feat(retry): telemetry ai_retry_manual + stats AI 수동 재시도 (#2 v0.2.3)

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

tests/unit/TelemetryService.test.ts

@@ -148,7 +148,7 @@ describe('TelemetryService.readAllRecent', () => {
     expect(events).toHaveLength(3);
     // discriminant narrowing — noteId 없는 kind(empty_trash/expired_banner_shown/expired_batch_trash) 가 섞이면 명시적으로 실패
     expect(events.map((e) =>
-      (e.kind === 'empty_trash' || e.kind === 'expired_banner_shown' || e.kind === 'expired_batch_trash' || e.kind === 'ollama_unreachable' || e.kind === 'ollama_recovered' || e.kind === 'ollama_recheck_manual')
+      (e.kind === 'empty_trash' || e.kind === 'expired_banner_shown' || e.kind === 'expired_batch_trash' || e.kind === 'ollama_unreachable' || e.kind === 'ollama_recovered' || e.kind === 'ollama_recheck_manual' || e.kind === 'ai_retry_manual')
         ? null
         : e.payload.noteId
     )).toEqual(['a', 'b', 'b']);
@@ -164,7 +164,7 @@ describe('TelemetryService.readAllRecent', () => {
     expect(events).toHaveLength(1);
     const ev = events[0]!;
     expect(ev.kind).toBe('capture');
-    if (ev.kind !== 'empty_trash' && ev.kind !== 'expired_banner_shown' && ev.kind !== 'expired_batch_trash' && ev.kind !== 'ollama_unreachable' && ev.kind !== 'ollama_recovered' && ev.kind !== 'ollama_recheck_manual') expect(ev.payload.noteId).toBe('a');
+    if (ev.kind !== 'empty_trash' && ev.kind !== 'expired_banner_shown' && ev.kind !== 'expired_batch_trash' && ev.kind !== 'ollama_unreachable' && ev.kind !== 'ollama_recovered' && ev.kind !== 'ollama_recheck_manual' && ev.kind !== 'ai_retry_manual') expect(ev.payload.noteId).toBe('a');
   });
 
   it('returns [] when dir missing', async () => {

tests/unit/telemetryEvents.test.ts

@@ -250,3 +250,31 @@ describe('ollama_unreachable / ollama_recovered / ollama_recheck_manual events',
     })).toThrow();
   });
 });
+
+describe('ai_retry_manual event', () => {
+  it('parses valid ai_retry_manual', () => {
+    const ev = validateEvent({
+      ts: '2026-05-01T00:00:00.000Z',
+      kind: 'ai_retry_manual',
+      payload: { failedCount: 5 }
+    });
+    if (ev.kind !== 'ai_retry_manual') throw new Error('discriminant');
+    expect(ev.payload.failedCount).toBe(5);
+  });
+
+  it('rejects ai_retry_manual with failedCount=0 (≥1 invariant)', () => {
+    expect(() => validateEvent({
+      ts: '2026-05-01T00:00:00.000Z',
+      kind: 'ai_retry_manual',
+      payload: { failedCount: 0 }
+    })).toThrow();
+  });
+
+  it('rejects ai_retry_manual with extra payload field (privacy invariant)', () => {
+    expect(() => validateEvent({
+      ts: '2026-05-01T00:00:00.000Z',
+      kind: 'ai_retry_manual',
+      payload: { failedCount: 5, rawText: 'leak' }
+    })).toThrow();
+  });
+});

tests/unit/telemetryStats.test.ts

@@ -151,3 +151,16 @@ describe('aggregateStats — ollama_* events', () => {
     expect(r.md).toMatch(/평균 downtimeMs.*N\/A/);
   });
 });
+
+describe('aggregateStats — ai_retry_manual', () => {
+  it('counts events and sums failedCount', () => {
+    const events = [
+      { ts: '2026-05-01T00:00:00.000Z', kind: 'ai_retry_manual' as const, payload: { failedCount: 3 } },
+      { ts: '2026-05-01T01:00:00.000Z', kind: 'ai_retry_manual' as const, payload: { failedCount: 7 } }
+    ];
+    const r = aggregateStats(events, new Date('2026-05-02T00:00:00Z'));
+    expect(r.md).toContain('ai_retry_manual');
+    // 2회 / 누적 10건
+    expect(r.md).toMatch(/AI 수동 재시도.*2회.*10건/);
+  });
+});