feat: implement tier 1 quick wins (tool groups, typing, pruning, verbose, think)

Five additive features with no breaking changes:

- Tool groups: group:fs, group:runtime, group:web, group:memory syntactic
  sugar for allow/deny lists in tool policy config
- Typing indicators: Discord sendTyping() and WhatsApp sendStateTyping()
  on message receipt for better UX feedback
- Session pruning: TTL-based auto-cleanup via sessions.ttl config with
  hourly daemon timer and SQLite GROUP BY pruning
- /verbose command: TUI command parser toggle for raw streaming display
- !!think prefix: per-message extended thinking mode wired through
  Anthropic (budget_tokens), OpenAI/GitHub (reasoning_effort), and
  Gemini (thinkingConfig) providers

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/daemon/index.ts

@@ -7,7 +7,7 @@ import { AnthropicClient, OpenAIClient, OllamaClient, LlamaCppClient, GeminiClie
 import type { ModelClient, RetryConfig, ModelTier } from '../models/index.js';
 import { AgentOrchestrator, type DelegationConfig } from '../backends/index.js';
 import { OutboundAttachmentCollector } from '../backends/native/attachments.js';
-import { SessionStore, SessionManager } from '../session/index.js';
+import { SessionStore, SessionManager, parseDuration } from '../session/index.js';
 import { HookEngine } from '../hooks/index.js';
 import { ToolRegistry, ToolExecutor, ToolPolicy, allBuiltinTools, createWebSearchTools, createProcessTools, ProcessManager, BrowserManager, createBrowserTools, createMediaSendTool, createSessionTools, createAgentsListTool, createMessageSendTool, createCronTools } from '../tools/index.js';
 import type { Tool } from '../tools/types.js';
@@ -453,6 +453,23 @@ export async function startDaemon(config: Config): Promise<DaemonContext> {
     console.log('Session store closed');
   });
 
+  // Session pruning timer (TTL-based cleanup)
+  const ttlMs = parseDuration(config.sessions?.ttl ?? '30d');
+  if (ttlMs) {
+    const pruneInterval = setInterval(() => {
+      const cutoff = Math.floor((Date.now() - ttlMs) / 1000); // created_at is unix seconds
+      const pruned = sessionStore.pruneStale(cutoff);
+      if (pruned.length > 0) {
+        sessionManager.evictSessions(pruned);
+        console.log(`Pruned ${pruned.length} stale session(s) (TTL: ${config.sessions?.ttl ?? '30d'})`);
+      }
+    }, 3_600_000); // every hour
+
+    lifecycle.onShutdown(async () => {
+      clearInterval(pruneInterval);
+    });
+  }
+
   // Initialize hook engine
   const hookEngine = new HookEngine(config.hooks);