diff --git a/desktop/src/lib/__tests__/llm-integration.test.ts b/desktop/src/lib/__tests__/llm-integration.test.ts
new file mode 100644
index 0000000..81015ba
--- /dev/null
+++ b/desktop/src/lib/__tests__/llm-integration.test.ts
@@ -0,0 +1,228 @@
+/**
+ * LLM Integration Tests - Phase 2 Engine Upgrades
+ *
+ * Tests for LLM-powered features:
+ * - ReflectionEngine with LLM semantic analysis
+ * - ContextCompactor with LLM summarization
+ * - MemoryExtractor with LLM importance scoring
+ */
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import {
+  ReflectionEngine,
+  DEFAULT_REFLECTION_CONFIG,
+  type ReflectionConfig,
+} from '../reflection-engine';
+import {
+  ContextCompactor,
+  DEFAULT_COMPACTION_CONFIG,
+  type CompactionConfig,
+} from '../context-compactor';
+import {
+  MemoryExtractor,
+  DEFAULT_EXTRACTION_CONFIG,
+  type ExtractionConfig,
+} from '../memory-extractor';
+import {
+  getLLMAdapter,
+  resetLLMAdapter,
+  type LLMProvider,
+} from '../llm-service';
+
+// === Mock LLM Adapter ===
+
+const mockLLMAdapter = {
+  complete: vi.fn(),
+  isAvailable: vi.fn(() => true),
+  getProvider: vi.fn(() => 'mock' as LLMProvider),
+};
+
+vi.mock('../llm-service', () => ({
+  getLLMAdapter: vi.fn(() => mockLLMAdapter),
+  resetLLMAdapter: vi.fn(),
+  llmReflect: vi.fn(async () => JSON.stringify({
+    patterns: [
+      {
+        observation: '用户经常询问代码优化问题',
+        frequency: 5,
+        sentiment: 'positive',
+        evidence: ['多次讨论性能优化'],
+      },
+    ],
+    improvements: [
+      {
+        area: '代码解释',
+        suggestion: '可以提供更详细的代码注释',
+        priority: 'medium',
+      },
+    ],
+    identityProposals: [],
+  })),
+  llmCompact: vi.fn(async () => '[LLM摘要]\n讨论主题: 代码优化\n关键决策: 使用缓存策略\n待办事项: 完成性能测试'),
+  llmExtract: vi.fn(async () => JSON.stringify([
+    { content: '用户偏好简洁的回答', type: 'preference', importance: 7, tags: ['style'] },
+    { content: '项目使用 TypeScript', type: 'fact', importance: 6, tags: ['tech'] },
+  ])),
+}));
+
+// === ReflectionEngine Tests ===
+
+describe('ReflectionEngine with LLM', () => {
+  let engine: ReflectionEngine;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    engine = new ReflectionEngine({ useLLM: true });
+  });
+
+  afterEach(() => {
+    engine?.updateConfig({ useLLM: false });
+  });
+
+  it('should initialize with LLM config', () => {
+    const config = engine.getConfig();
+    expect(config.useLLM).toBe(true);
+  });
+
+  it('should have llmFallbackToRules enabled by default', () => {
+    const config = engine.getConfig();
+    expect(config.llmFallbackToRules).toBe(true);
+  });
+
+  it('should track conversations for reflection trigger', () => {
+    engine.recordConversation();
+    engine.recordConversation();
+    expect(engine.shouldReflect()).toBe(false);
+
+    // After 5 conversations (default trigger)
+    for (let i = 0; i < 4; i++) {
+      engine.recordConversation();
+    }
+    expect(engine.shouldReflect()).toBe(true);
+  });
+
+  it('should use LLM when enabled and available', async () => {
+    mockLLMAdapter.isAvailable.mockReturnValue(true);
+
+    const result = await engine.reflect('test-agent', { forceLLM: true });
+
+    expect(result.patterns.length).toBeGreaterThan(0);
+    expect(result.timestamp).toBeDefined();
+  });
+
+  it('should fallback to rules when LLM fails', async () => {
+    mockLLMAdapter.isAvailable.mockReturnValue(false);
+
+    const result = await engine.reflect('test-agent');
+
+    // Should still work with rule-based approach
+    expect(result).toBeDefined();
+    expect(result.timestamp).toBeDefined();
+  });
+});
+
+// === ContextCompactor Tests ===
+
+describe('ContextCompactor with LLM', () => {
+  let compactor: ContextCompactor;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    compactor = new ContextCompactor({ useLLM: true });
+  });
+
+  it('should initialize with LLM config', () => {
+    const config = compactor.getConfig();
+    expect(config.useLLM).toBe(true);
+  });
+
+  it('should have llmFallbackToRules enabled by default', () => {
+    const config = compactor.getConfig();
+    expect(config.llmFallbackToRules).toBe(true);
+  });
+
+  it('should check threshold correctly', () => {
+    const messages = [
+      { role: 'user', content: 'Hello'.repeat(1000) },
+      { role: 'assistant', content: 'Response'.repeat(1000) },
+    ];
+
+    const check = compactor.checkThreshold(messages);
+    expect(check.shouldCompact).toBe(false);
+    expect(check.urgency).toBe('none');
+  });
+
+  it('should trigger soft threshold', () => {
+    // Create enough messages to exceed 15000 soft threshold but not 20000 hard threshold
+    // estimateTokens: CJK chars ~1.5 tokens each
+    // 20 messages × 600 CJK chars × 1.5 = ~18000 tokens (between soft and hard)
+    const messages = Array(20).fill(null).map((_, i) => ({
+      role: i % 2 === 0 ? 'user' : 'assistant',
+      content: '测试内容'.repeat(150), // 600 CJK chars ≈ 900 tokens each
+    }));
+
+    const check = compactor.checkThreshold(messages);
+    expect(check.shouldCompact).toBe(true);
+    expect(check.urgency).toBe('soft');
+  });
+});
+
+// === MemoryExtractor Tests ===
+
+describe('MemoryExtractor with LLM', () => {
+  let extractor: MemoryExtractor;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    extractor = new MemoryExtractor({ useLLM: true });
+  });
+
+  it('should initialize with LLM config', () => {
+    // MemoryExtractor doesn't expose config directly, but we can test behavior
+    expect(extractor).toBeDefined();
+  });
+
+  it('should skip extraction with too few messages', async () => {
+    const messages = [
+      { role: 'user', content: 'Hi' },
+      { role: 'assistant', content: 'Hello!' },
+    ];
+
+    const result = await extractor.extractFromConversation(messages, 'test-agent');
+    expect(result.saved).toBe(0);
+  });
+
+  it('should extract with enough messages', async () => {
+    const messages = [
+      { role: 'user', content: '我喜欢简洁的回答' },
+      { role: 'assistant', content: '好的，我会简洁一些' },
+      { role: 'user', content: '我的项目使用 TypeScript' },
+      { role: 'assistant', content: 'TypeScript 是个好选择' },
+      { role: 'user', content: '继续' },
+      { role: 'assistant', content: '继续...' },
+    ];
+
+    const result = await extractor.extractFromConversation(messages, 'test-agent');
+    expect(result.items.length).toBeGreaterThanOrEqual(0);
+  });
+});
+
+// === Integration Test ===
+
+describe('LLM Integration Full Flow', () => {
+  it('should work end-to-end with all engines', async () => {
+    // Setup all engines with LLM
+    const engine = new ReflectionEngine({ useLLM: true, llmFallbackToRules: true });
+    const compactor = new ContextCompactor({ useLLM: true, llmFallbackToRules: true });
+    const extractor = new MemoryExtractor({ useLLM: true, llmFallbackToRules: true });
+
+    // Verify they all have LLM support
+    expect(engine.getConfig().useLLM).toBe(true);
+    expect(compactor.getConfig().useLLM).toBe(true);
+
+    // All should work without throwing
+    await expect(engine.reflect('test-agent')).resolves;
+    await expect(compactor.compact([], 'test-agent')).resolves;
+    await expect(extractor.extractFromConversation([], 'test-agent')).resolves;
+  });
+});
diff --git a/desktop/src/lib/agent-memory.ts b/desktop/src/lib/agent-memory.ts
index 509b4cb..fbc90cc 100644
--- a/desktop/src/lib/agent-memory.ts
+++ b/desktop/src/lib/agent-memory.ts
@@ -10,7 +10,7 @@
 // === Types ===
 
 export type MemoryType = 'fact' | 'preference' | 'lesson' | 'context' | 'task';
-export type MemorySource = 'auto' | 'user' | 'reflection';
+export type MemorySource = 'auto' | 'user' | 'reflection' | 'llm-reflection';
 
 export interface MemoryEntry {
   id: string;
diff --git a/desktop/src/lib/context-compactor.ts b/desktop/src/lib/context-compactor.ts
index 8413ec5..3c70a0e 100644
--- a/desktop/src/lib/context-compactor.ts
+++ b/desktop/src/lib/context-compactor.ts
@@ -8,12 +8,18 @@
  * 4. Replace old messages with summary — user sees no interruption
  *
  * Phase 2 implementation: heuristic token estimation + rule-based summarization.
- * Phase 3 upgrade: LLM-powered summarization + semantic importance scoring.
+ * Phase 4 upgrade: LLM-powered summarization + semantic importance scoring.
  *
  * Reference: ZCLAW_AGENT_INTELLIGENCE_EVOLUTION.md §6.3.1
  */
 
 import { getMemoryExtractor, type ConversationMessage } from './memory-extractor';
+import {
+  getLLMAdapter,
+  llmCompact,
+  type LLMServiceAdapter,
+  type LLMProvider,
+} from './llm-service';
 
 // === Types ===
 
@@ -24,6 +30,9 @@ export interface CompactionConfig {
   memoryFlushEnabled: boolean;   // Extract memories before compacting (default true)
   keepRecentMessages: number;    // Always keep this many recent messages (default 6)
   summaryMaxTokens: number;      // Max tokens for the compaction summary (default 800)
+  useLLM: boolean;               // Use LLM for high-quality summarization (Phase 4)
+  llmProvider?: LLMProvider;     // Preferred LLM provider
+  llmFallbackToRules: boolean;   // Fall back to rules if LLM fails
 }
 
 export interface CompactableMessage {
@@ -59,6 +68,8 @@ export const DEFAULT_COMPACTION_CONFIG: CompactionConfig = {
   memoryFlushEnabled: true,
   keepRecentMessages: 6,
   summaryMaxTokens: 800,
+  useLLM: false,
+  llmFallbackToRules: true,
 };
 
 // === Token Estimation ===
@@ -103,9 +114,19 @@ export function estimateMessagesTokens(messages: CompactableMessage[]): number {
 
 export class ContextCompactor {
   private config: CompactionConfig;
+  private llmAdapter: LLMServiceAdapter | null = null;
 
   constructor(config?: Partial<CompactionConfig>) {
     this.config = { ...DEFAULT_COMPACTION_CONFIG, ...config };
+
+    // Initialize LLM adapter if configured
+    if (this.config.useLLM) {
+      try {
+        this.llmAdapter = getLLMAdapter();
+      } catch (error) {
+        console.warn('[ContextCompactor] Failed to initialize LLM adapter:', error);
+      }
+    }
   }
 
   /**
@@ -154,12 +175,13 @@ export class ContextCompactor {
    * Execute compaction: summarize old messages, keep recent ones.
    *
    * Phase 2: Rule-based summarization (extract key points heuristically).
-   * Phase 3: LLM-powered summarization.
+   * Phase 4: LLM-powered summarization for higher quality summaries.
    */
   async compact(
     messages: CompactableMessage[],
     agentId: string,
-    conversationId?: string
+    conversationId?: string,
+    options?: { forceLLM?: boolean }
   ): Promise<CompactionResult> {
     const tokensBeforeCompaction = estimateMessagesTokens(messages);
     const keepCount = Math.min(this.config.keepRecentMessages, messages.length);
@@ -176,7 +198,22 @@ export class ContextCompactor {
     }
 
     // Step 2: Generate summary of old messages
-    const summary = this.generateSummary(oldMessages);
+    let summary: string;
+    if ((this.config.useLLM || options?.forceLLM) && this.llmAdapter?.isAvailable()) {
+      try {
+        console.log('[ContextCompactor] Using LLM-powered summarization');
+        summary = await this.llmGenerateSummary(oldMessages);
+      } catch (error) {
+        console.error('[ContextCompactor] LLM summarization failed:', error);
+        if (!this.config.llmFallbackToRules) {
+          throw error;
+        }
+        console.log('[ContextCompactor] Falling back to rule-based summarization');
+        summary = this.generateSummary(oldMessages);
+      }
+    } else {
+      summary = this.generateSummary(oldMessages);
+    }
 
     // Step 3: Build compacted message list
     const summaryMessage: CompactableMessage = {
@@ -206,6 +243,30 @@ export class ContextCompactor {
     };
   }
 
+  /**
+   * LLM-powered summary generation for high-quality compaction.
+   */
+  private async llmGenerateSummary(messages: CompactableMessage[]): Promise<string> {
+    if (messages.length === 0) return '[对话开始]';
+
+    // Build conversation text for LLM
+    const conversationText = messages
+      .filter(m => m.role === 'user' || m.role === 'assistant')
+      .map(m => `[${m.role === 'user' ? '用户' : '助手'}]: ${m.content}`)
+      .join('\n\n');
+
+    // Use llmCompact helper from llm-service
+    const llmSummary = await llmCompact(conversationText, this.llmAdapter!);
+
+    // Enforce token limit
+    const summaryTokens = estimateTokens(llmSummary);
+    if (summaryTokens > this.config.summaryMaxTokens) {
+      return llmSummary.slice(0, this.config.summaryMaxTokens * 2) + '\n...(摘要已截断)';
+    }
+
+    return `[LLM摘要]\n${llmSummary}`;
+  }
+
   /**
    * Phase 2: Rule-based summary generation.
    * Extracts key topics, decisions, and action items from old messages.
diff --git a/desktop/src/lib/memory-extractor.ts b/desktop/src/lib/memory-extractor.ts
index ad4e674..9ff362d 100644
--- a/desktop/src/lib/memory-extractor.ts
+++ b/desktop/src/lib/memory-extractor.ts
@@ -9,11 +9,20 @@
  *
  * Also handles auto-updating USER.md with discovered preferences.
  *
+ * Phase 1: Rule-based extraction (pattern matching).
+ * Phase 4: LLM-powered semantic extraction with importance scoring.
+ *
  * Reference: ZCLAW_AGENT_INTELLIGENCE_EVOLUTION.md §6.2.2
  */
 
 import { getMemoryManager, type MemoryType } from './agent-memory';
 import { getAgentIdentityManager } from './agent-identity';
+import {
+  getLLMAdapter,
+  llmExtract,
+  type LLMServiceAdapter,
+  type LLMProvider,
+} from './llm-service';
 
 // === Types ===
 
@@ -36,6 +45,15 @@ export interface ConversationMessage {
   content: string;
 }
 
+export interface ExtractionConfig {
+  useLLM: boolean;                  // Use LLM for semantic extraction (Phase 4)
+  llmProvider?: LLMProvider;        // Preferred LLM provider
+  llmFallbackToRules: boolean;      // Fall back to rules if LLM fails
+  minMessagesForExtraction: number; // Minimum messages before extraction
+  extractionCooldownMs: number;     // Cooldown between extractions
+  minImportanceThreshold: number;   // Only save items with importance >= this
+}
+
 // === Extraction Prompt ===
 
 const EXTRACTION_PROMPT = `请从以下对话中提取值得长期记住的信息。
@@ -59,38 +77,80 @@ const EXTRACTION_PROMPT = `请从以下对话中提取值得长期记住的信
 对话内容：
 `;
 
+// === Default Config ===
+
+export const DEFAULT_EXTRACTION_CONFIG: ExtractionConfig = {
+  useLLM: false,
+  llmFallbackToRules: true,
+  minMessagesForExtraction: 4,
+  extractionCooldownMs: 30_000,
+  minImportanceThreshold: 3,
+};
+
 // === Memory Extractor ===
 
 export class MemoryExtractor {
-  private minMessagesForExtraction = 4;
-  private extractionCooldownMs = 30_000; // 30 seconds between extractions
+  private config: ExtractionConfig;
   private lastExtractionTime = 0;
+  private llmAdapter: LLMServiceAdapter | null = null;
+
+  constructor(config?: Partial<ExtractionConfig>) {
+    this.config = { ...DEFAULT_EXTRACTION_CONFIG, ...config };
+
+    // Initialize LLM adapter if configured
+    if (this.config.useLLM) {
+      try {
+        this.llmAdapter = getLLMAdapter();
+      } catch (error) {
+        console.warn('[MemoryExtractor] Failed to initialize LLM adapter:', error);
+      }
+    }
+  }
 
   /**
-   * Extract memories from a conversation using rule-based heuristics.
-   * This is the Phase 1 approach — no LLM call needed.
-   * Phase 2 will add LLM-based extraction using EXTRACTION_PROMPT.
+   * Extract memories from a conversation.
+   * Uses LLM if configured, falls back to rule-based extraction.
    */
   async extractFromConversation(
     messages: ConversationMessage[],
     agentId: string,
-    conversationId?: string
+    conversationId?: string,
+    options?: { forceLLM?: boolean }
   ): Promise<ExtractionResult> {
     // Cooldown check
-    if (Date.now() - this.lastExtractionTime < this.extractionCooldownMs) {
+    if (Date.now() - this.lastExtractionTime < this.config.extractionCooldownMs) {
       return { items: [], saved: 0, skipped: 0, userProfileUpdated: false };
     }
 
     // Minimum message threshold
     const chatMessages = messages.filter(m => m.role === 'user' || m.role === 'assistant');
-    if (chatMessages.length < this.minMessagesForExtraction) {
+    if (chatMessages.length < this.config.minMessagesForExtraction) {
       return { items: [], saved: 0, skipped: 0, userProfileUpdated: false };
     }
 
     this.lastExtractionTime = Date.now();
 
-    // Phase 1: Rule-based extraction (pattern matching)
-    const extracted = this.ruleBasedExtraction(chatMessages);
+    // Try LLM extraction if enabled
+    let extracted: ExtractedItem[];
+    if ((this.config.useLLM || options?.forceLLM) && this.llmAdapter?.isAvailable()) {
+      try {
+        console.log('[MemoryExtractor] Using LLM-powered semantic extraction');
+        extracted = await this.llmBasedExtraction(chatMessages);
+      } catch (error) {
+        console.error('[MemoryExtractor] LLM extraction failed:', error);
+        if (!this.config.llmFallbackToRules) {
+          throw error;
+        }
+        console.log('[MemoryExtractor] Falling back to rule-based extraction');
+        extracted = this.ruleBasedExtraction(chatMessages);
+      }
+    } else {
+      // Rule-based extraction
+      extracted = this.ruleBasedExtraction(chatMessages);
+    }
+
+    // Filter by importance threshold
+    extracted = extracted.filter(item => item.importance >= this.config.minImportanceThreshold);
 
     // Save to memory
     const memoryManager = getMemoryManager();
@@ -135,6 +195,23 @@ export class MemoryExtractor {
     return { items: extracted, saved, skipped, userProfileUpdated };
   }
 
+  /**
+   * LLM-powered semantic extraction.
+   * Uses LLM to understand context and score importance semantically.
+   */
+  private async llmBasedExtraction(messages: ConversationMessage[]): Promise<ExtractedItem[]> {
+    const conversationText = messages
+      .filter(m => m.role === 'user' || m.role === 'assistant')
+      .map(m => `[${m.role === 'user' ? '用户' : '助手'}]: ${m.content}`)
+      .join('\n\n');
+
+    // Use llmExtract helper from llm-service
+    const llmResponse = await llmExtract(conversationText, this.llmAdapter!);
+
+    // Parse the JSON response
+    return this.parseExtractionResponse(llmResponse);
+  }
+
   /**
    * Phase 1: Rule-based extraction using pattern matching.
    * Extracts common patterns from user messages.
diff --git a/desktop/src/lib/reflection-engine.ts b/desktop/src/lib/reflection-engine.ts
index 56e57b6..6b7d49f 100644
--- a/desktop/src/lib/reflection-engine.ts
+++ b/desktop/src/lib/reflection-engine.ts
@@ -15,6 +15,12 @@
 
 import { getMemoryManager, type MemoryEntry } from './agent-memory';
 import { getAgentIdentityManager, type IdentityChangeProposal } from './agent-identity';
+import {
+  getLLMAdapter,
+  llmReflect,
+  type LLMServiceAdapter,
+  type LLMProvider,
+} from './llm-service';
 
 // === Types ===
 
@@ -23,6 +29,9 @@ export interface ReflectionConfig {
   triggerAfterHours: number;          // Reflect after N hours (default 24)
   allowSoulModification: boolean;     // Can propose SOUL.md changes
   requireApproval: boolean;           // Identity changes need user OK
+  useLLM: boolean;                    // Use LLM for deep reflection (Phase 4)
+  llmProvider?: LLMProvider;          // Preferred LLM provider
+  llmFallbackToRules: boolean;        // Fall back to rules if LLM fails
 }
 
 export interface PatternObservation {
@@ -53,6 +62,8 @@ export const DEFAULT_REFLECTION_CONFIG: ReflectionConfig = {
   triggerAfterHours: 24,
   allowSoulModification: false,
   requireApproval: true,
+  useLLM: false,
+  llmFallbackToRules: true,
 };
 
 // === Storage ===
@@ -72,11 +83,21 @@ export class ReflectionEngine {
   private config: ReflectionConfig;
   private state: ReflectionState;
   private history: ReflectionResult[] = [];
+  private llmAdapter: LLMServiceAdapter | null = null;
 
   constructor(config?: Partial<ReflectionConfig>) {
     this.config = { ...DEFAULT_REFLECTION_CONFIG, ...config };
     this.state = this.loadState();
     this.loadHistory();
+
+    // Initialize LLM adapter if configured
+    if (this.config.useLLM) {
+      try {
+        this.llmAdapter = getLLMAdapter();
+      } catch (error) {
+        console.warn('[ReflectionEngine] Failed to initialize LLM adapter:', error);
+      }
+    }
   }
 
   // === Trigger Management ===
@@ -116,9 +137,205 @@ export class ReflectionEngine {
   /**
    * Execute a reflection cycle for the given agent.
    */
-  async reflect(agentId: string): Promise<ReflectionResult> {
+  async reflect(agentId: string, options?: { forceLLM?: boolean }): Promise<ReflectionResult> {
     console.log(`[Reflection] Starting reflection for agent: ${agentId}`);
 
+    // Try LLM-powered reflection if enabled
+    if ((this.config.useLLM || options?.forceLLM) && this.llmAdapter?.isAvailable()) {
+      try {
+        console.log('[Reflection] Using LLM-powered deep reflection');
+        return await this.llmReflectImpl(agentId);
+      } catch (error) {
+        console.error('[Reflection] LLM reflection failed:', error);
+        if (!this.config.llmFallbackToRules) {
+          throw error;
+        }
+        console.log('[Reflection] Falling back to rule-based analysis');
+      }
+    }
+
+    // Rule-based reflection (original implementation)
+    return this.ruleBasedReflect(agentId);
+  }
+
+  /**
+   * LLM-powered deep reflection implementation.
+   * Uses semantic analysis for pattern detection and improvement suggestions.
+   */
+  private async llmReflectImpl(agentId: string): Promise<ReflectionResult> {
+    const memoryMgr = getMemoryManager();
+    const identityMgr = getAgentIdentityManager();
+
+    // 1. Gather context for LLM analysis
+    const allMemories = await memoryMgr.getAll(agentId, { limit: 100 });
+    const context = this.buildReflectionContext(agentId, allMemories);
+
+    // 2. Call LLM for deep reflection
+    const llmResponse = await llmReflect(context, this.llmAdapter!);
+
+    // 3. Parse LLM response
+    const { patterns, improvements } = this.parseLLMResponse(llmResponse);
+
+    // 4. Propose identity changes if patterns warrant it
+    const identityProposals: IdentityChangeProposal[] = [];
+    if (this.config.allowSoulModification) {
+      const proposals = this.proposeIdentityChanges(agentId, patterns, identityMgr);
+      identityProposals.push(...proposals);
+    }
+
+    // 5. Save reflection insights as memories
+    let newMemories = 0;
+    for (const pattern of patterns.filter(p => p.frequency >= 2)) {
+      await memoryMgr.save({
+        agentId,
+        content: `[LLM反思] ${pattern.observation} (出现${pattern.frequency}次, ${pattern.sentiment === 'positive' ? '正面' : pattern.sentiment === 'negative' ? '负面' : '中性'})`,
+        type: 'lesson',
+        importance: pattern.sentiment === 'negative' ? 8 : 5,
+        source: 'llm-reflection',
+        tags: ['reflection', 'pattern', 'llm'],
+      });
+      newMemories++;
+    }
+
+    for (const improvement of improvements.filter(i => i.priority === 'high')) {
+      await memoryMgr.save({
+        agentId,
+        content: `[LLM建议] [${improvement.area}] ${improvement.suggestion}`,
+        type: 'lesson',
+        importance: 7,
+        source: 'llm-reflection',
+        tags: ['reflection', 'improvement', 'llm'],
+      });
+      newMemories++;
+    }
+
+    // 6. Build result
+    const result: ReflectionResult = {
+      patterns,
+      improvements,
+      identityProposals,
+      newMemories,
+      timestamp: new Date().toISOString(),
+    };
+
+    // 7. Update state and history
+    this.state.conversationsSinceReflection = 0;
+    this.state.lastReflectionTime = result.timestamp;
+    this.state.lastReflectionAgentId = agentId;
+    this.saveState();
+
+    this.history.push(result);
+    if (this.history.length > 20) {
+      this.history = this.history.slice(-10);
+    }
+    this.saveHistory();
+
+    console.log(
+      `[Reflection] LLM complete: ${patterns.length} patterns, ${improvements.length} improvements, ` +
+      `${identityProposals.length} proposals, ${newMemories} memories saved`
+    );
+
+    return result;
+  }
+
+  /**
+   * Build context string for LLM reflection.
+   */
+  private buildReflectionContext(agentId: string, memories: MemoryEntry[]): string {
+    const memorySummary = memories.slice(0, 50).map(m =>
+      `[${m.type}] ${m.content} (重要性: ${m.importance}, 访问: ${m.accessCount}次)`
+    ).join('\n');
+
+    const typeStats = new Map<string, number>();
+    for (const m of memories) {
+      typeStats.set(m.type, (typeStats.get(m.type) || 0) + 1);
+    }
+
+    const recentHistory = this.history.slice(-3).map(h =>
+      `上次反思(${h.timestamp}): ${h.patterns.length}个模式, ${h.improvements.length}个建议`
+    ).join('\n');
+
+    return `
+Agent ID: ${agentId}
+记忆总数: ${memories.length}
+记忆类型分布: ${[...typeStats.entries()].map(([k, v]) => `${k}:${v}`).join(', ')}
+
+最近记忆:
+${memorySummary}
+
+历史反思:
+${recentHistory || '无'}
+`;
+  }
+
+  /**
+   * Parse LLM response into structured reflection data.
+   */
+  private parseLLMResponse(response: string): {
+    patterns: PatternObservation[];
+    improvements: ImprovementSuggestion[];
+  } {
+    const patterns: PatternObservation[] = [];
+    const improvements: ImprovementSuggestion[] = [];
+
+    try {
+      // Try to extract JSON from response
+      const jsonMatch = response.match(/\{[\s\S]*\}/);
+      if (jsonMatch) {
+        const parsed = JSON.parse(jsonMatch[0]);
+
+        if (Array.isArray(parsed.patterns)) {
+          for (const p of parsed.patterns) {
+            patterns.push({
+              observation: p.observation || p.observation || '未知模式',
+              frequency: p.frequency || 1,
+              sentiment: p.sentiment || 'neutral',
+              evidence: Array.isArray(p.evidence) ? p.evidence : [],
+            });
+          }
+        }
+
+        if (Array.isArray(parsed.improvements)) {
+          for (const i of parsed.improvements) {
+            improvements.push({
+              area: i.area || '通用',
+              suggestion: i.suggestion || i.suggestion || '',
+              priority: i.priority || 'medium',
+            });
+          }
+        }
+      }
+    } catch (error) {
+      console.warn('[Reflection] Failed to parse LLM response as JSON:', error);
+
+      // Fallback: extract text patterns
+      if (response.includes('模式') || response.includes('pattern')) {
+        patterns.push({
+          observation: 'LLM 分析完成，但未能解析结构化数据',
+          frequency: 1,
+          sentiment: 'neutral',
+          evidence: [response.slice(0, 200)],
+        });
+      }
+    }
+
+    // Ensure we have at least some output
+    if (patterns.length === 0) {
+      patterns.push({
+        observation: 'LLM 反思完成，未检测到显著模式',
+        frequency: 1,
+        sentiment: 'neutral',
+        evidence: [],
+      });
+    }
+
+    return { patterns, improvements };
+  }
+
+  /**
+   * Rule-based reflection (original implementation).
+   */
+  private async ruleBasedReflect(agentId: string): Promise<ReflectionResult> {
     const memoryMgr = getMemoryManager();
     const identityMgr = getAgentIdentityManager();