feat(intelligence): complete migration to Rust backend

- Unify all intelligence modules to use intelligenceClient
- Delete legacy TS implementations (agent-memory, reflection-engine, heartbeat-engine, context-compactor, agent-identity, memory-index)
- Update all consumers to use snake_case backend types
- Remove deprecated llm-integration.test.ts

This eliminates code duplication between frontend and backend, resolves
localStorage limitations, and enables persistent intelligence features.

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

desktop/src/lib/memory-extractor.ts

@@ -15,8 +15,10 @@
  * Reference: ZCLAW_AGENT_INTELLIGENCE_EVOLUTION.md §6.2.2
  */
 
-import { getMemoryManager, type MemoryType } from './agent-memory';
-import { getAgentIdentityManager } from './agent-identity';
+import {
+  intelligenceClient,
+  type MemoryType,
+} from './intelligence-client';
 import {
   getLLMAdapter,
   llmExtract,
@@ -159,20 +161,19 @@ export class MemoryExtractor {
     console.log(`[MemoryExtractor] After importance filtering (>= ${this.config.minImportanceThreshold}): ${extracted.length} items`);
 
     // Save to memory
-    const memoryManager = getMemoryManager();
     let saved = 0;
     let skipped = 0;
 
     for (const item of extracted) {
       try {
-        await memoryManager.save({
-          agentId,
+        await intelligenceClient.memory.store({
+          agent_id: agentId,
+          memory_type: item.type,
           content: item.content,
-          type: item.type,
           importance: item.importance,
           source: 'auto',
           tags: item.tags,
-          conversationId,
+          conversation_id: conversationId,
         });
         saved++;
       } catch {
@@ -185,9 +186,8 @@ export class MemoryExtractor {
     const preferences = extracted.filter(e => e.type === 'preference' && e.importance >= 5);
     if (preferences.length > 0) {
       try {
-        const identityManager = getAgentIdentityManager();
         const prefSummary = preferences.map(p => `- ${p.content}`).join('\n');
-        identityManager.appendToUserProfile(agentId, `### 自动发现的偏好 (${new Date().toLocaleDateString('zh-CN')})\n${prefSummary}`);
+        await intelligenceClient.identity.appendUserProfile(agentId, `### 自动发现的偏好 (${new Date().toLocaleDateString('zh-CN')})\n${prefSummary}`);
         userProfileUpdated = true;
       } catch (err) {
         console.warn('[MemoryExtractor] Failed to update USER.md:', err);