223–#232) (#233)

## Summary

This PR implements all tickets filed from the CLI v2.1.74 → v2.1.80 changelog audit (issues #223–#232).

### Changes by Issue

- **#223** — `feat: handle Elicitation and ElicitationResult hook events`
  New `ElicitationModal.svelte` component, Rust parsing for `[Elicitation Hook]` and `[ElicitationResult Hook]`, new store methods, and TypeScript event types.

- **#224** — `feat: handle StopFailure hook event for API error turns`
  Rust parsing for `[StopFailure Hook]`; frontend shows error toast + error character state.

- **#225** — `feat: handle PostCompact hook event`
  Rust parsing for `[PostCompact Hook]`; frontend shows info toast + success character state.

- **#226** — `feat: expose --name CLI flag as session name at startup`
  Added `session_name` field to `ClaudeStartOptions`; `StatusBar.doConnect()` passes the conversation name.

- **#227** — `fix: tighten startup watchdog and correct misleading comment`
  Startup watchdog tightened from 60 s → 30 s; corrected a comment that said "5 minutes" whilst the code used 60 seconds.

- **#228** — `fix: document cost estimation review and update default model fallback`
  Default model fallback updated from `claude-sonnet-4-5-20250929` → `claude-sonnet-4-6`; added doc comment explaining why char-based estimation is unaffected by v2.1.75 token overcounting fix.

- **#229** — `chore: update supported CLI version constant to 2.1.80`
  `SUPPORTED_CLI_VERSION` bumped in `CliVersion.svelte`.

- **#230** — `feat: surface memory file last-modified timestamps in MemoryBrowserPanel`
  Backend populates `last_modified` Unix timestamp; frontend formats and displays it per file.

- **#231** — `feat: update max_output_tokens upper bound and helper text for 128k`
  Input max raised to 128 000; placeholder and helper text updated to reflect model-dependent defaults and 128 k ceiling for Opus/Sonnet 4.6.

- **#232** — `fix: document non-streaming fallback compatibility with mid-session watchdog`
  Added doc comment above `STUCK_TIMEOUT` explaining the 5-minute watchdog is intentionally larger than the CLI's 2-minute non-streaming API fallback.

---

✨ This PR was created with help from Hikari~ 🌸

Reviewed-on: #233
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

src/lib/stores/claude.ts

@@ -22,6 +22,7 @@ export const claudeStore = {
   terminalLines: conversationsStore.terminalLines,
   pendingPermission: conversationsStore.pendingPermission,
   pendingQuestion: conversationsStore.pendingQuestion,
+  pendingElicitation: conversationsStore.pendingElicitation,
   isProcessing: conversationsStore.isProcessing,
   grantedTools: conversationsStore.grantedTools,
   pendingRetryMessage: conversationsStore.pendingRetryMessage,
@@ -57,6 +58,10 @@ export const claudeStore = {
   clearQuestion: conversationsStore.clearQuestion,
   requestQuestionForConversation: conversationsStore.requestQuestionForConversation,
   clearQuestionForConversation: conversationsStore.clearQuestionForConversation,
+  requestElicitation: conversationsStore.requestElicitation,
+  clearElicitation: conversationsStore.clearElicitation,
+  requestElicitationForConversation: conversationsStore.requestElicitationForConversation,
+  clearElicitationForConversation: conversationsStore.clearElicitationForConversation,
   grantTool: conversationsStore.grantTool,
   revokeAllTools: conversationsStore.revokeAllTools,
   isToolGranted: conversationsStore.isToolGranted,
@@ -126,6 +131,12 @@ export const hasQuestionPending = derived(
   ($conversation) => $conversation?.pendingQuestion !== null
 );
 
+export const hasElicitationPending = derived(
+  claudeStore.activeConversation,
+  ($conversation) =>
+    $conversation?.pendingElicitation !== null && $conversation?.pendingElicitation !== undefined
+);
+
 // Derived store to check if Claude is currently processing (can be interrupted)
 export const isClaudeProcessing = derived(
   [claudeStore.connectionStatus, characterState],