chore(release): v0.3.9 — AI 흐름 unblock UI + FTS5 escape

audit edge case 3건:
- pending 노트 "건너뛰기" 버튼 (cancelPending: pending → disabled + jobs DELETE)
- failed 노트 per-note "재시도" 버튼 (retryOneFailed: failed → pending + enqueue)
- FTS5 sanitize regex 확장 (backtick/dash/caret 추가)

동시 편집 race 는 EditableField guard 가 이미 처리 (수정 불필요).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/unit/NoteRepository.test.ts

@@ -770,6 +770,41 @@ describe('NoteRepository — failed retry helpers', () => {
     expect(jobs[0]!.nextRunAt).toBe('2026-04-30T00:00:00.000Z');
   });
 
+  it('v0.3.9 — retryOneFailed: failed → pending + pending_jobs INSERT', () => {
+    const a = makeFailed('a');
+    const b = makeFailed('b');
+    const r = repo.retryOneFailed(a, '2026-05-01T12:00:00.000Z');
+    expect(r).toEqual({ ok: true });
+    expect(repo.findById(a)!.aiStatus).toBe('pending');
+    expect(repo.findById(a)!.aiError).toBeNull();
+    expect(repo.findById(b)!.aiStatus).toBe('failed'); // 다른 노트 영향 없음
+    const jobs = repo.getAllPendingJobs();
+    expect(jobs.find((j) => j.noteId === a)).toBeDefined();
+  });
+
+  it('v0.3.9 — retryOneFailed: non-failed status 면 no-op', () => {
+    const { id } = repo.create({ rawText: 'pending note' });
+    const r = repo.retryOneFailed(id, '2026-05-01T12:00:00.000Z');
+    expect(r).toEqual({ ok: false });
+  });
+
+  it('v0.3.9 — cancelPending: pending → disabled + pending_jobs DELETE', () => {
+    const { id } = repo.create({ rawText: 'x' }); // ai_status=pending
+    expect(repo.findById(id)!.aiStatus).toBe('pending');
+    const r = repo.cancelPending(id, '2026-05-01T12:00:00.000Z');
+    expect(r).toEqual({ ok: true });
+    expect(repo.findById(id)!.aiStatus).toBe('disabled');
+    const jobs = repo.getAllPendingJobs().filter((j) => j.noteId === id);
+    expect(jobs).toHaveLength(0);
+  });
+
+  it('v0.3.9 — cancelPending: non-pending status 면 no-op', () => {
+    const id = makeFailed('a');
+    const r = repo.cancelPending(id, '2026-05-01T12:00:00.000Z');
+    expect(r).toEqual({ ok: false });
+    expect(repo.findById(id)!.aiStatus).toBe('failed'); // 변경 없음
+  });
+
   it('setNextRunAt — attempts 변경 없이 next_run_at + last_error 갱신', () => {
     const { id } = repo.create({ rawText: 'x' });
     repo.incrementJobAttempt(id, '2026-05-01T11:00:00.000Z', 'first error');

tests/unit/ftsHelpers.test.ts

@@ -15,6 +15,12 @@ describe('sanitizeFtsQuery', () => {
   it('returns empty string for whitespace-only', () => {
     expect(sanitizeFtsQuery('   ')).toBe('');
   });
+  it('v0.3.9 — dash/caret/backtick 추가 sanitize', () => {
+    expect(sanitizeFtsQuery('key-value')).toBe('key value');
+    expect(sanitizeFtsQuery('^prefix')).toBe('prefix');
+    expect(sanitizeFtsQuery('back`tick')).toBe('back tick');
+    expect(sanitizeFtsQuery('-NOT')).toBe('NOT');
+  });
 });
 
 describe('computeCutoff', () => {