fix(memory): wire auto_extract through orchestrator compaction

src/context/compaction.test.ts

@@ -3,6 +3,7 @@ import { compactHistory, DEFAULT_COMPACTION_CONFIG } from './compaction.js';
 import type { CompactionConfig } from './compaction.js';
 import type { AgentOrchestrator } from '../backends/native/orchestrator.js';
 import type { Message } from '../models/types.js';
+import type { MemoryStore } from '../memory/store.js';
 
 function makeMockOrchestrator(summaryText = 'Summary of conversation'): AgentOrchestrator {
   return {
@@ -146,4 +147,51 @@ describe('compactHistory', () => {
     expect(result.messages.some(msg => typeof msg.content === 'string' && msg.content.includes('[Summary of earlier conversation]'))).toBe(true);
     expect(result.messages.length).toBeGreaterThan(5);
   });
+
+  it('auto-extracts memory facts by default when memoryStore is provided', async () => {
+    const messages = makeMessages(10);
+    const memoryStore = {
+      write: vi.fn(),
+    } as unknown as MemoryStore;
+    const orchestrator = {
+      getDelegationTier: vi.fn().mockReturnValue('fast'),
+      delegate: vi
+        .fn()
+        .mockResolvedValueOnce({
+          content: 'Compacted summary',
+          usage: { inputTokens: 100, outputTokens: 50 },
+          tier: 'fast',
+        })
+        .mockResolvedValueOnce({
+          content: '- User prefers concise answers.',
+          usage: { inputTokens: 40, outputTokens: 20 },
+          tier: 'fast',
+        }),
+    } as unknown as AgentOrchestrator;
+
+    await compactHistory({ messages, orchestrator, config, memoryStore });
+
+    expect(orchestrator.getDelegationTier).toHaveBeenCalledWith('memory_extraction');
+    expect(memoryStore.write).toHaveBeenCalledWith('global', '- User prefers concise answers.', 'append');
+  });
+
+  it('skips auto-extraction when autoExtract is false', async () => {
+    const messages = makeMessages(10);
+    const memoryStore = {
+      write: vi.fn(),
+    } as unknown as MemoryStore;
+    const orchestrator = {
+      getDelegationTier: vi.fn().mockReturnValue('fast'),
+      delegate: vi.fn().mockResolvedValue({
+        content: 'Compacted summary',
+        usage: { inputTokens: 100, outputTokens: 50 },
+        tier: 'fast',
+      }),
+    } as unknown as AgentOrchestrator;
+
+    await compactHistory({ messages, orchestrator, config, memoryStore, autoExtract: false });
+
+    expect(orchestrator.getDelegationTier).not.toHaveBeenCalledWith('memory_extraction');
+    expect(memoryStore.write).not.toHaveBeenCalled();
+  });
 });