fix(desktop): component cleanup + dead code removal + DeerFlow ai-elements

- ChatArea: DeerFlow ai-elements annotations for accessibility
- Conversation: remove unused Context, simplify message rendering
- Delete dead modules: audit-logger.ts, gateway-reconnect.ts
- Replace console.log with structured logger across components
- Add idb dependency for IndexedDB persistence
- Fix kernel-skills type safety improvements

desktop/src/lib/kernel-skills.ts

@@ -6,6 +6,7 @@
 
 import { invoke } from '@tauri-apps/api/core';
 import type { KernelClient } from './kernel-client';
+import { useConversationStore } from '../store/chat/conversationStore';
 
 /** Skill shape returned by list/refresh/create/update operations. */
 type SkillItem = {
@@ -107,12 +108,16 @@ export function installSkillMethods(ClientClass: { prototype: KernelClient }): v
     error?: string;
     durationMs?: number;
   }> {
+    const convStore = useConversationStore.getState();
+    const agent = convStore.currentAgent;
+    const sessionKey = convStore.sessionKey;
+
     return invoke('skill_execute', {
       id,
       context: {
-        agentId: '',
-        sessionId: '',
-        workingDir: '',
+        agentId: agent?.id || 'zclaw-main',
+        sessionId: sessionKey || crypto.randomUUID(),
+        workingDir: null,
       },
       input: input || {},
     });