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/components/IdentityChangeProposal.tsx

@@ -27,7 +27,7 @@ import {
   type IdentityChangeProposal as Proposal,
   type IdentitySnapshot,
 } from '../lib/intelligence-client';
-import { useChatStore } from '../store/chatStore';
+import { useConversationStore } from '../store/chat/conversationStore';
 import { Button, Badge } from './ui';
 
 // === Error Parsing Utility ===
@@ -306,7 +306,7 @@ function HistoryItem({
 // === Main Component ===
 
 export function IdentityChangeProposalPanel() {
-  const { currentAgent } = useChatStore();
+  const currentAgent = useConversationStore((s) => s.currentAgent);
   const [proposals, setProposals] = useState<Proposal[]>([]);
   const [snapshots, setSnapshots] = useState<IdentitySnapshot[]>([]);
   const [loading, setLoading] = useState(true);