fix(ui): inboxWindow 기본 크기 1200×800 → 1440×900 (헤더 버튼 뭉개짐 해소)

tag(키워드) vs notebook(컨텍스트) 의미 분리 — chip 을 이동 버튼 왼쪽에 배치.
dropdown 방향을 top→bottom(아래로) 에서 bottom→top(위로) 으로 변경 (footer 위치 대응).

CHANGELOG.md

@@ -3,6 +3,58 @@
 본 파일은 Inkling 의 버전별 사용자 영향 변경 사항을 기록한다.
 형식은 [Keep a Changelog](https://keepachangelog.com/) 를 느슨하게 따른다.
 
+## [0.4.0] — 2026-05-15 (force re-tag, dogfood UX 2회 보완)
+
+### 추가 dogfood UX 2회차 (2026-05-15 force re-tag)
+
+dogfood 2일차 피드백 묶음. force re-tag 로 같은 v0.4.0 에 추가.
+
+- **AI 정리하기 (default notebook batch 분류)** — 사이드바 default notebook 선택 시 main 영역 상단에 "🪄 AI 정리하기" 버튼. 클릭 → AI 가 default 의 active 노트들을 한 prompt 에 묶어 분석 → BatchMoveModal 에 noteId 별 추천 notebook + checkbox → 사용자 confirm 후 일괄 moveNote. top N=50 cap, 한국어 prompt, hallucinated notebook 이름은 null 로 coerce.
+- **노트북 순서 변경** — `notebooks.sort_order` 컬럼 (m009 마이그레이션) + NotebookList row hover 시 ↑↓ 버튼. 인접 sort_order swap. drag-drop 은 v0.5+ 후보.
+- **이동 UX 정리** — NoteCard 의 notebook chip 을 tag 영역 → footer 의 "이동" 버튼 옆으로 이동. tag(키워드) / notebook(컨텍스트) 의미 분리. dropdown 도 위쪽으로 펼침.
+
+### 추가 dogfood UX 1회차 (2026-05-15)
+
+- **NotebookChip 시각 강화** — 청색 배경 + 📓 아이콘 + ▾ caret + dropdown 헤더 "이동할 노트북". chip 클릭 시 다른 notebook 선택 dropdown 이 보이는 affordance 명확화. 다른 notebook 없으면 disabled.
+- **헤더 좌측 ☰ 햄버거 버튼** — 마우스 클릭으로 사이드바 토글 (Cmd/Ctrl+B 단축키와 동일).
+- **사이드바 default visible** — 새 사용자가 처음부터 사이드바 보이게 (`settings.getSidebarVisible` default false → true). 기존 사용자가 명시적으로 false 저장했다면 그 값 그대로.
+- **inboxWindow 기본 크기 확장** — 900×720 → 1200×800. 사이드바 240px 가 default 가시화되므로 main 영역 확보.
+
+### 게이트 (2회차 후)
+
+- 단위 877 PASS
+- typecheck 0 errors
+
+---
+
+### 원본 release (2026-05-15)
+
+Notebooks + Lifecycle Simplification. 19일 dogfood 데이터 (archived 0건 / mlx-ops tag 가 사실상 컨텍스트 그룹 역할) 가 묶음 변경의 근거.
+
+### 추가
+
+- **Notebook 카테고리** — 좌측 사이드바 (Cmd+B / Ctrl+B 토글), 색 + count badge. notebooks 테이블 + notes.notebook_id FK RESTRICT. m008 마이그레이션이 default "기본" notebook 자동 생성 후 모든 기존 노트 배치.
+- **AI 자동 fit 매칭** — 매 capture 시 AI 가 prompt 의 notebooks 목록을 보고 best-fit 자동 배치 (응답의 notebook_match 필드). NoteCard 의 chip 으로 1-click 변경 가능.
+- **Promotion 제안** — 같은 tag 가 3건 이상 default notebook 에 누적되면 "새 notebook 으로 분리?" banner 표시. 24h snooze + 영구 dismiss 지원 (settings 의 promotion_snoozed_until_ms / promotion_dismissed_tags 영속화).
+- **사이드바 UX** — NotebookCreateModal (이름 + 6색 palette + 중복 검증), NotebookList (선택 highlight + count), 모달/사이드바 toggle 단축키.
+- **검색 scope 토글** — "이 노트북" / "모든 노트북" dropdown.
+
+### 변경
+
+- **lifecycle 3분기** — `archived` status 제거. 헤더 탭이 Inbox / 완료 / 휴지통 (3탭). MoveStatusModal 의 "보관" 옵션도 제거. classifyStatus 의 AI 응답이 archived 면 completed 로 coerce. ImportService 가 backward compat 위해 archived 노트 import 시 completed 로 변환.
+- **NoteRepository.findExpiredCandidates** 의 scope 가 inbox 만 → notebook 별 scope (Task 4 의 countByStatus 옵션 등 통합 효과).
+- selectedNotebookId 변경 시 list / counts 자동 refresh.
+
+### 게이트
+
+- 단위 테스트 851 PASS (m008 마이그레이션 / NotebookRepository / AI prompt + schema / AiWorker matching / store + settings 영속화 / Sidebar / NotebookCreateModal / PromotionBanner / NoteCard chip / SearchBox scope / archived 제거 회귀 가드).
+- typecheck 0 errors.
+- 신규 npm dependency 0.
+
+### 업그레이드
+
+v0.3.14 인스톨러 위에 v0.4.0 인스톨러를 같은 위치에 실행하면 in-place 업그레이드. m008 마이그레이션이 첫 launch 시 자동 실행되어 default notebook "기본" 생성 + 모든 기존 노트 배치.
+
 ## [0.3.14] — 2026-05-12 (force re-tag: 2026-05-14, 추가 dogfood fixes 7건)
 
 ### 추가 dogfood fixes (2026-05-14 force re-tag)

docs/superpowers/specs/2026-05-09-v032-cut-g-design.md

@@ -1,5 +1,7 @@
 # v0.3.2 — Cut G Design (사이드바 + notebook 카테고리)
 
+> **[Deprecated 2026-05-14]** 본 cut 은 [v0.4 design](2026-05-14-v04-notebooks-lifecycle-design.md) 으로 승격되며 lifecycle 단순화 (archived 제거) 를 함께 다룸. dogfood 데이터 (archived 0건 / 19일) 가 archived 차원의 dead code 임을 입증해 묶음 변경이 정신 부담 측면에서 더 정합. 본 문서는 history 참조용으로 유지.
+
 **작성일:** 2026-05-09
 **선행 문서:**
 

docs/superpowers/specs/2026-05-14-v04-notebooks-lifecycle-design.md

@@ -0,0 +1,327 @@
+# v0.4 — Notebooks + Lifecycle Simplification Design
+
+**작성일:** 2026-05-14
+**선행 문서:**
+
+- `docs/superpowers/specs/2026-04-25-dogfood-feedback.md` F25 (raw idea)
+- `docs/superpowers/specs/2026-05-09-v032-cut-g-design.md` (v0.3.2 Cut G — **deprecate**, 본 문서로 승격)
+- `docs/superpowers/strategy/v028plus-roadmap.md` Cut G position
+
+---
+
+## 1. 정체성
+
+inbox 분류 layer 도입 + lifecycle 단순화. 단일 cut 으로 묶음 — 두 변경이 같은 UI 영역 (헤더 탭 + status 모델) 을 동시 손대므로 분리 시 중간 상태가 어색.
+
+- **분류 (notebook)**: cross-cutting 컨텍스트. "회사" / "개인" / "학습" 같은 공간 구분. 단일 DB 안 `notebook_id` 컬럼 (옵션 B — Cut G 결정 승계).
+- **lifecycle 단순화**: status 4분기 → 3분기. `archived` 제거.
+
+---
+
+## 2. dogfood 근거 (왜 이 시점에 이 cut)
+
+2026-04-25 ~ 2026-05-14 (19일) telemetry + DB:
+
+| 신호 | 수치 | 의미 |
+|------|------|------|
+| `archived` 노트 | 0건 | 4분기 lifecycle 중 1차원 dead — 사용자가 한 번도 사용 안 함 |
+| `active` 노트 | 10건 | 사용 중 |
+| `completed` 노트 | 8건 | 적극 사용 |
+| `trashed` 노트 | 20건 | 적극 사용 |
+| top tag `mlx-ops` | 6건 | 단일 tag 가 사실상 "MLX팀 메모" 컨텍스트 그룹 역할 — tag 의 분류 욕구 명확 |
+| tag vocab 적중률 | 32.8% (19/58) | 새 tag 빈번 생성 — 분류 욕구 일관성 부족, grouping UI 필요 |
+
+→ **archived 는 제거 안전** (마이그레이션 영향 0건). **분류 욕구는 데이터로 확인**되었으나 tag 만으로 충족 어려움 (적중률 낮음).
+
+사용자 우려 ("분류 × lifecycle 햇갈림") 의 대응: archived 제거로 한 차원 줄임. 결과 layer = (notebook × 3분기 × tag) — 3차원이지만 archived 0건 빼서 정신 부담 줄음.
+
+---
+
+## 3. 범위
+
+| 항목 | 결정 |
+|------|------|
+| **분류 모델** | 옵션 B — `notebook_id` 카테고리, 단일 DB. 옵션 A (다중 profile + 비밀번호 잠금) 는 v0.5+ 후보. |
+| **lifecycle 차원** | 3분기 — `active` (inbox) / `completed` (완료) / `trashed` (휴지통). `archived` 제거. |
+| **default notebook** | 마이그레이션 시 "기본" 1개 자동 생성. 모든 기존 노트 배치. |
+| **사이드바 가시성** | 사용자 토글 + last state (`settings.sidebar_visible`). Cmd+B / Ctrl+B 단축키. |
+| **사이드바 내용** | 상단 notebook 목록 + 하단 메모 list (compact view, current notebook + current view 필터). |
+| **사이드바 폭** | default 240px, `settings.sidebar_width` 조정 가능 (180-400). |
+| **notebook 삭제** | FK RESTRICT — 메모 잔류 시 throw. UI 가 "메모 N건 이동 후 재시도" 안내. |
+| **search scope** | 기본 current notebook, 사용자가 dropdown 으로 "모든 노트북" 전환 가능. |
+| **새 capture 의 notebook** | current `selectedNotebookId`. 사용자가 다른 notebook 에 있으면 거기 저장. |
+
+---
+
+## 4. Schema 마이그레이션 (m008)
+
+```sql
+-- 1. notebooks 테이블 생성
+CREATE TABLE notebooks (
+  id TEXT PRIMARY KEY,
+  name TEXT NOT NULL,
+  color TEXT,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL
+);
+CREATE UNIQUE INDEX idx_notebooks_name ON notebooks(name);
+
+-- 2. notes.notebook_id 추가 (FK, NOT NULL — default 통해 보장)
+ALTER TABLE notes ADD COLUMN notebook_id TEXT
+  REFERENCES notebooks(id) ON DELETE RESTRICT;
+
+-- 3. default notebook "기본" 생성
+INSERT INTO notebooks (id, name, created_at, updated_at)
+  VALUES ('<uuidv7>', '기본', '<now>', '<now>');
+
+-- 4. 모든 기존 노트를 default notebook 에 배치
+UPDATE notes SET notebook_id = '<default-id>' WHERE notebook_id IS NULL;
+
+-- 5. NOT NULL 제약 추가 (마이그레이션 후)
+-- SQLite ALTER 제약: 새 테이블 만들고 복사 패턴 사용 (better-sqlite3 표준)
+
+-- 6. archived → completed 정리 (실제 0건이라 no-op, 안전 위해 명시)
+UPDATE notes SET status = 'completed' WHERE status = 'archived';
+
+-- 7. status CHECK constraint 갱신: archived 제거
+-- 마찬가지로 새 테이블 만들고 복사 패턴
+```
+
+마이그레이션 안전성: 기존 archived 노트 0건 확인 (telemetry + DB query). default notebook 자동 생성으로 기존 사용자 영향 없음.
+
+---
+
+## 5. NotebookRepository
+
+```ts
+interface Notebook {
+  id: string;
+  name: string;
+  color: string | null;
+  createdAt: string;
+  updatedAt: string;
+  noteCount: number;  // active 노트만 (trashed 제외)
+}
+
+class NotebookRepository {
+  list(): Notebook[];                                // count 포함, name ASC
+  findById(id: string): Notebook | null;
+  create(input: { name: string; color?: string }): Notebook;
+  rename(id: string, name: string): void;            // UNIQUE name violation throw
+  setColor(id: string, color: string | null): void;
+  delete(id: string): { ok: true } | { ok: false; reason: 'has_notes' };
+  // 메모 잔류 시 FK RESTRICT throw → ok:false 변환
+
+  moveNote(noteId: string, notebookId: string): void;
+  countByNotebook(): Map<string, number>;            // 한번 호출로 전체 count
+}
+```
+
+---
+
+## 6. UI — 사이드바
+
+```
+┌───────────────┬─────────────────────────────────────┐
+│ [≡] Inkling   │ [Inbox(N) 완료(N) 휴지통(N)] [🔍] [⚙] │
+├───────────────┼─────────────────────────────────────┤
+│ ● 기본 (5)    │                                     │
+│ ● 회사 (12)   │    NoteCard list (main pane)        │
+│ ● 학습 (3)    │                                     │
+│ + 새 노트북   │                                     │
+│ ─────         │                                     │
+│ 메모 빠른 list │                                     │
+│ ・제목1       │                                     │
+│ ・제목2 #tag  │                                     │
+│ ・제목3       │                                     │
+└───────────────┴─────────────────────────────────────┘
+```
+
+- 좌측, 폭 240px (사용자 조정 가능)
+- 헤더 좌측 `≡` 클릭 → 토글. 단축키 `Cmd+B` / `Ctrl+B`
+- 상단: notebook 목록 (active 노트 count badge). 클릭 → `selectedNotebookId` 변경
+- "+ 새 노트북" 클릭 → NotebookCreateModal (name + optional color)
+- 노트북 우클릭 / hover icon → rename / color 변경 / delete
+- 하단: 메모 list — `selectedNotebookId` + `selectedView` (status 탭) 필터 결과의 compact view. 클릭 → main pane 의 noteCard 로 scroll.
+
+---
+
+## 7. UI — lifecycle 단순화
+
+| 변경 | 내용 |
+|------|------|
+| 헤더 탭 | "Inbox / 완료 / 보관 / 휴지통" → **"Inbox / 완료 / 휴지통"** (3탭) |
+| MoveStatusModal | "보관" 옵션 제거. 사용자 선택지: "완료" / "휴지통" (또는 "복원" — trash mode 에서) |
+| countsByStatus IPC | `archived` 필드 제거. 기존 호출자 (헤더 badge) 적용 |
+| NoteRepository.setStatus | `archived` 인자 받으면 throw (defensive). 마이그레이션 후 호출자 없음 |
+| 데이터 호환성 | 기존 archived 노트 0건이라 마이그레이션 단계에서 `completed` 로 일괄 이동 |
+
+---
+
+## 8. store / IPC
+
+```ts
+interface InboxStore {
+  notebooks: Notebook[];
+  selectedNotebookId: string | null;  // null = "모든 노트북" 검색 결과 등 특수 모드
+  sidebarVisible: boolean;
+  sidebarWidth: number;
+  loadNotebooks: () => Promise<void>;
+  selectNotebook: (id: string) => void;
+  createNotebook: (name: string, color?: string) => Promise<{ ok: boolean; reason?: string }>;
+  renameNotebook: (id: string, name: string) => Promise<{ ok: boolean; reason?: string }>;
+  setNotebookColor: (id: string, color: string | null) => Promise<void>;
+  deleteNotebook: (id: string) => Promise<{ ok: boolean; reason?: string }>;
+  moveNoteToNotebook: (noteId: string, notebookId: string) => Promise<void>;
+  toggleSidebar: () => void;
+}
+```
+
+IPC channels (신설):
+- `notebook:list` / `notebook:create` / `notebook:rename` / `notebook:set-color` / `notebook:delete`
+- `notebook:move-note`
+
+기존 변경:
+- `inbox:list` / `inbox:list-by-status` 에 `notebookId?` 옵션 추가 (없으면 모든 노트북)
+- `inbox:counts-by-status` 도 `notebookId?` 옵션 + `archived` 필드 제거
+
+---
+
+## 9. search 통합
+
+- 기본 scope: `selectedNotebookId` 안 검색
+- search box 옆 dropdown: "이 노트북" / "모든 노트북"
+- `inbox:search` 에 `notebookId?` 옵션 추가
+- search 결과 NoteCard 가 notebook 표시 (모든 노트북 검색 시) — 작은 색 chip + 이름
+
+---
+
+## 10. sync 영향 (Cut E 이후)
+
+- export 시 frontmatter 에 `notebook` 필드 추가 (이름 — 다기기 간 id 충돌 회피)
+- import 시 notebook 이름이 없으면 생성, 있으면 reuse
+- 충돌: 같은 이름 + 다른 id 면 import side 의 id 우선 (deterministic)
+
+---
+
+## 11. AI × Notebook 통합
+
+### 11-1. fit 매칭 (매 capture)
+
+- `buildPrompt` 가 현재 notebooks 목록 (이름) 을 prompt 에 포함
+- AI 응답 JSON 에 `notebook_match` 필드 (기존 notebook 이름 또는 null) 추가
+- schema (Zod) 갱신: `notebook_match: z.string().nullable().optional()`
+- 매치 성공 시 자동 배치 (Zero-Effort 가치 우선). NoteCard 의 notebook chip 클릭으로 1-click 변경 가능
+- 매치 실패 / null → default "기본" notebook
+
+prompt 추가 라인 예시 (한국어 자연어):
+
+```
+사용 가능한 노트북: 기본, 회사, 학습
+이 노트가 위 노트북 중 하나에 명확히 속하면 그 이름을 "notebook_match" 에 반환. 그렇지 않으면 null.
+새 노트북 이름을 만들지 말 것 — 기존 목록 안에서만 선택.
+```
+
+### 11-2. promotion 제안
+
+**trigger** — 같은 tag 가 **active 노트 안 3건 이상** 누적되고 그 노트들이 모두 default "기본" notebook 에 있을 때 (`active` + `notebook_id = default` + 동일 tag).
+
+분석 timing — inbox 열릴 때 lazy. 단순 SQL aggregation 이라 cost 무시 가능.
+
+```sql
+SELECT t.name, COUNT(DISTINCT n.id) AS cnt
+  FROM tags t
+  JOIN note_tags nt ON nt.tag_id = t.id
+  JOIN notes n ON n.id = nt.note_id
+ WHERE n.status = 'active'
+   AND n.notebook_id = '<default-id>'
+ GROUP BY t.id
+HAVING cnt >= 3
+```
+
+매치 발생 시 InboxStore 에 `promotionCandidate: { tag, noteIds, suggestedName }` 채움. banner 가 표시.
+
+**v0.4 first release 는 rule only** — LLM 의 semantic cluster 분석은 cost 큼. dogfood 결과 보고 v0.5+ 검토.
+
+### 11-3. UI — PromotionBanner
+
+- Inbox 상단, RecallBanner / ExpiryBanner 와 같은 위치
+- 문구 예: "💡 `mlx-ops` 관련 노트 6개가 모였어요. 새 노트북 **MLX Ops** 로 분리할까요?"
+- 액션: `[수락]` `[나중에]` `[숨기기]`
+- 수락 → 작은 modal 띄움 (이름 inline 수정 + color 선택) → notebook 생성 + 해당 noteIds 일괄 이동 + 사이드바 자동 열어 새 notebook 가시화
+- 나중에 → 24h snooze (RecallBanner 패턴)
+- 숨기기 → 해당 tag 영구 dismiss (`settings.promotion_dismissed_tags` array)
+
+### 11-4. notebook 이름 generation
+
+- default: tag 이름을 Title Case 변환 (예: `mlx-ops` → `MLX Ops`, `user-management` → `User Management`)
+- 사용자가 수락 modal 에서 inline 수정 가능
+
+### 11-5. promotion 후 status 보존
+
+- 이동된 노트의 `status` 그대로 유지 (active → active, completed → completed)
+- `notebook_id` 만 변경
+
+### 11-6. 새 노트의 자동 fit 매칭이 promoted notebook 도 인식
+
+- promotion 후 notebooks 목록에 새 notebook 포함 → 다음 capture 의 prompt 에 자동 반영
+- 그 후 같은 주제 노트는 자동으로 새 notebook 에 들어감
+
+---
+
+## 12. 테스트 전략
+
+| 영역 | 케이스 |
+|------|--------|
+| NotebookRepository | CRUD + count + delete RESTRICT |
+| migration m008 | default notebook 생성 + 기존 노트 마이그레이션 + archived → completed |
+| store actions | 토글 + 선택 변경 + create/rename/delete 흐름 |
+| UI 사이드바 | notebook 목록 render + 클릭 selectedNotebookId 변경 + count badge |
+| 메모 list 필터 | notebook + view 필터 combination |
+| search scope | current / all 옵션별 결과 |
+| MoveStatusModal | archived 옵션 부재 |
+| 헤더 탭 | 3탭 + count |
+| AI prompt notebook_match | prompt 에 notebooks 목록 포함 + AI 응답 schema 의 notebook_match 필드 |
+| capture 자동 fit | AI 응답 notebook_match 매치 시 자동 배치, 미매치 시 default |
+| promotion query | tag 3건 이상 + default notebook 클러스터 검출 |
+| PromotionBanner | 수락 → notebook 생성 + 일괄 이동 / 나중에 → 24h snooze / 숨기기 → tag dismiss 영구 저장 |
+
+---
+
+## 13. risks
+
+| risk | 대응 |
+|------|------|
+| migration 의 status check constraint 갱신 실패 | SQLite 새 테이블 복사 패턴 + 검증 query 후 commit |
+| 좁은 화면 (1280×720) 에서 사이드바 부담 | settings.sidebar_visible default false (사용자가 켜야 보임) |
+| notebook 삭제 시 RESTRICT error UX | "메모 N건 이동 후 다시 시도" + 이동 dialog 제공 |
+| sync (Cut E) 와 결합 시 notebook 정합성 | frontmatter notebook 이름 기반 — 다기기 간 ID 충돌 회피 |
+| tag 와 notebook 의미 혼동 | UI text 명시: "노트북 = 컨텍스트 (회사 / 개인)", "태그 = 주제 키워드 (mlx-ops, keycloak)" — 설정 페이지 도움말에 안내 |
+| 사용자가 다중 notebook 실제 안 만들면 default 1개 + 사이드바 = noise | default sidebar hidden + 사용자가 2번째 notebook 만들 때 자동 reveal hint |
+| AI 가 notebook_match 에 새 이름 ad-hoc 생성 시도 | prompt 에 "기존 목록 안에서만 선택, 새 이름 만들지 말 것" 명시 + schema 검증 단계에서 notebooks 목록과 매치 안 되는 값은 null 로 coerce |
+| 같은 tag 의 promotion 이 반복 노출되어 사용자 피로 | "숨기기" → 영구 dismiss (settings 의 array). RecallBanner 의 24h snooze 와 별개 영구 저장소 |
+
+---
+
+## 14. 게이트
+
+- 단위 테스트 — notebook CRUD + migration + UI 사이드바 + 메모 list 필터 + status 3분기 회귀 + AI fit/promotion 분기
+- 마이그레이션 verify — fresh DB + 기존 DB 두 시나리오에서 default notebook 생성 + archived 정리
+- dogfood — 2-3 일 후 (1) 사이드바 열려있는 비율, (2) notebook 갯수 (수동 vs promoted), (3) notebook 간 메모 이동 빈도, (4) promotion 수락률 측정
+
+---
+
+## 15. 작업 분해 (writing-plans 입력)
+
+1. **m008 마이그레이션** — notebooks 테이블 + notes.notebook_id + archived 정리 + status enum
+2. **NotebookRepository** + IPC 핸들러
+3. **NoteRepository** 변경 — notebook_id 필터, list/search/counts 옵션 확장
+4. **store** — notebooks state + actions + promotionCandidate state
+5. **AI prompt 변경** — buildPrompt 에 notebooks 목록 주입, schema 의 notebook_match 필드, AiWorker 가 응답 매치하여 자동 배치 (또는 default 로 coerce)
+6. **promotion 분석** — NoteRepository.findPromotionCandidates 쿼리 + store action (inbox open 시 lazy)
+7. **PromotionBanner UI** — Inbox 상단, 수락 modal, 24h snooze, 영구 dismiss
+8. **사이드바 UI** — Sidebar.tsx + NotebookList + NotebookCreateModal
+9. **헤더 / MoveStatusModal** — archived 제거
+10. **search** — scope 옵션 통합
+11. **sync (옵션 deferred)** — frontmatter notebook 필드. v0.4 본체 머지 후 별도 작업으로 가능
+12. **CHANGELOG + release notes** — dogfood 근거 명시

package.json

@@ -1,6 +1,6 @@
 {
   "name": "inkling",
-  "version": "0.3.14",
+  "version": "0.4.0",
   "private": true,
   "description": "Inkling — local-first 한 줄 보관 도구",
   "author": "altair823 <dlsrks0734@gmail.com>",

src/main/ai/AiWorker.ts

@@ -1,5 +1,6 @@
 import { readFile } from 'node:fs/promises';
 import type { NoteRepository } from '../repository/NoteRepository.js';
+import type { NotebookRepository } from '../repository/NotebookRepository.js';
 import type { Note } from '@shared/types';
 import type { AiFailedReason } from '../services/telemetryEvents.js';
 import type { SettingsService } from '../services/SettingsService.js';
@@ -48,6 +49,8 @@ export interface AiWorkerOptions {
   settings?: Pick<SettingsService, 'getVisionModel'>;
   /** v0.3.1 Cut F — 첨부 이미지 절대경로 변환. settings 와 함께 전달 시 vision 활성. */
   mediaStore?: Pick<MediaStore, 'absolutePath'>;
+  /** v0.4 — AI 응답의 notebook_match 처리용. 미전달 시 notebook 매칭 skip. */
+  notebookRepo?: Pick<NotebookRepository, 'list' | 'findByName' | 'moveNote'>;
 }
 
 interface Job { noteId: string; attempts: number; }
@@ -65,6 +68,7 @@ export class AiWorker {
   private telemetry?: AiTelemetryEmitter;
   private settings?: Pick<SettingsService, 'getVisionModel'>;
   private mediaStore?: Pick<MediaStore, 'absolutePath'>;
+  private notebookRepo?: Pick<NotebookRepository, 'list' | 'findByName' | 'moveNote'>;
 
   constructor(
     private repo: NoteRepository,
@@ -79,6 +83,7 @@ export class AiWorker {
     this.telemetry = opts.telemetry;
     this.settings = opts.settings;
     this.mediaStore = opts.mediaStore;
+    this.notebookRepo = opts.notebookRepo;
   }
 
   async enqueue(noteId: string): Promise<void> {
@@ -183,8 +188,9 @@ export class AiWorker {
             })
           );
         }
+        const notebookNames = this.notebookRepo ? this.notebookRepo.list().map((nb) => nb.name) : [];
         const res = await this.holder.get().generate(
-          { text: note.rawText, images, todayKst: todayIso, dueDateCandidates: candidates, vocab },
+          { text: note.rawText, images, todayKst: todayIso, dueDateCandidates: candidates, vocab, notebooks: notebookNames },
           { visionModel: visionModel ?? undefined }
         );
         // AI primary: AI's dueDate is final (no rule merge)
@@ -195,6 +201,16 @@ export class AiWorker {
           provider: this.holder.get().name,
           dueDate: res.dueDate ?? null
         });
+        // AI 의 notebook_match 가 valid 이름이면 자동 이동.
+        if (res.notebookMatch && this.notebookRepo) {
+          const nb = this.notebookRepo.findByName(res.notebookMatch);
+          if (nb) {
+            this.notebookRepo.moveNote(job.noteId, nb.id);
+            this.logger.info('ai.notebook.match', { noteId: job.noteId, notebook: nb.name });
+          } else {
+            this.logger.info('ai.notebook.miss', { noteId: job.noteId, attempted: res.notebookMatch });
+          }
+        }
         this.unreachableBackoffStep = 0;  // 성공 시 step reset
         this.logger.info('ai.done', {
           noteId: job.noteId,

src/main/ai/InferenceProvider.ts

@@ -8,6 +8,7 @@ export interface GenerateInput {
   vocab?: string[]; // v0.2.3 #3 — top-N kebab-case 태그. 미전달 시 빈 배열로 처리.
   // v0.3.1 Cut F — 첨부 이미지. 미전달 시 텍스트 전용 처리.
   images?: Array<{ base64: string; mime: string }>;
+  notebooks?: string[]; // v0.4 Task 8 — 사용 가능한 노트북 목록. 미전달 시 빈 배열로 처리.
 }
 
 export interface GenerateOptions {

src/main/ai/LocalOllamaProvider.ts

@@ -67,7 +67,7 @@ export class LocalOllamaProvider implements InferenceProvider {
     const model = useVision ? opts!.visionModel! : this.model;
     const prompt = useVision
       ? buildVisionPrompt(input.text, input.todayKst, input.dueDateCandidates.map((c) => c.iso ?? c.matchedToken ?? ''), input.vocab ?? [])
-      : buildPrompt(input.text, input.todayKst, input.dueDateCandidates, input.vocab ?? []);
+      : buildPrompt(input.text, input.todayKst, input.dueDateCandidates, input.vocab ?? [], input.notebooks ?? []);
 
     // v0.3.13 — vision model 은 cold-start (모델 load + 이미지 encoding) 가 매우 느려
     // 120s 기본 timeout 으로 첫 호출 fail 빈번. gemma4:26b (MoE 25B) 같은 대형 vision

src/main/ai/batchClassify.ts

@@ -0,0 +1,178 @@
+/**
+ * v0.4 T4 — default notebook 의 active 노트들을 단일 AI prompt 로 일괄 분류.
+ * N notes × 1 call 대신 한 번에 묶어 호출한다.
+ *
+ * Top N cap: 50 (prompt 크기 제한).
+ */
+
+import { z } from 'zod';
+import type { NoteRepository } from '../repository/NoteRepository.js';
+import type { NotebookRepository } from '../repository/NotebookRepository.js';
+
+export interface BatchClassifyResult {
+  assignments: Array<{ noteId: string; notebookId: string | null; notebookName: string | null }>;
+  skippedReason?: string;
+}
+
+export interface BatchClassifyDeps {
+  noteRepo: NoteRepository;
+  notebookRepo: NotebookRepository;
+  provider: { generateRaw: (prompt: string) => Promise<string> };
+}
+
+/** 한 번에 전달할 노트 최대 개수. prompt 크기 제한 대응. */
+const TOP_N_CAP = 50;
+
+// ---------------------------------------------------------------------------
+// Zod schema for AI response
+// ---------------------------------------------------------------------------
+
+const AssignmentSchema = z.object({
+  id: z.string(),
+  notebook: z.string().nullable()
+});
+
+const BatchResponseSchema = z.object({
+  assignments: z.array(AssignmentSchema)
+});
+
+// ---------------------------------------------------------------------------
+// Prompt builder
+// ---------------------------------------------------------------------------
+
+/**
+ * 한국어 batch 분류 prompt.
+ * 기존 buildPrompt 와 별도 함수 — 개별 메타데이터 생성이 아니라 batch 분류 전용.
+ */
+export function buildBatchClassifyPrompt(
+  notes: Array<{ id: string; snippet: string }>,
+  notebookNames: string[]
+): string {
+  const notebookList = notebookNames.join(', ');
+  const noteLines = notes
+    .map((n) => `- ${n.id}: "${n.snippet}"`)
+    .join('\n');
+
+  return `당신은 노트를 노트북으로 정리하는 AI 어시스턴트입니다. \
+아래 노트 목록과 사용 가능한 노트북 목록을 보고 각 노트가 어느 노트북에 가장 잘 맞는지 추천해주세요. \
+명확히 속하지 않으면 null 을 반환하세요.
+
+사용 가능한 노트북: ${notebookList}
+
+노트 목록 (id 와 짧은 제목/내용):
+${noteLines}
+
+규칙:
+- "assignments" 배열을 포함한 JSON 객체만 반환하세요.
+- 각 assignment 의 id 는 입력 id 와 정확히 일치해야 합니다.
+- notebook 은 위 사용 가능한 노트북 목록 중 하나 (대소문자 무관) 또는 null 이어야 합니다.
+- 새 노트북 이름을 만들지 마세요.
+- 마크다운 코드펜스나 설명 없이 JSON 만 반환하세요.
+
+예시:
+{"assignments": [{"id": "N1", "notebook": "회사"}, {"id": "N2", "notebook": null}]}`;
+}
+
+// ---------------------------------------------------------------------------
+// loose JSON extract (classifyStatus 와 동일한 패턴)
+// ---------------------------------------------------------------------------
+
+function parseJsonLoose(raw: string): unknown {
+  try { return JSON.parse(raw); } catch { /* fallback below */ }
+  const first = raw.indexOf('{');
+  const last = raw.lastIndexOf('}');
+  if (first >= 0 && last > first) {
+    const slice = raw.slice(first, last + 1);
+    try { return JSON.parse(slice); } catch { /* fall through */ }
+  }
+  return null;
+}
+
+// ---------------------------------------------------------------------------
+// Main service function
+// ---------------------------------------------------------------------------
+
+export async function batchClassifyDefault(deps: BatchClassifyDeps): Promise<BatchClassifyResult> {
+  const { noteRepo, notebookRepo, provider } = deps;
+
+  // 1. default notebook 조회
+  const defaultNb = notebookRepo.getDefault();
+  if (!defaultNb) {
+    return { assignments: [], skippedReason: 'no_default_notebook' };
+  }
+
+  // 2. 다른 notebook 목록 (default 제외) — 후보 notebook
+  const allNotebooks = notebookRepo.list();
+  const otherNotebooks = allNotebooks.filter((nb) => nb.id !== defaultNb.id);
+  if (otherNotebooks.length === 0) {
+    return { assignments: [], skippedReason: 'no_other_notebooks' };
+  }
+
+  // 3. default notebook 의 active 노트 조회 (cap 적용)
+  const notes = noteRepo.listByStatus('active', { notebookId: defaultNb.id, limit: TOP_N_CAP });
+  if (notes.length === 0) {
+    return { assignments: [], skippedReason: 'no_notes' };
+  }
+
+  // 4. 노트 snippet 생성 — aiTitle 우선, 없으면 rawText 앞 50자
+  const noteSnippets = notes.map((n) => ({
+    id: n.id,
+    snippet: (n.aiTitle ?? n.rawText).slice(0, 50)
+  }));
+
+  // 5. prompt 구성
+  const notebookNames = otherNotebooks.map((nb) => nb.name);
+  const prompt = buildBatchClassifyPrompt(noteSnippets, notebookNames);
+
+  // 6. AI 호출
+  let rawJson: string;
+  try {
+    rawJson = await provider.generateRaw(prompt);
+  } catch {
+    return { assignments: [], skippedReason: 'ai_error' };
+  }
+
+  // 7. JSON parse
+  const parsed = parseJsonLoose(rawJson);
+  if (parsed === null) {
+    return { assignments: [], skippedReason: 'parse_error' };
+  }
+
+  // 8. Zod validate
+  const validated = BatchResponseSchema.safeParse(parsed);
+  if (!validated.success) {
+    return { assignments: [], skippedReason: 'parse_error' };
+  }
+
+  // 9. 응답 매핑
+  const inputIds = new Set(notes.map((n) => n.id));
+  const assignments: BatchClassifyResult['assignments'] = [];
+
+  for (const item of validated.data.assignments) {
+    // input list 에 없는 id 는 skip
+    if (!inputIds.has(item.id)) continue;
+
+    if (item.notebook === null) {
+      assignments.push({ noteId: item.id, notebookId: null, notebookName: null });
+      continue;
+    }
+
+    // notebook name → NotebookRepository.findByName (case-insensitive)
+    const matched = notebookRepo.findByName(item.notebook);
+    if (!matched) {
+      // hallucinate 된 이름 — null 로 처리 (skip 대신 null 매핑으로 결과에는 포함)
+      assignments.push({ noteId: item.id, notebookId: null, notebookName: null });
+      continue;
+    }
+
+    // default notebook 으로 매핑된 경우는 null 처리 (이미 default 에 있음)
+    if (matched.id === defaultNb.id) {
+      assignments.push({ noteId: item.id, notebookId: null, notebookName: null });
+      continue;
+    }
+
+    assignments.push({ noteId: item.id, notebookId: matched.id, notebookName: matched.name });
+  }
+
+  return { assignments };
+}

src/main/ai/classifyStatus.ts

@@ -13,15 +13,16 @@ export interface ClassifyStatusOutput {
   rationale: string;
 }
 
-const VALID: readonly NoteStatus[] = ['completed', 'archived', 'trashed'];
+// v0.4 Task 16 — 'archived' 제거. completed / trashed 만 유효 추천값.
+// AI 응답이 'archived' 를 반환해도 VALID 에 없으므로 FALLBACK(completed) 로 coerce됨.
+const VALID: readonly NoteStatus[] = ['completed', 'trashed'];
 
 const PROMPT_TEMPLATE = `다음 메모를 분류하세요.
 가능한 status:
 - completed: 작업이 끝났고 더 이상 행동 불필요
-- archived: 장기 보관 — 회수 가능, 지금은 보지 않음
 - trashed: 불필요, 의미 없는 메모
 
-JSON 출력만 하세요: { "recommended": "completed|archived|trashed", "rationale": "<한 문장 한국어>" }
+JSON 출력만 하세요: { "recommended": "completed|trashed", "rationale": "<한 문장 한국어>" }
 
 메모 본문:
 {{rawText}}
@@ -32,17 +33,18 @@ JSON 출력만 하세요: { "recommended": "completed|archived|trashed", "ration
 사용자 이동 사유:
 {{reason}}`;
 
+// v0.4 Task 16 — fallback 을 'completed' 로 변경 ('archived' 제거).
 const FALLBACK: ClassifyStatusOutput = {
-  recommended: 'archived',
-  rationale: '판단 실패 — 안전하게 보관 추천'
+  recommended: 'completed',
+  rationale: '판단 실패 — 완료 처리 추천'
 };
 
 /**
  * v0.2.9 Cut B Task 9 — AI 자동 분류 (status 추천).
  *
  * provider.generateRaw 가 있으면 raw JSON 응답 사용, 없으면 generate() 재사용 시도
- * (그 경우 응답 형태 불일치로 보통 fallback). 에러/parse 실패 시 'archived' 안전 default
- * (사용자 데이터 보존 우선).
+ * (그 경우 응답 형태 불일치로 보통 fallback). 에러/parse 실패 시 'completed' fallback
+ * (v0.4 Task 16 — 'archived' 제거, 안전 default 를 completed 로 변경).
  */
 export async function classifyStatus(
   input: ClassifyStatusInput

src/main/ai/prompt.ts

@@ -6,7 +6,8 @@ export function buildPrompt(
   rawText: string,
   todayKst: string,
   candidates: ParseResult[] = [],
-  vocab: string[] = []
+  vocab: string[] = [],
+  notebooks: string[] = []
 ): string {
   const candidateBlock = candidates.length > 0
     ? `\nDate candidates extracted by a Korean rule parser (these are HINTS — you decide which is correct, or pick null):
@@ -17,11 +18,19 @@ ${candidates.map((c, i) => `  ${i + 1}. ${c.iso ?? '(ambiguous)'} — matched to
     ? `\nExisting vocabulary tags (most-used first): ${vocab.join(', ')}\nPrefer reusing a vocabulary tag when the meaning matches; create new tags only when the meaning is genuinely new.\n`
     : '';
 
-  // candidateBlock & vocabBlock are self-delimited with leading/trailing \n
+  const notebookBlock = notebooks.length > 0
+    ? `\n사용 가능한 노트북: ${notebooks.join(', ')}\n이 노트가 위 노트북 중 하나에 명확히 속하면 "notebook_match" 에 그 이름을, 그렇지 않으면 null 을 반환. 기존 목록 안에서만 선택 — 새 이름 만들지 말 것.\n`
+    : '';
+
+  const notebookKeySpec = notebooks.length > 0
+    ? `\n- "notebook_match": 위 사용 가능한 노트북 목록 중 하나의 이름 또는 null`
+    : '';
+
+  // candidateBlock & vocabBlock & notebookBlock are self-delimited with leading/trailing \n
   return `You organize raw personal notes into structured metadata.
 
 Today's date in Korea Standard Time (KST): ${todayKst}
-${candidateBlock}${vocabBlock}
+${candidateBlock}${vocabBlock}${notebookBlock}
 Input note (raw text, may be fragmented, any language):
 ---
 ${rawText}
@@ -31,7 +40,7 @@ Return a JSON object with EXACTLY these keys:
 - "title": concise title in KOREAN (max 60 chars)
 - "summary": 3-line summary in KOREAN. Each line max 120 chars. Lines separated by "\\n".
 - "tags": array of 0 to 3 tags in lowercase kebab-case (English letters and digits only, e.g., "api-timeout", "weekly-retro"). Empty array if no clear tags.
-- "due_date": ISO YYYY-MM-DD if you are CONFIDENT about a deadline, else null. Consider rule candidates above as hints but use your own judgment — if multiple ambiguous candidates ("내일 모레", "이번 주 다음 주"), prefer null. If the user wrote "오늘 PR 리뷰" with no deadline implication, return null.
+- "due_date": ISO YYYY-MM-DD if you are CONFIDENT about a deadline, else null. Consider rule candidates above as hints but use your own judgment — if multiple ambiguous candidates ("내일 모레", "이번 주 다음 주"), prefer null. If the user wrote "오늘 PR 리뷰" with no deadline implication, return null.${notebookKeySpec}
 
 Rules:
 - title and summary MUST be written in Korean regardless of input language.

src/main/ai/schema.ts

@@ -8,7 +8,8 @@ const RawResponseSchema = z.object({
   title: z.string().trim().min(1).max(200),
   summary: z.string().min(1),
   tags: z.array(z.string()).default([]),
-  due_date: z.string().regex(ISO_DATE_REGEX).nullable().optional()
+  due_date: z.string().regex(ISO_DATE_REGEX).nullable().optional(),
+  notebook_match: z.string().nullable().optional()
 });
 
 export interface AiResponse {
@@ -16,6 +17,7 @@ export interface AiResponse {
   summary: string;
   tags: string[];
   dueDate: string | null;
+  notebookMatch: string | null;
 }
 
 function normalizeSummary(raw: string): string {
@@ -69,6 +71,7 @@ export function parseAiResponse(raw: unknown): AiResponse {
     title: finalTitle.slice(0, 60),
     summary: normalizeSummary(parsed.summary),
     tags: parsed.tags.filter((t) => KEBAB_REGEX.test(t)).slice(0, 3),
-    dueDate: validateDueDate(parsed.due_date)
+    dueDate: validateDueDate(parsed.due_date),
+    notebookMatch: parsed.notebook_match ?? null
   };
 }

src/main/db/migrations/index.ts

@@ -6,8 +6,10 @@ import * as m004 from './m004_status.js';
 import * as m005 from './m005_ai_disabled.js';
 import * as m006 from './m006_revisions.js';
 import * as m007 from './m007_fts.js';
+import * as m008 from './m008_notebooks.js';
+import * as m009 from './m009_notebook_order.js';
 
-const migrations = [m001, m002, m003, m004, m005, m006, m007];
+const migrations = [m001, m002, m003, m004, m005, m006, m007, m008, m009];
 
 export function latestVersion(): number {
   return migrations[migrations.length - 1]!.version;

src/main/db/migrations/m008_notebooks.ts

@@ -0,0 +1,37 @@
+// v8: notebooks 테이블 + notes.notebook_id (FK) + archived → completed 정리.
+// CHECK 제약 없는 status 컬럼이라 SQL 변경은 데이터 정리만, enum 단속은 TypeScript 측에서.
+import type Database from 'better-sqlite3';
+import { v7 as uuidv7 } from 'uuid';
+
+export const version = 8;
+
+const DEFAULT_NOTEBOOK_NAME = '기본';
+
+export function up(db: Database.Database): void {
+  const now = new Date().toISOString();
+  const defaultId = uuidv7();
+
+  db.exec(`
+    CREATE TABLE notebooks (
+      id         TEXT PRIMARY KEY,
+      name       TEXT NOT NULL,
+      color      TEXT,
+      created_at TEXT NOT NULL,
+      updated_at TEXT NOT NULL
+    );
+    CREATE UNIQUE INDEX idx_notebooks_name ON notebooks(name COLLATE NOCASE);
+
+    ALTER TABLE notes ADD COLUMN notebook_id TEXT
+      REFERENCES notebooks(id) ON DELETE RESTRICT;
+    CREATE INDEX idx_notes_notebook_id ON notes(notebook_id);
+  `);
+
+  db.prepare(
+    `INSERT INTO notebooks (id, name, created_at, updated_at) VALUES (?, ?, ?, ?)`
+  ).run(defaultId, DEFAULT_NOTEBOOK_NAME, now, now);
+
+  db.prepare(`UPDATE notes SET notebook_id = ? WHERE notebook_id IS NULL`).run(defaultId);
+
+  // archived 잔류 (dogfood 0건 확인됐지만 defensive) → completed 로 통합.
+  db.prepare(`UPDATE notes SET status='completed' WHERE status='archived'`).run();
+}

src/main/db/migrations/m009_notebook_order.ts

@@ -0,0 +1,17 @@
+// v9: notebooks.sort_order 컬럼 추가 + 기존 notebooks 를 created_at 순서로 backfill.
+// NotebookList 사이드바 의 순서 변경 (T2/T3) 의 schema 기반.
+import type Database from 'better-sqlite3';
+
+export const version = 9;
+
+export function up(db: Database.Database): void {
+  db.exec(`
+    ALTER TABLE notebooks ADD COLUMN sort_order INTEGER NOT NULL DEFAULT 0;
+    CREATE INDEX idx_notebooks_sort_order ON notebooks(sort_order, created_at);
+  `);
+
+  // 기존 notebooks 를 created_at 순서로 0,1,2,... 채움
+  const rows = db.prepare(`SELECT id FROM notebooks ORDER BY created_at ASC, id ASC`).all() as Array<{ id: string }>;
+  const update = db.prepare(`UPDATE notebooks SET sort_order = ? WHERE id = ?`);
+  rows.forEach((r, idx) => update.run(idx, r.id));
+}

src/main/index.ts

@@ -21,6 +21,8 @@ import { refreshVisionCache } from './services/VisionDetect.js';
 import { registerCaptureApi } from './ipc/captureApi.js';
 import { registerInboxApi, pushNoteUpdated, pushOllamaStatus } from './ipc/inboxApi.js';
 import { registerSettingsApi, navigateInbox } from './ipc/settingsApi.js';
+import { NotebookRepository } from './repository/NotebookRepository.js';
+import { registerNotebookApi } from './ipc/notebookApi.js';
 import { createInboxWindow, getInboxWindow } from './windows/inboxWindow.js';
 import {
   createQuickCaptureWindow, showQuickCapture, getQuickCaptureWindow
@@ -101,6 +103,8 @@ app.whenReady().then(async () => {
   }
   const db = openDb(paths.dbFile);
   const repo = new NoteRepository(db);
+  const notebookRepo = new NotebookRepository(db);
+  registerNotebookApi({ repo: notebookRepo });
   const store = new MediaStore(paths.profileDir);
   const continuity = new ContinuityService(db);
   const intent = new IntentService(repo);
@@ -158,7 +162,9 @@ app.whenReady().then(async () => {
     telemetry,
     // v0.3.1 Cut F — vision 지원
     settings: settingsSvc,
-    mediaStore: store
+    mediaStore: store,
+    // v0.4 — notebook_match 자동 이동
+    notebookRepo: notebookRepo
   });
 
   const notify = new NotificationService({
@@ -181,7 +187,9 @@ app.whenReady().then(async () => {
     getInboxWindow, settings: settingsSvc, providerHolder,
     paths: { profileDir: paths.profileDir },
     // v0.2.9 Cut B Task 16 — disabled 메모 일괄 재투입 시 in-memory queue 갱신.
-    enqueue: (id) => worker.enqueue(id)
+    enqueue: (id) => worker.enqueue(id),
+    // v0.4 Task 11 — promotion candidates IPC 가 default notebook 식별에 사용.
+    notebookRepo
   });
   // registerSettingsApi 는 backup / exportSvc / importSvc / syncSvc / telemetry 가
   // 생성된 뒤에 호출 (Task 10) — 아래 BackupService/ExportService/... 초기화 직후로 이동.

src/main/ipc/inboxApi.ts

@@ -3,6 +3,7 @@ import type { BrowserWindow } from 'electron';
 const { ipcMain, dialog, shell } = electron;
 import { join, normalize, sep } from 'node:path';
 import type { NoteRepository } from '../repository/NoteRepository.js';
+import type { NotebookRepository } from '../repository/NotebookRepository.js';
 import type { ContinuityService } from '../services/ContinuityService.js';
 import type { CaptureService } from '../services/CaptureService.js';
 import type { HealthChecker } from '../services/HealthChecker.js';
@@ -11,6 +12,7 @@ import type { Note, NoteStatus } from '@shared/types';
 import type { HealthResult } from '../ai/InferenceProvider.js';
 import { LocalOllamaProvider } from '../ai/LocalOllamaProvider.js';
 import { classifyStatus } from '../ai/classifyStatus.js';
+import { batchClassifyDefault } from '../ai/batchClassify.js';
 import type { SettingsService } from '../services/SettingsService.js';
 import type { ProviderHolder } from '../ai/ProviderHolder.js';
 
@@ -29,10 +31,13 @@ export interface InboxIpcDeps {
   // 미주입 시 fire-and-forget skip (다음 launch 의 loadFromDb 가 처리). 본 hook 은
   // AiWorker 인스턴스 직접 주입을 피해 IPC 모듈이 worker import 를 갖지 않도록 분리.
   enqueue?: (noteId: string) => Promise<void>;
+  // v0.4 Task 11 — promotion candidates IPC 가 default notebook 식별에 사용.
+  // 미주입 시 list-promotion-candidates 는 빈 배열 반환 (graceful fallback).
+  notebookRepo?: NotebookRepository;
 }
 
 export function registerInboxApi(deps: InboxIpcDeps): void {
-  ipcMain.handle('inbox:list', (_e, opts: { limit: number; cursor?: string }) =>
+  ipcMain.handle('inbox:list', (_e, opts: { limit: number; cursor?: string; notebookId?: string }) =>
     deps.repo.list(opts)
   );
 
@@ -197,21 +202,24 @@ export function registerInboxApi(deps: InboxIpcDeps): void {
   });
 
   // v0.2.9 Cut B Task 4 — status 별 노트 목록.
+  // v0.4 — notebookId 옵션 추가. archived 는 v0.4 에서 제거된 status — graceful fallback.
   ipcMain.handle(
     'inbox:list-by-status',
-    (_e, status: NoteStatus, opts: { limit?: number } = {}) => {
-      const VALID: readonly NoteStatus[] = ['active', 'completed', 'archived', 'trashed'];
+    (_e, status: NoteStatus, opts: { limit?: number; notebookId?: string } = {}) => {
+      // archived 는 v0.4 에서 completed 로 통합 — 빈 결과로 graceful fallback (caller 안전).
+      if ((status as string) === 'archived') return [] as Note[];
+      const VALID: readonly NoteStatus[] = ['active', 'completed', 'trashed'];
       if (!VALID.includes(status)) return [] as Note[];
       return deps.repo.listByStatus(status, opts);
     }
   );
 
-  // v0.2.9 Cut B Task 4 — 4 status counts (헤더 4탭 badge).
-  ipcMain.handle('inbox:counts-by-status', () => ({
-    active: deps.repo.countByStatus('active'),
-    completed: deps.repo.countByStatus('completed'),
-    archived: deps.repo.countByStatus('archived'),
-    trashed: deps.repo.countByStatus('trashed')
+  // v0.2.9 Cut B Task 4 — status counts (헤더 탭 badge).
+  // v0.4 — archived 제거 (3 status 만 반환). notebookId 옵션 추가.
+  ipcMain.handle('inbox:counts-by-status', (_e, opts: { notebookId?: string } = {}) => ({
+    active: deps.repo.countByStatus('active', opts),
+    completed: deps.repo.countByStatus('completed', opts),
+    trashed: deps.repo.countByStatus('trashed', opts)
   }));
 
   // v0.2.9 Cut B Task 8 — status 4분기 직접 전이 (사유 포함).
@@ -223,7 +231,7 @@ export function registerInboxApi(deps: InboxIpcDeps): void {
   ipcMain.handle(
     'inbox:set-status',
     async (_e, id: string, status: NoteStatus, reason: string | null) => {
-      const VALID: readonly NoteStatus[] = ['active', 'completed', 'archived', 'trashed'];
+      const VALID: readonly NoteStatus[] = ['active', 'completed', 'trashed'];
       if (!VALID.includes(status)) {
         return { ok: false as const, reason: 'invalid status' as const };
       }
@@ -235,14 +243,14 @@ export function registerInboxApi(deps: InboxIpcDeps): void {
   );
 
   // v0.2.9 Cut B Task 9 — AI 자동 분류 (status 추천).
-  // Ollama provider.generateRaw 호출 + JSON 응답 파싱. 에러/실패 시 archived fallback
-  // (사용자 데이터 보존 우선). 자세한 prompt + parse 로직은 src/main/ai/classifyStatus.ts.
+  // Ollama provider.generateRaw 호출 + JSON 응답 파싱. 에러/실패 시 completed fallback
+  // (v0.4 Task 16 — 'archived' 제거). 자세한 prompt + parse 로직은 src/main/ai/classifyStatus.ts.
   ipcMain.handle('ai:classify-status', async (_e, id: string, reason: string) => {
     const note = deps.repo.findById(id);
     if (note === null) {
       return {
-        recommended: 'archived' as const,
-        rationale: '메모를 찾을 수 없음 — 안전하게 보관 추천'
+        recommended: 'completed' as const,
+        rationale: '메모를 찾을 수 없음 — 완료 처리 추천'
       };
     }
     const provider = deps.providerHolder.get();
@@ -254,6 +262,20 @@ export function registerInboxApi(deps: InboxIpcDeps): void {
     });
   });
 
+  // v0.4 T4 — AI batch classify: default notebook 노트 일괄 fit 매칭 (단일 prompt).
+  ipcMain.handle('inbox:batch-classify-default', async () => {
+    if (!deps.notebookRepo) return { assignments: [], skippedReason: 'no_notebook_repo' };
+    const provider = deps.providerHolder.get();
+    if (typeof provider.generateRaw !== 'function') {
+      return { assignments: [], skippedReason: 'no_generate_raw' };
+    }
+    return batchClassifyDefault({
+      noteRepo: deps.repo,
+      notebookRepo: deps.notebookRepo,
+      provider: provider as { generateRaw: (prompt: string) => Promise<string> }
+    });
+  });
+
   // v0.2.9 Cut B Task 16 — disabled 메모 (ai_enabled OFF 시기 캡처) 일괄 재투입.
   // OFF→ON 전환 후 사용자가 "지금 모두 처리" 버튼 클릭 path. repo.requeueDisabled 가
   // ai_status='pending' + pending_jobs row 보장, worker.enqueue 가 in-memory queue 갱신.
@@ -277,6 +299,30 @@ export function registerInboxApi(deps: InboxIpcDeps): void {
 
   ipcMain.handle('inbox:get-disabled-count', () => deps.repo.countByAiStatus('disabled'));
 
+  // v0.4 Task 11 — promotion candidates + dismissed/snoozed 영속화.
+  ipcMain.handle('inbox:list-promotion-candidates', () => {
+    if (!deps.notebookRepo) return [];
+    const defaultNb = deps.notebookRepo.getDefault();
+    if (!defaultNb) return [];
+    return deps.repo.findPromotionCandidates(defaultNb.id);
+  });
+
+  ipcMain.handle('inbox:get-promotion-dismissed-tags', () =>
+    deps.settings.getPromotionDismissedTags()
+  );
+
+  ipcMain.handle('inbox:add-promotion-dismissed-tag', (_e, tag: string) =>
+    deps.settings.addPromotionDismissedTag(tag)
+  );
+
+  ipcMain.handle('inbox:get-promotion-snoozed-until', () =>
+    deps.settings.getPromotionSnoozeUntil()
+  );
+
+  ipcMain.handle('inbox:set-promotion-snoozed-until', (_e, ms: number) =>
+    deps.settings.setPromotionSnoozeUntil(ms)
+  );
+
   ipcMain.handle('inbox:saveOllamaSettings', async (_e, value: { endpoint: string; model: string }) => {
     // 검증: 새 인스턴스로 healthCheck
     const trial = new LocalOllamaProvider({ endpoint: value.endpoint, model: value.model });
@@ -320,9 +366,10 @@ export function registerInboxApi(deps: InboxIpcDeps): void {
   });
 
   // v0.2.11 Cut D — FTS5 검색 + 회고 aggregate.
+  // v0.4 — notebookId 옵션 추가.
   ipcMain.handle(
     'inbox:search',
-    (_e, query: string, opts: { limit?: number; status?: NoteStatus } = {}) =>
+    (_e, query: string, opts: { limit?: number; status?: NoteStatus; notebookId?: string } = {}) =>
       deps.repo.search(query, opts)
   );
 

src/main/ipc/notebookApi.ts

@@ -0,0 +1,53 @@
+import electron from 'electron';
+const { ipcMain } = electron;
+import type { NotebookRepository } from '../repository/NotebookRepository.js';
+
+export interface NotebookIpcDeps {
+  repo: NotebookRepository;
+}
+
+export function registerNotebookApi(deps: NotebookIpcDeps): void {
+  ipcMain.handle('notebook:list', () => deps.repo.list());
+
+  ipcMain.handle('notebook:create', (_e, input: { name: string; color?: string }) => {
+    if (!input.name || input.name.trim().length === 0) {
+      return { ok: false as const, reason: 'empty_name' };
+    }
+    try {
+      const nb = deps.repo.create({ name: input.name.trim(), color: input.color ?? null });
+      return { ok: true as const, notebook: nb };
+    } catch (e) {
+      const msg = (e as Error).message;
+      if (msg.includes('UNIQUE')) return { ok: false as const, reason: 'duplicate_name' };
+      return { ok: false as const, reason: msg };
+    }
+  });
+
+  ipcMain.handle('notebook:rename', (_e, id: string, name: string) => {
+    if (!name || name.trim().length === 0) {
+      return { ok: false as const, reason: 'empty_name' };
+    }
+    try {
+      deps.repo.rename(id, name.trim());
+      return { ok: true as const };
+    } catch (e) {
+      const msg = (e as Error).message;
+      if (msg.includes('UNIQUE')) return { ok: false as const, reason: 'duplicate_name' };
+      return { ok: false as const, reason: msg };
+    }
+  });
+
+  ipcMain.handle('notebook:set-color', (_e, id: string, color: string | null) => {
+    deps.repo.setColor(id, color);
+    return { ok: true as const };
+  });
+
+  ipcMain.handle('notebook:delete', (_e, id: string) => deps.repo.delete(id));
+
+  ipcMain.handle('notebook:move-note', (_e, noteId: string, notebookId: string) => {
+    deps.repo.moveNote(noteId, notebookId);
+    return { ok: true as const };
+  });
+
+  ipcMain.handle('notebook:reorder', (_e, id: string, direction: 'up' | 'down') => deps.repo.reorder(id, direction));
+}

src/main/ipc/settingsApi.ts

@@ -112,6 +112,17 @@ export function registerSettingsApi(deps?: SettingsIpcDeps): void {
     return { ok: true as const };
   });
 
+  // v0.4 — Sidebar UI state 영속화
+  ipcMain.handle('settings:set-sidebar-visible', async (_e, visible: boolean) => {
+    await settings.setSidebarVisible(visible);
+    return { ok: true as const };
+  });
+
+  ipcMain.handle('settings:set-sidebar-width', async (_e, width: number) => {
+    await settings.setSidebarWidth(width);
+    return { ok: true as const };
+  });
+
   ipcMain.handle('settings:set-sync-auto-enabled', async (_e, value: boolean) => {
     await deps.settings.setAutoSyncEnabled(value);
     await deps.syncTimer?.reconfigure();

src/main/repository/NoteRepository.ts

@@ -11,6 +11,10 @@ export interface CreateNoteInput {
    * 미지정 시 기존 'pending' default + pending_jobs enqueue (backward compat).
    */
   aiStatus?: AiStatus;
+  /**
+   * v0.4 — 미지정 시 가장 오래된 notebook (default notebook) 의 id 자동 사용.
+   */
+  notebookId?: string;
 }
 
 export interface NewMediaRow {
@@ -83,11 +87,12 @@ export class NoteRepository {
     const id = uuidv7();
     const ts = now.toISOString();
     const aiStatus: AiStatus = input.aiStatus ?? 'pending';
+    const notebookId = input.notebookId ?? this.getDefaultNotebookId();
     const tx = this.db.transaction(() => {
       this.db
-        .prepare(`INSERT INTO notes (id, raw_text, ai_status, created_at, updated_at)
-                  VALUES (?, ?, ?, ?, ?)`)
-        .run(id, input.rawText, aiStatus, ts, ts);
+        .prepare(`INSERT INTO notes (id, raw_text, ai_status, created_at, updated_at, notebook_id)
+                  VALUES (?, ?, ?, ?, ?, ?)`)
+        .run(id, input.rawText, aiStatus, ts, ts, notebookId);
       this.db
         .prepare(`INSERT INTO note_revisions (note_id, raw_text, edited_at, edited_by)
                   VALUES (?, ?, ?, 'capture')`)
@@ -104,6 +109,16 @@ export class NoteRepository {
     return { id };
   }
 
+  private getDefaultNotebookId(): string {
+    const r = this.db
+      .prepare(`SELECT id FROM notebooks ORDER BY created_at ASC LIMIT 1`)
+      .get() as { id: string } | undefined;
+    if (!r) {
+      throw new Error('No default notebook found — m008 migration may not have run');
+    }
+    return r.id;
+  }
+
   insertMedia(rows: NewMediaRow[]): void {
     if (rows.length === 0) return;
     const now = new Date().toISOString();
@@ -125,23 +140,15 @@ export class NoteRepository {
     return this.hydrate(row);
   }
 
-  list(opts: { limit: number; cursor?: string }): Note[] {
+  list(opts: { limit: number; cursor?: string; notebookId?: string }): Note[] {
     const limit = Math.max(1, Math.min(200, opts.limit));
-    const rows = opts.cursor
-      ? (this.db
-          .prepare(
-            `SELECT * FROM notes
-              WHERE deleted_at IS NULL AND created_at < ?
-              ORDER BY created_at DESC, id DESC LIMIT ?`
-          )
-          .all(opts.cursor, limit) as Record<string, unknown>[])
-      : (this.db
-          .prepare(
-            `SELECT * FROM notes
-              WHERE deleted_at IS NULL
-              ORDER BY created_at DESC, id DESC LIMIT ?`
-          )
-          .all(limit) as Record<string, unknown>[]);
+    const params: unknown[] = [];
+    let sql = `SELECT * FROM notes WHERE deleted_at IS NULL`;
+    if (opts.notebookId) { sql += ` AND notebook_id = ?`; params.push(opts.notebookId); }
+    if (opts.cursor) { sql += ` AND created_at < ?`; params.push(opts.cursor); }
+    sql += ` ORDER BY created_at DESC, id DESC LIMIT ?`;
+    params.push(limit);
+    const rows = this.db.prepare(sql).all(...params) as Record<string, unknown>[];
     return rows.map((r) => this.hydrate(r));
   }
 
@@ -663,48 +670,54 @@ export class NoteRepository {
   /**
    * v0.2.9 Cut B Task 4 — status 별 row count. 4탭 헤더 badge 용.
    * tags/media hydrate 없음 (cheap path, listByStatus 와 별도).
+   * v0.4 — notebookId 옵션 추가. 미지정 시 전체 notebook.
    */
-  countByStatus(status: NoteStatus): number {
-    const row = this.db
-      .prepare(`SELECT COUNT(*) AS c FROM notes WHERE status = ?`)
-      .get(status) as { c: number };
-    return row.c;
+  countByStatus(status: NoteStatus, opts: { notebookId?: string } = {}): number {
+    const params: unknown[] = [status];
+    let sql = `SELECT COUNT(*) AS c FROM notes WHERE status = ?`;
+    if (opts.notebookId) { sql += ` AND notebook_id = ?`; params.push(opts.notebookId); }
+    const r = this.db.prepare(sql).get(...params) as { c: number };
+    return r.c;
   }
 
   /**
    * v0.2.9 Cut B — status 별 노트 목록. status_changed_at DESC (최근 전이 우선),
    * NULL 은 created_at fallback. limit cap 200 (list/listTrashed 와 동일).
+   * v0.4 — notebookId 옵션 추가. 미지정 시 전체 notebook.
    */
-  listByStatus(status: NoteStatus, opts: { limit?: number } = {}): Note[] {
+  listByStatus(status: NoteStatus, opts: { limit?: number; notebookId?: string } = {}): Note[] {
     const limit = Math.max(1, Math.min(200, opts.limit ?? 200));
-    const rows = this.db
-      .prepare(
-        `SELECT * FROM notes
-          WHERE status = ?
-          ORDER BY COALESCE(status_changed_at, created_at) DESC, id DESC
-          LIMIT ?`
-      )
-      .all(status, limit) as Record<string, unknown>[];
+    const params: unknown[] = [status];
+    let sql = `SELECT * FROM notes WHERE status = ?`;
+    if (opts.notebookId) { sql += ` AND notebook_id = ?`; params.push(opts.notebookId); }
+    sql += ` ORDER BY COALESCE(status_changed_at, created_at) DESC, id DESC LIMIT ?`;
+    params.push(limit);
+    const rows = this.db.prepare(sql).all(...params) as Record<string, unknown>[];
     return rows.map((r) => this.hydrate(r));
   }
 
   /**
    * v0.2.11 Cut D — FTS5 검색. notes_fts MATCH + rank 정렬 + 기본 trashed 제외.
    * 빈/공백 query → []. multi-token 은 implicit AND. FTS5 special chars 는 sanitize.
+   * v0.4 — notebookId 옵션 추가. 미지정 시 전체 notebook.
    */
-  search(query: string, opts: { limit?: number; status?: NoteStatus } = {}): Note[] {
+  search(query: string, opts: { limit?: number; status?: NoteStatus; notebookId?: string } = {}): Note[] {
     const sanitized = sanitizeFtsQuery(query);
     if (sanitized.length === 0) return [];
     const limit = Math.max(1, Math.min(200, opts.limit ?? 50));
     const statusClause = opts.status ? `AND n.status = ?` : `AND n.status != 'trashed'`;
+    const notebookClause = opts.notebookId ? `AND n.notebook_id = ?` : ``;
     const sql = `
       SELECT n.* FROM notes n
       JOIN notes_fts f ON n.id = f.note_id
-      WHERE notes_fts MATCH ? ${statusClause}
+      WHERE notes_fts MATCH ? ${statusClause} ${notebookClause}
       ORDER BY rank
       LIMIT ?
     `;
-    const args: unknown[] = opts.status ? [sanitized, opts.status, limit] : [sanitized, limit];
+    const args: unknown[] = [sanitized];
+    if (opts.status) args.push(opts.status);
+    if (opts.notebookId) args.push(opts.notebookId);
+    args.push(limit);
     const rows = this.db.prepare(sql).all(...args) as Record<string, unknown>[];
     return rows.map((r) => this.hydrate(r));
   }
@@ -897,14 +910,15 @@ export class NoteRepository {
       finalId = uuidv7();
       status = 'forked';
     }
+    const notebookId = this.getDefaultNotebookId();
     const tx = this.db.transaction(() => {
       this.db
         .prepare(
           `INSERT INTO notes
              (id, raw_text, ai_title, ai_summary, ai_status, ai_provider, ai_generated_at,
               title_edited_by_user, summary_edited_by_user,
-              user_intent, intent_prompted_at, deleted_at, created_at, updated_at)
-           VALUES (?, ?, ?, ?, 'done', ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+              user_intent, intent_prompted_at, deleted_at, created_at, updated_at, notebook_id)
+           VALUES (?, ?, ?, ?, 'done', ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
         )
         .run(
           finalId,
@@ -919,7 +933,8 @@ export class NoteRepository {
           input.intentPromptedAt,
           input.deletedAt ?? null,
           input.createdAt,
-          input.updatedAt
+          input.updatedAt,
+          notebookId
         );
       this.db
         .prepare(
@@ -970,6 +985,7 @@ export class NoteRepository {
 
     if (!existing) {
       // INSERT path
+      const notebookId = this.getDefaultNotebookId();
       const tx = this.db.transaction(() => {
         this.db
           .prepare(
@@ -979,8 +995,8 @@ export class NoteRepository {
                 user_intent, intent_prompted_at,
                 created_at, updated_at,
                 due_date, due_date_edited_by_user,
-                status, status_changed_at, move_reason)
-             VALUES (?, ?, ?, ?, 'done', ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+                status, status_changed_at, move_reason, notebook_id)
+             VALUES (?, ?, ?, ?, 'done', ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
           )
           .run(
             input.id,
@@ -999,7 +1015,8 @@ export class NoteRepository {
             input.dueDateEditedByUser ? 1 : 0,
             input.status,
             input.statusChangedAt,
-            input.moveReason
+            input.moveReason,
+            notebookId
           );
         this.db
           .prepare(
@@ -1146,6 +1163,28 @@ export class NoteRepository {
     return rows.map((r) => this.hydrate(r));
   }
 
+  /**
+   * v0.4 Task 5 — default notebook 안 active 노트를 tag 기준으로 cluster 하여
+   * threshold 이상인 tag + noteIds 배열 반환. notebook 승격 제안 트리거용.
+   * completed/trashed/non-default-notebook 제외.
+   */
+  findPromotionCandidates(
+    defaultNotebookId: string,
+    threshold: number = 3
+  ): Array<{ tag: string; noteIds: string[] }> {
+    const rows = this.db.prepare(
+      `SELECT t.name AS tag, GROUP_CONCAT(n.id) AS ids, COUNT(DISTINCT n.id) AS cnt
+         FROM tags t
+         JOIN note_tags nt ON nt.tag_id = t.id
+         JOIN notes n ON n.id = nt.note_id
+        WHERE n.status = 'active'
+          AND n.notebook_id = ?
+        GROUP BY t.id
+       HAVING cnt >= ?`
+    ).all(defaultNotebookId, threshold) as Array<{ tag: string; ids: string; cnt: number }>;
+    return rows.map((r) => ({ tag: r.tag, noteIds: r.ids.split(',') }));
+  }
+
   getAllPendingJobs(): Array<{ noteId: string; attempts: number; nextRunAt: string }> {
     const rows = this.db
       .prepare(`SELECT note_id, attempts, next_run_at FROM pending_jobs`)
@@ -1223,7 +1262,8 @@ export class NoteRepository {
       createdAt: row.created_at as string,
       updatedAt: row.updated_at as string,
       tags: tags as NoteTag[],
-      media
+      media,
+      notebookId: row.notebook_id as string
     };
   }
 }

src/main/repository/NotebookRepository.ts

@@ -0,0 +1,123 @@
+import type Database from 'better-sqlite3';
+import { v7 as uuidv7 } from 'uuid';
+import type { Notebook } from '@shared/types';
+
+export class NotebookRepository {
+  constructor(private db: Database.Database) {}
+
+  list(): Notebook[] {
+    const rows = this.db.prepare(
+      `SELECT nb.id, nb.name, nb.color, nb.created_at, nb.updated_at,
+              (SELECT COUNT(*) FROM notes n
+                WHERE n.notebook_id = nb.id AND n.status = 'active') AS note_count
+         FROM notebooks nb
+        ORDER BY nb.sort_order ASC, nb.name ASC`
+    ).all() as Array<Record<string, unknown>>;
+    return rows.map((r) => this.hydrate(r));
+  }
+
+  findById(id: string): Notebook | null {
+    const r = this.db.prepare(
+      `SELECT nb.id, nb.name, nb.color, nb.created_at, nb.updated_at,
+              (SELECT COUNT(*) FROM notes n
+                WHERE n.notebook_id = nb.id AND n.status = 'active') AS note_count
+         FROM notebooks nb WHERE nb.id = ?`
+    ).get(id) as Record<string, unknown> | undefined;
+    return r ? this.hydrate(r) : null;
+  }
+
+  /** name 은 COLLATE NOCASE UNIQUE — case-insensitive 중복 거부. */
+  create(input: { name: string; color?: string | null }): Notebook {
+    const id = uuidv7();
+    const now = new Date().toISOString();
+    const maxRow = this.db.prepare(`SELECT COALESCE(MAX(sort_order), -1) AS m FROM notebooks`).get() as { m: number };
+    const sortOrder = maxRow.m + 1;
+    this.db.prepare(
+      `INSERT INTO notebooks(id, name, color, created_at, updated_at, sort_order) VALUES(?,?,?,?,?,?)`
+    ).run(id, input.name, input.color ?? null, now, now, sortOrder);
+    return { id, name: input.name, color: input.color ?? null, createdAt: now, updatedAt: now, noteCount: 0 };
+  }
+
+  reorder(id: string, direction: 'up' | 'down'): { ok: boolean } {
+    const cur = this.db.prepare(`SELECT sort_order FROM notebooks WHERE id = ?`).get(id) as { sort_order: number } | undefined;
+    if (!cur) return { ok: false };
+    const neighbor = direction === 'up'
+      ? this.db.prepare(`SELECT id, sort_order FROM notebooks WHERE sort_order < ? ORDER BY sort_order DESC LIMIT 1`).get(cur.sort_order)
+      : this.db.prepare(`SELECT id, sort_order FROM notebooks WHERE sort_order > ? ORDER BY sort_order ASC LIMIT 1`).get(cur.sort_order);
+    if (!neighbor) return { ok: false };  // 이미 끝
+    const n = neighbor as { id: string; sort_order: number };
+    const now = new Date().toISOString();
+    const tx = this.db.transaction(() => {
+      this.db.prepare(`UPDATE notebooks SET sort_order = ?, updated_at = ? WHERE id = ?`).run(n.sort_order, now, id);
+      this.db.prepare(`UPDATE notebooks SET sort_order = ?, updated_at = ? WHERE id = ?`).run(cur.sort_order, now, n.id);
+    });
+    tx();
+    return { ok: true };
+  }
+
+  rename(id: string, name: string): void {
+    const now = new Date().toISOString();
+    this.db.prepare(`UPDATE notebooks SET name=?, updated_at=? WHERE id=?`).run(name, now, id);
+  }
+
+  setColor(id: string, color: string | null): void {
+    const now = new Date().toISOString();
+    this.db.prepare(`UPDATE notebooks SET color=?, updated_at=? WHERE id=?`).run(color, now, id);
+  }
+
+  /** FK RESTRICT 가 메모 잔류 시 throw — ok:false 로 변환. */
+  delete(id: string): { ok: true } | { ok: false; reason: 'has_notes' | 'not_found' } {
+    const exists = this.db.prepare(`SELECT 1 FROM notebooks WHERE id=?`).get(id);
+    if (!exists) return { ok: false, reason: 'not_found' };
+    try {
+      this.db.prepare(`DELETE FROM notebooks WHERE id=?`).run(id);
+      return { ok: true };
+    } catch (e) {
+      const msg = (e as Error).message;
+      if (msg.includes('FOREIGN KEY')) return { ok: false, reason: 'has_notes' };
+      throw e;
+    }
+  }
+
+  /** name 으로 notebook 조회 (COLLATE NOCASE — case-insensitive). */
+  findByName(name: string): Notebook | null {
+    const r = this.db.prepare(
+      `SELECT nb.id, nb.name, nb.color, nb.created_at, nb.updated_at,
+              (SELECT COUNT(*) FROM notes n
+                WHERE n.notebook_id = nb.id AND n.status = 'active') AS note_count
+         FROM notebooks nb WHERE nb.name = ? COLLATE NOCASE`
+    ).get(name) as Record<string, unknown> | undefined;
+    return r ? this.hydrate(r) : null;
+  }
+
+  /**
+   * v0.4 Task 11 — 가장 오래된 (created_at ASC LIMIT 1) notebook = default.
+   * m008 마이그레이션이 기존 노트를 자동으로 이 notebook 에 할당.
+   */
+  getDefault(): Notebook | null {
+    const r = this.db.prepare(
+      `SELECT nb.id, nb.name, nb.color, nb.created_at, nb.updated_at,
+              (SELECT COUNT(*) FROM notes n
+                WHERE n.notebook_id = nb.id AND n.status = 'active') AS note_count
+         FROM notebooks nb ORDER BY nb.created_at ASC LIMIT 1`
+    ).get() as Record<string, unknown> | undefined;
+    return r ? this.hydrate(r) : null;
+  }
+
+  /** notes.notebook_id 갱신만 (status 등은 보존). */
+  moveNote(noteId: string, notebookId: string): void {
+    this.db.prepare(`UPDATE notes SET notebook_id=?, updated_at=? WHERE id=?`)
+      .run(notebookId, new Date().toISOString(), noteId);
+  }
+
+  private hydrate(r: Record<string, unknown>): Notebook {
+    return {
+      id: r.id as string,
+      name: r.name as string,
+      color: (r.color as string | null) ?? null,
+      createdAt: r.created_at as string,
+      updatedAt: r.updated_at as string,
+      noteCount: r.note_count as number
+    };
+  }
+}

src/main/services/ImportService.ts

@@ -150,7 +150,9 @@ export class ImportService {
         userIntent: parsed.userIntent,
         intentPromptedAt: parsed.intentPromptedAt,
         tags: parsed.tags,
-        status: parsed.status,
+        // v0.4 Task 16 — 'archived' 는 NoteStatus 에서 제거됨. 기존 내보내기 파일의
+        // status=archived 를 읽을 때 completed 로 coerce (m008 과 동일 정책).
+        status: parsed.status === 'archived' ? 'completed' : parsed.status,
         statusChangedAt: parsed.statusChangedAt,
         moveReason: parsed.moveReason,
         dueDate: parsed.dueDate,

src/main/services/SettingsService.ts

@@ -21,7 +21,12 @@ const SettingsSchema = z.object({
   // v0.3.1 Cut F
   vision_model: z.string().nullable().optional(),
   vision_capable_cache: z.array(z.string()).optional(),
-  vision_cache_at: z.string().optional()
+  vision_cache_at: z.string().optional(),
+  // v0.4 Task 11 — promotion candidate 영속화 + sidebar 레이아웃.
+  promotion_dismissed_tags: z.array(z.string()).optional(),
+  promotion_snoozed_until_ms: z.number().int().optional(),
+  sidebar_visible: z.boolean().optional(),
+  sidebar_width: z.number().int().min(180).max(400).optional()
 }).strict();
 
 export type Settings = z.infer<typeof SettingsSchema>;
@@ -155,6 +160,50 @@ export class SettingsService {
     await this.persist(next);
   }
 
+  // v0.4 Task 11 — promotion candidate 영속화.
+  async getPromotionDismissedTags(): Promise<string[]> {
+    const s = await this.load();
+    return s.promotion_dismissed_tags ?? [];
+  }
+
+  async addPromotionDismissedTag(tag: string): Promise<void> {
+    const s = await this.load();
+    const list = new Set(s.promotion_dismissed_tags ?? []);
+    list.add(tag);
+    await this.persist({ ...s, promotion_dismissed_tags: [...list] });
+  }
+
+  async getPromotionSnoozeUntil(): Promise<number> {
+    const s = await this.load();
+    return s.promotion_snoozed_until_ms ?? 0;
+  }
+
+  async setPromotionSnoozeUntil(ms: number): Promise<void> {
+    const s = await this.load();
+    await this.persist({ ...s, promotion_snoozed_until_ms: ms });
+  }
+
+  // v0.4 Task 15 — sidebar 레이아웃 영속화.
+  async getSidebarVisible(): Promise<boolean> {
+    const s = await this.load();
+    return s.sidebar_visible ?? true;
+  }
+
+  async setSidebarVisible(v: boolean): Promise<void> {
+    const s = await this.load();
+    await this.persist({ ...s, sidebar_visible: v });
+  }
+
+  async getSidebarWidth(): Promise<number> {
+    const s = await this.load();
+    return s.sidebar_width ?? 240;
+  }
+
+  async setSidebarWidth(v: number): Promise<void> {
+    const s = await this.load();
+    await this.persist({ ...s, sidebar_width: v });
+  }
+
   private async persist(next: Settings): Promise<void> {
     await mkdir(dirname(this.filePath), { recursive: true });
     const tmpPath = this.filePath + '.tmp';

src/main/windows/inboxWindow.ts

@@ -22,8 +22,8 @@ export function createInboxWindow(opts: { visible?: boolean } = {}): BrowserWind
   }
 
   inboxWindow = new BrowserWindow({
-    width: 900,
-    height: 720,
+    width: 1440,
+    height: 900,
     show: false,
     webPreferences: {
       preload: join(__dirname, '../preload/index.js'),

src/preload/index.ts

@@ -8,7 +8,7 @@ const api: InklingApi = {
     hide: () => ipcRenderer.send('capture:hide')
   },
   inbox: {
-    listNotes: (opts) => ipcRenderer.invoke('inbox:list', opts),
+    listNotes: (opts: { limit: number; cursor?: string; notebookId?: string }) => ipcRenderer.invoke('inbox:list', opts),
     updateAiFields: (noteId, fields) =>
       ipcRenderer.invoke('inbox:updateAi', { noteId, fields }),
     setDueDate: (noteId, date) => ipcRenderer.invoke('inbox:setDueDate', { noteId, date }),
@@ -71,8 +71,9 @@ const api: InklingApi = {
     // v0.2.8 Cut A — 첨부 이미지를 OS 기본 뷰어로 열기 (Task 3).
     openMedia: (relPath: string) => ipcRenderer.invoke('inbox:open-media', relPath),
     // v0.2.9 Cut B Task 4 — status 별 list + counts.
+    // v0.4 — notebookId 옵션 pass-through. countsByStatus opts 추가.
     listByStatus: (status, opts) => ipcRenderer.invoke('inbox:list-by-status', status, opts ?? {}),
-    countsByStatus: () => ipcRenderer.invoke('inbox:counts-by-status'),
+    countsByStatus: (opts?: { notebookId?: string }) => ipcRenderer.invoke('inbox:counts-by-status', opts ?? {}),
     // v0.2.9 Cut B Task 8 — 4분기 status 전이 + AI 자동 분류 추천.
     setStatus: (id, status, reason) => ipcRenderer.invoke('inbox:set-status', id, status, reason),
     classifyStatus: (id, reason) => ipcRenderer.invoke('ai:classify-status', id, reason),
@@ -80,6 +81,9 @@ const api: InklingApi = {
     getSettings: () => ipcRenderer.invoke('settings:get'),
     setAiEnabled: (enabled: boolean) => ipcRenderer.invoke('settings:set-ai-enabled', enabled),
     setOnboardingCompleted: (completed: boolean) => ipcRenderer.invoke('settings:set-onboarding-completed', completed),
+    // v0.4 — Sidebar UI state 영속화
+    setSidebarVisible: (visible: boolean) => ipcRenderer.invoke('settings:set-sidebar-visible', visible),
+    setSidebarWidth: (width: number) => ipcRenderer.invoke('settings:set-sidebar-width', width),
     // v0.2.9 Cut B Task 16 — disabled 메모 재투입 + count.
     enqueueDisabled: () => ipcRenderer.invoke('inbox:enqueue-disabled'),
     getDisabledCount: () => ipcRenderer.invoke('inbox:get-disabled-count'),
@@ -88,6 +92,7 @@ const api: InklingApi = {
     listRevisions: (noteId: string) => ipcRenderer.invoke('inbox:list-revisions', noteId),
     restoreRevision: (noteId: string, revId: number) => ipcRenderer.invoke('inbox:restore-revision', noteId, revId),
     // v0.2.11 Cut D — search + 회고 aggregate.
+    // v0.4 — notebookId 옵션 pass-through.
     search: (query, opts) => ipcRenderer.invoke('inbox:search', query, opts ?? {}),
     reviewAggregate: (period) => ipcRenderer.invoke('inbox:review-aggregate', period),
     // v0.3.0 Cut E — 양방향 sync.
@@ -103,6 +108,24 @@ const api: InklingApi = {
     getVisionModels: () => ipcRenderer.invoke('settings:get-vision-models'),
     setVisionModel: (value: string | null) => ipcRenderer.invoke('settings:set-vision-model', value),
     refreshVisionCache: () => ipcRenderer.invoke('settings:refresh-vision-cache'),
+    // v0.4 T4 — AI batch classify (단일 prompt).
+    batchClassifyDefault: () => ipcRenderer.invoke('inbox:batch-classify-default'),
+    // v0.4 Task 11 — promotion candidates + dismissed/snoozed 영속화.
+    listPromotionCandidates: () => ipcRenderer.invoke('inbox:list-promotion-candidates'),
+    getPromotionDismissedTags: () => ipcRenderer.invoke('inbox:get-promotion-dismissed-tags'),
+    addPromotionDismissedTag: (tag: string) => ipcRenderer.invoke('inbox:add-promotion-dismissed-tag', tag),
+    getPromotionSnoozeUntil: () => ipcRenderer.invoke('inbox:get-promotion-snoozed-until'),
+    setPromotionSnoozeUntil: (ms: number) => ipcRenderer.invoke('inbox:set-promotion-snoozed-until', ms),
+  },
+  // v0.4 — notebook CRUD IPC
+  notebook: {
+    list: () => ipcRenderer.invoke('notebook:list'),
+    create: (input: { name: string; color?: string }) => ipcRenderer.invoke('notebook:create', input),
+    rename: (id: string, name: string) => ipcRenderer.invoke('notebook:rename', id, name),
+    setColor: (id: string, color: string | null) => ipcRenderer.invoke('notebook:set-color', id, color),
+    delete: (id: string) => ipcRenderer.invoke('notebook:delete', id),
+    moveNote: (noteId: string, notebookId: string) => ipcRenderer.invoke('notebook:move-note', noteId, notebookId),
+    reorder: (id: string, direction: 'up' | 'down') => ipcRenderer.invoke('notebook:reorder', id, direction)
   }
 };
 

src/renderer/inbox/App.tsx

@@ -16,6 +16,9 @@ import { SettingsPage } from './components/SettingsPage.js';
 import { OnboardingWizard } from './components/OnboardingWizard.js';
 import { SearchBox } from './components/SearchBox.js';
 import { ReviewView } from './components/ReviewView.js';
+import { Sidebar } from './components/Sidebar.js';
+import { PromotionBanner } from './components/PromotionBanner.js';
+import { BatchMoveModal } from './components/BatchMoveModal.js';
 import type { InboxView } from './store.js';
 
 // QuickCapture 단축키 modifier — macOS 는 Cmd, 그 외는 Ctrl.
@@ -35,6 +38,10 @@ export function App(): React.ReactElement {
   const counts = useInbox((s) => s.counts);
   const setView = useInbox((s) => s.setView);
   const searchResults = useInbox((s) => s.searchResults);
+  const selectedNotebookId = useInbox((s) => s.selectedNotebookId);
+  const notebooks = useInbox((s) => s.notebooks);
+  const runBatchClassify = useInbox((s) => s.runBatchClassify);
+  const batchClassifying = useInbox((s) => s.batchClassifying);
   const [recoveryDismissed, setRecoveryDismissed] = useState(isRecoveryDismissedToday());
   // v0.2.9 Cut B Task 12 — 첫 launch onboarding 분기. null = 로딩, true = 표시, false = 미표시.
   const [showOnboarding, setShowOnboarding] = useState<boolean | null>(null);
@@ -51,6 +58,23 @@ export function App(): React.ReactElement {
     })();
   }, []);
 
+  useEffect(() => {
+    void useInbox.getState().loadNotebooks();
+    void useInbox.getState().loadPromotionCandidates();
+  }, []);
+
+  useEffect(() => {
+    const isMac = /Mac/i.test(navigator.platform);
+    const handler = (e: KeyboardEvent) => {
+      if (e.key === 'b' && (isMac ? e.metaKey : e.ctrlKey) && !e.shiftKey && !e.altKey) {
+        e.preventDefault();
+        useInbox.getState().toggleSidebar();
+      }
+    };
+    window.addEventListener('keydown', handler);
+    return () => window.removeEventListener('keydown', handler);
+  }, []);
+
   useEffect(() => {
     void loadInitial();
     const unsubNote = inboxApi.onNoteUpdated((note) => {
@@ -71,6 +95,9 @@ export function App(): React.ReactElement {
     // deps array 에 추가 불필요. mount 시 1회 구독 + unmount 시 해제.
   }, [loadInitial, refreshMeta, upsertNote]);
 
+  // v0.4 T5 — default notebook(첫 번째) 선택 시 "AI 정리하기" 버튼 노출 조건.
+  const isDefaultNotebook = notebooks.length > 0 && selectedNotebookId === notebooks[0]?.id;
+
   if (showOnboarding === null) return <></>;
   if (showOnboarding) return <OnboardingWizard onClose={() => setShowOnboarding(false)} />;
 
@@ -95,15 +122,27 @@ export function App(): React.ReactElement {
   });
 
   return (
-    <>
+    <div style={{ display: 'flex', height: '100vh' }}>
+      <Sidebar />
+      <main style={{ flex: 1, overflowY: 'auto' }}>
       <div className="header">
+        <button
+          onClick={() => useInbox.getState().toggleSidebar()}
+          aria-label="사이드바 토글"
+          title="사이드바 토글 (Cmd/Ctrl+B)"
+          style={{
+            background: 'none', border: 'none', cursor: 'pointer',
+            fontSize: 18, padding: '0 8px 0 0', color: '#444', lineHeight: 1
+          }}
+        >
+          ☰
+        </button>
         <h1 style={{ fontSize: 18, margin: 0 }}>Inkling</h1>
         <div style={{ display: 'flex', gap: 6, marginLeft: 12 }}>
           {(
             [
               { key: 'inbox', label: 'Inbox', count: counts.active },
               { key: 'completed', label: '완료', count: counts.completed },
-              { key: 'archived', label: '보관', count: counts.archived },
               { key: 'trash', label: '휴지통', count: counts.trashed }
             ] as const
           ).map((t) => (
@@ -119,6 +158,19 @@ export function App(): React.ReactElement {
             </button>
           ))}
         </div>
+        {view === 'inbox' && isDefaultNotebook && notebooks.length > 1 && (
+          <button
+            onClick={() => { void runBatchClassify(); }}
+            disabled={batchClassifying}
+            style={{
+              background: '#5a3a8c', color: '#fff', border: 'none', borderRadius: 4,
+              padding: '4px 10px', fontSize: 11, cursor: batchClassifying ? 'not-allowed' : 'pointer',
+              marginLeft: 8
+            }}
+          >
+            {batchClassifying ? '🪄 분석 중…' : '🪄 AI 정리하기'}
+          </button>
+        )}
         <select
           aria-label="회고 기간"
           value={view.startsWith('review-') ? view.replace('review-', '') : ''}
@@ -153,7 +205,7 @@ export function App(): React.ReactElement {
           ⚙
         </button>
       </div>
-      <main className="main">
+      <div className="main">
         {!showTrash && (
           <>
             {/* AI/만료/회상 배너는 active 노트 컨텍스트 — inbox 탭에서만 노출.
@@ -169,6 +221,7 @@ export function App(): React.ReactElement {
                 <FailedBanner />
                 <ExpiryBanner />
                 <RecallBanner />
+                <PromotionBanner />
               </>
             )}
             {tagFilter !== null && (
@@ -237,8 +290,10 @@ export function App(): React.ReactElement {
             )}
           </>
         )}
-      </main>
+      </div>
       <TagUndoToast />
-    </>
+      </main>
+      <BatchMoveModal />
+    </div>
   );
 }

src/renderer/inbox/api.ts

@@ -1,2 +1,3 @@
-import type { InboxApi } from '@shared/types';
+import type { InboxApi, NotebookApi } from '@shared/types';
 export const inboxApi: InboxApi = window.inkling.inbox;
+export const notebookApi: NotebookApi = window.inkling.notebook;

src/renderer/inbox/components/BatchMoveModal.tsx

@@ -0,0 +1,98 @@
+import React, { useEffect, useState } from 'react';
+import { useInbox } from '../store.js';
+
+export function BatchMoveModal(): React.ReactElement | null {
+  const result = useInbox((s) => s.batchClassifyResult);
+  const clear = useInbox((s) => s.clearBatchClassify);
+  const accept = useInbox((s) => s.acceptBatchAssignments);
+  const notes = useInbox((s) => s.notes);
+  const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
+
+  // result 변할 때 → 매칭된 (notebookId != null) noteId 모두 default 로 select
+  useEffect(() => {
+    if (result === null) return;
+    const ids = new Set<string>();
+    for (const a of result.assignments) {
+      if (a.notebookId !== null) ids.add(a.noteId);
+    }
+    setSelectedIds(ids);
+  }, [result]);
+
+  if (result === null) return null;
+
+  const actionable = result.assignments.filter((a) => a.notebookId !== null);
+
+  function toggle(noteId: string) {
+    setSelectedIds((prev) => {
+      const n = new Set(prev);
+      if (n.has(noteId)) n.delete(noteId);
+      else n.add(noteId);
+      return n;
+    });
+  }
+
+  function findNote(id: string): string {
+    const n = notes.find((nn) => nn.id === id);
+    return n?.aiTitle ?? n?.rawText.slice(0, 60) ?? '(노트)';
+  }
+
+  async function onConfirm() {
+    const accepted = actionable
+      .filter((a) => selectedIds.has(a.noteId) && a.notebookId !== null)
+      .map((a) => ({ noteId: a.noteId, notebookId: a.notebookId! }));
+    await accept(accepted);
+  }
+
+  return (
+    <div
+      onClick={clear}
+      style={{ position: 'fixed', inset: 0, background: 'rgba(0,0,0,0.4)', display: 'flex', alignItems: 'center', justifyContent: 'center', zIndex: 130 }}
+    >
+      <div
+        onClick={(e) => e.stopPropagation()}
+        style={{ background: '#fff', padding: 20, borderRadius: 8, width: 560, maxHeight: '80vh', overflow: 'auto' }}
+      >
+        <h3 style={{ margin: '0 0 12px 0', fontSize: 15 }}>AI 분류 제안</h3>
+        {actionable.length === 0 ? (
+          <p style={{ fontSize: 13, color: '#666' }}>
+            현재 분류할 만한 노트를 찾지 못했어요. 노트북을 더 만들거나 노트가 누적된 뒤 다시 시도해보세요.
+          </p>
+        ) : (
+          <>
+            <p style={{ fontSize: 12, color: '#666', marginBottom: 10 }}>
+              체크된 노트만 이동합니다. ({selectedIds.size}/{actionable.length})
+            </p>
+            <div style={{ maxHeight: '50vh', overflow: 'auto', border: '1px solid #eee', borderRadius: 4 }}>
+              {actionable.map((a) => (
+                <label
+                  key={a.noteId}
+                  style={{ display: 'flex', alignItems: 'center', gap: 8, padding: '6px 10px', borderBottom: '1px solid #f0f0f0', cursor: 'pointer', fontSize: 12 }}
+                >
+                  <input
+                    type="checkbox"
+                    checked={selectedIds.has(a.noteId)}
+                    onChange={() => toggle(a.noteId)}
+                  />
+                  <span style={{ flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+                    {findNote(a.noteId)}
+                  </span>
+                  <span style={{ color: '#0a4b80', fontSize: 11 }}>→ {a.notebookName}</span>
+                </label>
+              ))}
+            </div>
+          </>
+        )}
+        <div style={{ display: 'flex', gap: 8, justifyContent: 'flex-end', marginTop: 14 }}>
+          <button onClick={clear} style={{ padding: '5px 12px', fontSize: 12 }}>취소</button>
+          <button
+            onClick={() => { void onConfirm(); }}
+            disabled={selectedIds.size === 0}
+            style={{ padding: '5px 12px', fontSize: 12, background: '#0a4b80', color: '#fff', border: 'none', borderRadius: 4, cursor: selectedIds.size === 0 ? 'not-allowed' : 'pointer', opacity: selectedIds.size === 0 ? 0.5 : 1 }}
+          >
+            {selectedIds.size}건 이동
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}

src/renderer/inbox/components/MoveStatusModal.tsx

@@ -18,8 +18,9 @@ interface Props {
  * 사유 입력 + AI 자동 분류 + 수동 status 선택. 버튼은 currentStatus 를 제외한
  * 나머지 status 만 노출 (v0.3.6 까지는 완료/보관/휴지통 hardcode 라 완료/보관 노트가
  * inbox 로 못 돌아오던 버그를 v0.3.7 에서 정정).
+ * v0.4 Task 16 — 'archived' 제거. active/completed/trashed 3개 옵션만 노출.
  */
-const ALL_STATUSES: readonly NoteStatus[] = ['active', 'completed', 'archived', 'trashed'];
+const ALL_STATUSES: readonly NoteStatus[] = ['active', 'completed', 'trashed'];
 
 export function MoveStatusModal({
   noteId,
@@ -150,8 +151,6 @@ export function statusLabel(s: NoteStatus): string {
       return 'Inbox';
     case 'completed':
       return '완료';
-    case 'archived':
-      return '보관';
     case 'trashed':
       return '휴지통';
   }

src/renderer/inbox/components/NoteCard.tsx

@@ -1,5 +1,5 @@
 import React, { useState } from 'react';
-import type { Note } from '@shared/types';
+import type { Note, Notebook } from '@shared/types';
 import { KST_OFFSET_MS } from '@shared/util/kstDate.js';
 import { inboxApi } from '../api.js';
 import { useInbox } from '../store.js';
@@ -109,6 +109,64 @@ function DueDateBadge({
   );
 }
 
+function NotebookChip({ current, notebooks, onMove }: {
+  current: Notebook;
+  notebooks: Notebook[];
+  onMove: (id: string) => Promise<void>;
+}): React.ReactElement {
+  const [open, setOpen] = useState(false);
+  const others = notebooks.filter((nb) => nb.id !== current.id);
+  const hasOthers = others.length > 0;
+  return (
+    <span style={{ position: 'relative', display: 'inline-block' }}>
+      <button
+        onClick={() => hasOthers && setOpen(!open)}
+        title={hasOthers ? '다른 노트북으로 이동' : '현재 노트북'}
+        disabled={!hasOthers}
+        style={{
+          display: 'inline-flex', alignItems: 'center', gap: 4,
+          background: '#eaf3ff', color: '#0a4b80',
+          border: '1px solid #cfe0f5', borderRadius: 10,
+          padding: '2px 8px', fontSize: 11, cursor: hasOthers ? 'pointer' : 'default'
+        }}
+      >
+        <span style={{ width: 6, height: 6, borderRadius: '50%', background: current.color ?? '#bbb', display: 'inline-block' }} />
+        📓 {current.name}
+        {hasOthers && <span style={{ fontSize: 9, opacity: 0.6 }}>▾</span>}
+      </button>
+      {open && hasOthers && (
+        <div
+          style={{
+            position: 'absolute', bottom: '100%', left: 0,
+            background: '#fff', border: '1px solid #ccc', borderRadius: 4,
+            zIndex: 50, minWidth: 140, boxShadow: '0 2px 6px rgba(0,0,0,0.15)',
+            marginBottom: 2
+          }}
+        >
+          <div style={{ fontSize: 10, color: '#888', padding: '4px 10px', borderBottom: '1px solid #eee' }}>
+            이동할 노트북
+          </div>
+          {others.map((nb) => (
+            <button
+              key={nb.id}
+              onClick={async () => { await onMove(nb.id); setOpen(false); }}
+              style={{
+                display: 'flex', alignItems: 'center', gap: 6,
+                width: '100%', textAlign: 'left',
+                padding: '4px 10px', border: 'none', background: 'transparent',
+                cursor: 'pointer', fontSize: 11
+              }}
+            >
+              <span style={{ width: 6, height: 6, borderRadius: '50%', background: nb.color ?? '#bbb', display: 'inline-block' }} />
+              {nb.name}
+            </button>
+          ))}
+        </div>
+      )}
+    </span>
+  );
+}
+
 export function NoteCard({ note, onDeleted, onUpdated, mode = 'inbox', onRestore, onPermanentDelete }: Props): React.ReactElement {
   const isTrash = mode === 'trash';
   // v0.2.9 Cut B Task 13 — ai_status='disabled' 노트는 raw_text 가 1차 정보. 원문 펼침 default 켬.
@@ -122,6 +180,10 @@ export function NoteCard({ note, onDeleted, onUpdated, mode = 'inbox', onRestore
   const [draftRaw, setDraftRaw] = useState('');
   const [showRevisions, setShowRevisions] = useState(false);
 
+  const notebooks = useInbox((s) => s.notebooks);
+  const moveNoteToNotebook = useInbox((s) => s.moveNoteToNotebook);
+  const currentNb = notebooks.find((nb) => nb.id === local.notebookId);
+
   React.useEffect(() => { setLocal(note); }, [note]);
 
   const formatted = new Date(note.createdAt).toLocaleString('ko-KR');
@@ -475,6 +537,17 @@ export function NoteCard({ note, onDeleted, onUpdated, mode = 'inbox', onRestore
             alignItems: 'center'
           }}
         >
+          {/* notebook chip — tag(키워드)와 notebook(컨텍스트) 의미 분리. done + inbox 에서만 표시. */}
+          {!isTrash && local.aiStatus === 'done' && currentNb && (
+            <NotebookChip
+              current={currentNb}
+              notebooks={notebooks}
+              onMove={async (newId) => {
+                await moveNoteToNotebook(local.id, newId);
+                setLocal({ ...local, notebookId: newId });
+              }}
+            />
+          )}
           {/* 이동 버튼 — 클릭 시 MoveStatusModal 진입.
               사유 입력 + AI 자동 분류 + 수동 status 선택 한 곳에서 처리. */}
           <button

src/renderer/inbox/components/NotebookCreateModal.tsx

@@ -0,0 +1,64 @@
+import React, { useState } from 'react';
+import { useInbox } from '../store.js';
+
+const COLOR_PALETTE = ['#0a4b80', '#236b1a', '#946100', '#a55', '#5a3a8c', '#1a5b6e'];
+
+export function NotebookCreateModal({ onClose }: { onClose: () => void }): React.ReactElement {
+  const createNotebook = useInbox((s) => s.createNotebook);
+  const [name, setName] = useState('');
+  const [color, setColor] = useState<string>(COLOR_PALETTE[0]!);
+  const [err, setErr] = useState<string | null>(null);
+
+  async function onSubmit() {
+    const r = await createNotebook(name.trim(), color);
+    if (r.ok) onClose();
+    else setErr(r.reason === 'duplicate_name' ? '같은 이름의 노트북이 이미 있어요.' : (r.reason ?? '저장 실패'));
+  }
+
+  return (
+    <div
+      onClick={onClose}
+      style={{ position: 'fixed', inset: 0, background: 'rgba(0,0,0,0.4)', display: 'flex', alignItems: 'center', justifyContent: 'center', zIndex: 120 }}
+    >
+      <div
+        onClick={(e) => e.stopPropagation()}
+        style={{ background: '#fff', padding: 20, borderRadius: 8, width: 360 }}
+      >
+        <h3 style={{ margin: '0 0 12px 0', fontSize: 15 }}>새 노트북</h3>
+        <input
+          aria-label="노트북 이름"
+          value={name}
+          onChange={(e) => setName(e.target.value)}
+          placeholder="예: 회사, 학습"
+          autoFocus
+          style={{ width: '100%', padding: '6px 8px', fontSize: 13, border: '1px solid #ccc', borderRadius: 4, boxSizing: 'border-box' }}
+        />
+        <div style={{ display: 'flex', gap: 6, marginTop: 10 }}>
+          {COLOR_PALETTE.map((c) => (
+            <button
+              key={c}
+              onClick={() => setColor(c)}
+              aria-label={`색 ${c}`}
+              style={{
+                width: 24, height: 24, borderRadius: '50%',
+                background: c, border: c === color ? '2px solid #333' : '1px solid #ccc',
+                cursor: 'pointer', padding: 0
+              }}
+            />
+          ))}
+        </div>
+        {err && <div style={{ color: '#c33', fontSize: 12, marginTop: 8 }}>{err}</div>}
+        <div style={{ display: 'flex', gap: 8, justifyContent: 'flex-end', marginTop: 14 }}>
+          <button onClick={onClose} style={{ padding: '5px 12px', fontSize: 12 }}>취소</button>
+          <button
+            onClick={() => { void onSubmit(); }}
+            disabled={name.trim().length === 0}
+            style={{ padding: '5px 12px', fontSize: 12, background: '#0a4b80', color: '#fff', border: 'none', borderRadius: 4, cursor: name.trim().length === 0 ? 'not-allowed' : 'pointer', opacity: name.trim().length === 0 ? 0.5 : 1 }}
+          >
+            만들기
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}

src/renderer/inbox/components/NotebookList.tsx

@@ -0,0 +1,79 @@
+import React, { useState } from 'react';
+import type { Notebook } from '@shared/types';
+
+interface Props {
+  notebooks: Notebook[];
+  selectedId: string | null;
+  onSelect: (id: string) => void;
+  onCreate: () => void;
+  onReorder?: (id: string, direction: 'up' | 'down') => Promise<void>;
+}
+
+export function NotebookList({ notebooks, selectedId, onSelect, onCreate, onReorder }: Props): React.ReactElement {
+  const [hoverId, setHoverId] = useState<string | null>(null);
+
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column' }}>
+      {notebooks.map((nb, idx) => {
+        const active = nb.id === selectedId;
+        const hover = nb.id === hoverId;
+        const isFirst = idx === 0;
+        const isLast = idx === notebooks.length - 1;
+        return (
+          <div
+            key={nb.id}
+            onMouseEnter={() => setHoverId(nb.id)}
+            onMouseLeave={() => setHoverId(null)}
+            style={{ position: 'relative', display: 'flex' }}
+          >
+            <button
+              onClick={() => onSelect(nb.id)}
+              style={{
+                display: 'flex', alignItems: 'center', gap: 8,
+                padding: '6px 12px', background: active ? '#eaf3ff' : 'transparent',
+                border: 'none', cursor: 'pointer', textAlign: 'left',
+                color: active ? '#0a4b80' : '#333', fontSize: 13, flex: 1
+              }}
+            >
+              <span style={{
+                width: 8, height: 8, borderRadius: '50%',
+                background: nb.color ?? '#bbb', flexShrink: 0
+              }} />
+              <span style={{ flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+                {nb.name}
+              </span>
+              <span style={{ fontSize: 11, color: '#888' }}>{nb.noteCount}</span>
+            </button>
+            {hover && onReorder && notebooks.length > 1 && (
+              <div style={{ position: 'absolute', right: 4, top: 2, display: 'flex', gap: 2 }}>
+                <button
+                  onClick={(e) => { e.stopPropagation(); if (!isFirst) void onReorder(nb.id, 'up'); }}
+                  disabled={isFirst}
+                  aria-label={`${nb.name} 위로`}
+                  title="위로"
+                  style={{ background: 'rgba(255,255,255,0.9)', border: '1px solid #ccc', borderRadius: 3, fontSize: 10, padding: '0 4px', cursor: isFirst ? 'not-allowed' : 'pointer', opacity: isFirst ? 0.3 : 1 }}
+                >▲</button>
+                <button
+                  onClick={(e) => { e.stopPropagation(); if (!isLast) void onReorder(nb.id, 'down'); }}
+                  disabled={isLast}
+                  aria-label={`${nb.name} 아래로`}
+                  title="아래로"
+                  style={{ background: 'rgba(255,255,255,0.9)', border: '1px solid #ccc', borderRadius: 3, fontSize: 10, padding: '0 4px', cursor: isLast ? 'not-allowed' : 'pointer', opacity: isLast ? 0.3 : 1 }}
+                >▼</button>
+              </div>
+            )}
+          </div>
+        );
+      })}
+      <button
+        onClick={onCreate}
+        style={{
+          padding: '6px 12px', background: 'transparent', border: 'none',
+          cursor: 'pointer', textAlign: 'left', color: '#888', fontSize: 12
+        }}
+      >
+        + 새 노트북
+      </button>
+    </div>
+  );
+}

src/renderer/inbox/components/PromotionBanner.tsx

@@ -0,0 +1,78 @@
+import React, { useState } from 'react';
+import { useInbox } from '../store.js';
+import { Banner } from './Banner.js';
+
+const COLOR_PALETTE = ['#0a4b80', '#236b1a', '#946100', '#a55', '#5a3a8c'];
+
+export function PromotionBanner(): React.ReactElement | null {
+  const candidates = useInbox((s) => s.promotionCandidates);
+  const accept = useInbox((s) => s.acceptPromotion);
+  const snooze = useInbox((s) => s.snoozePromotion);
+  const dismiss = useInbox((s) => s.dismissPromotion);
+  const [editing, setEditing] = useState<{ tag: string; name: string; color: string } | null>(null);
+
+  if (candidates.length === 0) return null;
+  const c = candidates[0]!;
+
+  return (
+    <Banner severity="info">
+      {editing === null ? (
+        <div style={{ display: 'flex', alignItems: 'center', gap: 8, flexWrap: 'wrap' }}>
+          <span>💡 <code>{c.tag}</code> 관련 노트 {c.noteIds.length}개가 모였어요. 새 노트북 <b>{c.suggestedName}</b> 로 분리할까요?</span>
+          <div style={{ display: 'flex', gap: 6, marginLeft: 'auto' }}>
+            <button
+              onClick={() => setEditing({ tag: c.tag, name: c.suggestedName, color: COLOR_PALETTE[0]! })}
+              style={{ background: '#0a4b80', color: '#fff', border: 'none', borderRadius: 4, padding: '4px 12px', fontSize: 12, cursor: 'pointer' }}
+            >
+              수락
+            </button>
+            <button
+              onClick={() => { void snooze(); }}
+              style={{ background: 'transparent', color: '#234', border: '1px solid #ccc', borderRadius: 4, padding: '4px 12px', fontSize: 12, cursor: 'pointer' }}
+            >
+              나중에
+            </button>
+            <button
+              onClick={() => { void dismiss(c.tag); }}
+              style={{ background: 'transparent', color: '#888', border: 'none', cursor: 'pointer', fontSize: 12 }}
+            >
+              숨기기
+            </button>
+          </div>
+        </div>
+      ) : (
+        <div style={{ display: 'flex', alignItems: 'center', gap: 8, flexWrap: 'wrap' }}>
+          <input
+            aria-label="노트북 이름"
+            value={editing.name}
+            onChange={(e) => setEditing({ ...editing, name: e.target.value })}
+            style={{ flex: 1, fontSize: 13, padding: '4px 8px', border: '1px solid #ccc', borderRadius: 4, minWidth: 120 }}
+            autoFocus
+          />
+          <div style={{ display: 'flex', gap: 4 }}>
+            {COLOR_PALETTE.map((col) => (
+              <button
+                key={col}
+                onClick={() => setEditing({ ...editing, color: col })}
+                aria-label={`색 ${col}`}
+                style={{
+                  width: 20, height: 20, borderRadius: '50%', background: col,
+                  border: col === editing.color ? '2px solid #333' : '1px solid #ccc',
+                  cursor: 'pointer', padding: 0
+                }}
+              />
+            ))}
+          </div>
+          <button
+            onClick={() => { void accept(editing.tag, editing.name.trim(), editing.color); setEditing(null); }}
+            disabled={editing.name.trim().length === 0}
+            style={{ background: '#0a4b80', color: '#fff', border: 'none', borderRadius: 4, padding: '4px 12px', fontSize: 12, cursor: 'pointer' }}
+          >
+            만들기
+          </button>
+          <button onClick={() => setEditing(null)} style={{ fontSize: 12, padding: '4px 10px' }}>취소</button>
+        </div>
+      )}
+    </Banner>
+  );
+}

src/renderer/inbox/components/SearchBox.tsx

@@ -3,32 +3,50 @@ import { useInbox } from '../store.js';
 
 export function SearchBox(): React.ReactElement {
   const [draft, setDraft] = useState('');
+  const [scope, setScope] = useState<'current' | 'all'>('current');
+  const selectedNotebookId = useInbox((s) => s.selectedNotebookId);
 
   useEffect(() => {
     const handle = setTimeout(() => {
       const trimmed = draft.trim();
-      if (trimmed.length === 0) useInbox.getState().clearSearch();
-      else void useInbox.getState().searchNotes(trimmed);
+      if (trimmed.length === 0) {
+        useInbox.getState().clearSearch();
+      } else {
+        // v0.4 Task 18 — scope='current' 이면 현재 notebook ID 전달, 'all' 이면 미전달(전체 검색).
+        const notebookId = scope === 'current' ? (selectedNotebookId ?? undefined) : undefined;
+        void useInbox.getState().searchNotes(trimmed, { notebookId });
+      }
     }, 200);
     return () => clearTimeout(handle);
-  }, [draft]);
+  }, [draft, scope, selectedNotebookId]);
 
   return (
-    <input
-      type="search"
-      role="searchbox"
-      placeholder="검색…"
-      value={draft}
-      onChange={(e) => setDraft(e.target.value)}
-      aria-label="노트 검색"
-      style={{
-        marginLeft: 12,
-        padding: '4px 8px',
-        fontSize: 12,
-        border: '1px solid #bbb',
-        borderRadius: 4,
-        width: 200
-      }}
-    />
+    <span style={{ display: 'inline-flex', alignItems: 'center' }}>
+      <input
+        type="search"
+        role="searchbox"
+        placeholder="검색…"
+        value={draft}
+        onChange={(e) => setDraft(e.target.value)}
+        aria-label="노트 검색"
+        style={{
+          marginLeft: 12,
+          padding: '4px 8px',
+          fontSize: 12,
+          border: '1px solid #bbb',
+          borderRadius: 4,
+          width: 200
+        }}
+      />
+      <select
+        value={scope}
+        onChange={(e) => setScope(e.target.value as 'current' | 'all')}
+        aria-label="검색 범위"
+        style={{ fontSize: 11, padding: '2px 4px', marginLeft: 4 }}
+      >
+        <option value="current">이 노트북</option>
+        <option value="all">모든 노트북</option>
+      </select>
+    </span>
   );
 }

src/renderer/inbox/components/Sidebar.tsx

@@ -0,0 +1,33 @@
+import React, { useState } from 'react';
+import { useInbox } from '../store.js';
+import { NotebookList } from './NotebookList.js';
+import { NotebookCreateModal } from './NotebookCreateModal.js';
+
+export function Sidebar(): React.ReactElement | null {
+  const visible = useInbox((s) => s.sidebarVisible);
+  const width = useInbox((s) => s.sidebarWidth);
+  const notebooks = useInbox((s) => s.notebooks);
+  const selectedId = useInbox((s) => s.selectedNotebookId);
+  const selectNotebook = useInbox((s) => s.selectNotebook);
+  const reorderNotebook = useInbox((s) => s.reorderNotebook);
+  const [createOpen, setCreateOpen] = useState(false);
+
+  if (!visible) return null;
+
+  return (
+    <aside style={{
+      width, borderRight: '1px solid #e0e0e0',
+      background: '#fafafa', overflowY: 'auto',
+      flexShrink: 0
+    }}>
+      <NotebookList
+        notebooks={notebooks}
+        selectedId={selectedId}
+        onSelect={selectNotebook}
+        onCreate={() => setCreateOpen(true)}
+        onReorder={reorderNotebook}
+      />
+      {createOpen && <NotebookCreateModal onClose={() => setCreateOpen(false)} />}
+    </aside>
+  );
+}

src/renderer/inbox/store.ts

@@ -1,20 +1,24 @@
 import { create } from 'zustand';
-import type { Note, ReviewAggregate, WeeklyContinuity } from '@shared/types';
-import { inboxApi } from './api.js';
+import type { Note, NoteStatus, Notebook, PromotionCandidate, ReviewAggregate, WeeklyContinuity, BatchClassifyResult } from '@shared/types';
+import { inboxApi, notebookApi } from './api.js';
 import { nextKstMidnightMs } from '@shared/util/kstDate.js';
 
+function toTitleCase(s: string): string {
+  return s.split('-').map((w) => w.charAt(0).toUpperCase() + w.slice(1)).join(' ');
+}
+
 export { selectFilteredNotes } from './selectFilteredNotes.js';
 
-// v0.2.9 Cut B Task 4 — 4탭 view enum + settings.
-// 'inbox' = active, 'completed'/'archived' = NoteStatus 그대로, 'trash' = trashed (mirror), 'settings' = SettingsPage.
+// v0.2.9 Cut B Task 4 — 3탭 view enum + settings.
+// v0.4 Task 16 — 'archived' view 제거 (NoteStatus 에서 archived 삭제됨).
+// 'inbox' = active, 'completed' = NoteStatus 그대로, 'trash' = trashed (mirror), 'settings' = SettingsPage.
 export type InboxView =
-  | 'inbox' | 'completed' | 'archived' | 'trash' | 'settings'
+  | 'inbox' | 'completed' | 'trash' | 'settings'
   | 'review-daily' | 'review-weekly' | 'review-monthly';
 
 export interface InboxCounts {
   active: number;
   completed: number;
-  archived: number;
   trashed: number;
 }
 
@@ -45,6 +49,16 @@ interface InboxState {
   searchQuery: string;
   searchResults: Note[] | null;  // null = 검색 안 한 상태
   reviewData: ReviewAggregate | null;
+  // v0.4 — Notebook sidebar state.
+  notebooks: Notebook[];
+  selectedNotebookId: string | null;
+  sidebarVisible: boolean;
+  sidebarWidth: number;
+  // v0.4 Task 11 — promotion candidates (dismissed/snoozed 필터 적용 후 목록).
+  promotionCandidates: PromotionCandidate[];
+  // v0.4 T5 — AI batch classify state.
+  batchClassifyResult: BatchClassifyResult | null;
+  batchClassifying: boolean;
   loadInitial: () => Promise<void>;
   refreshMeta: () => Promise<void>;
   upsertNote: (note: Note) => void;
@@ -52,7 +66,7 @@ interface InboxState {
   setTagFilter: (tag: string | null) => void;
   setShowSettings: (open: boolean) => void;
   setView: (view: InboxView) => void;
-  loadByView: (view: 'inbox' | 'completed' | 'archived' | 'trash') => Promise<void>;
+  loadByView: (view: 'inbox' | 'completed' | 'trash') => Promise<void>;
   toggleShowTrash: () => Promise<void>;
   loadTrash: () => Promise<void>;
   restoreNote: (id: string) => Promise<void>;
@@ -68,9 +82,29 @@ interface InboxState {
   snoozeRecall: () => Promise<void>;
   // v0.2.11 Cut D — search + review actions.
   setSearchQuery: (q: string) => void;
-  searchNotes: (q: string) => Promise<void>;
+  // v0.4 Task 18 — scope 토글. notebookId 전달 시 해당 notebook 안 검색, undefined 시 전체 검색.
+  searchNotes: (q: string, opts?: { notebookId?: string }) => Promise<void>;
   clearSearch: () => void;
   loadReview: (period: 'daily' | 'weekly' | 'monthly') => Promise<void>;
+  // v0.4 — Notebook actions.
+  loadNotebooks: () => Promise<void>;
+  selectNotebook: (id: string) => void;
+  createNotebook: (name: string, color?: string) => Promise<{ ok: boolean; reason?: string }>;
+  renameNotebook: (id: string, name: string) => Promise<{ ok: boolean; reason?: string }>;
+  setNotebookColor: (id: string, color: string | null) => Promise<void>;
+  deleteNotebook: (id: string) => Promise<{ ok: boolean; reason?: string }>;
+  moveNoteToNotebook: (noteId: string, notebookId: string) => Promise<void>;
+  reorderNotebook: (id: string, direction: 'up' | 'down') => Promise<void>;
+  toggleSidebar: () => void;
+  // v0.4 Task 11 — promotion candidate actions.
+  loadPromotionCandidates: () => Promise<void>;
+  acceptPromotion: (tag: string, customName: string, color: string | undefined) => Promise<void>;
+  snoozePromotion: () => Promise<void>;
+  dismissPromotion: (tag: string) => Promise<void>;
+  // v0.4 T5 — AI batch classify actions.
+  runBatchClassify: () => Promise<void>;
+  clearBatchClassify: () => void;
+  acceptBatchAssignments: (accepted: Array<{ noteId: string; notebookId: string }>) => Promise<void>;
 }
 
 const emptyContinuity: WeeklyContinuity = {
@@ -85,7 +119,7 @@ export const useInbox = create<InboxState>((set, get) => ({
   showTrash: false,
   showSettings: false,
   view: 'inbox',
-  counts: { active: 0, completed: 0, archived: 0, trashed: 0 },
+  counts: { active: 0, completed: 0, trashed: 0 },
   continuity: emptyContinuity,
   pendingCount: 0,
   ollamaStatus: { ok: true },
@@ -101,14 +135,22 @@ export const useInbox = create<InboxState>((set, get) => ({
   searchQuery: '',
   searchResults: null,
   reviewData: null,
+  notebooks: [],
+  selectedNotebookId: null,
+  sidebarVisible: true,
+  sidebarWidth: 240,
+  promotionCandidates: [],
+  batchClassifyResult: null,
+  batchClassifying: false,
   async loadInitial() {
     // v0.3.8 — IPC 실패 시 loading=true 영구 stuck 방지. catch 로 reset.
     set({ loading: true });
     try {
+      const notebookId = get().selectedNotebookId ?? undefined;
       const [notes, continuity, pendingCount, ollamaStatus, todayCount, trashCount, expiredCandidates, failedCount, recallCandidate, counts, settings] = await Promise.all([
         // inbox 탭은 status='active' 만 표시 — loadByView('inbox') 와 동일 path 로 일관성 확보.
         // listNotes 는 deleted_at IS NULL 만 필터 (= active+completed+archived 혼재) 이라 부정확.
-        inboxApi.listByStatus('active', { limit: 50 }),
+        inboxApi.listByStatus('active', { limit: 50, notebookId }),
         inboxApi.getContinuity(),
         inboxApi.getPendingCount(),
         inboxApi.getOllamaStatus(),
@@ -117,10 +159,17 @@ export const useInbox = create<InboxState>((set, get) => ({
         inboxApi.listExpired(),
         inboxApi.getFailedCount(),
         inboxApi.listRecallCandidate(),
-        inboxApi.countsByStatus(),
+        inboxApi.countsByStatus({ notebookId }),
         inboxApi.getSettings()
       ]);
-      set({ notes, continuity, pendingCount, ollamaStatus, todayCount, trashCount, expiredCandidates, failedCount, recallCandidate, counts, ai_enabled: settings.ai_enabled ?? true, loading: false });
+      set({
+        notes, continuity, pendingCount, ollamaStatus, todayCount, trashCount, expiredCandidates,
+        failedCount, recallCandidate, counts,
+        ai_enabled: settings.ai_enabled ?? true,
+        sidebarVisible: settings.sidebar_visible ?? true,
+        sidebarWidth: settings.sidebar_width ?? 240,
+        loading: false
+      });
     } catch (e) {
       // 첫 launch 의 IPC 실패 (DB migration 실패 / main process 비정상) 시 무한 loading 회피.
       // 빈 데이터로 진입하면 사용자가 캡처 시도 → 실제 fail 이 표면화 → 재시도 가능.
@@ -130,6 +179,7 @@ export const useInbox = create<InboxState>((set, get) => ({
   },
   async refreshMeta() {
     try {
+      const notebookId = get().selectedNotebookId ?? undefined;
       const [continuity, pendingCount, ollamaStatus, todayCount, trashCount, expiredCandidates, failedCount, recallCandidate, counts, settings] = await Promise.all([
         inboxApi.getContinuity(),
         inboxApi.getPendingCount(),
@@ -139,7 +189,7 @@ export const useInbox = create<InboxState>((set, get) => ({
         inboxApi.listExpired(),
         inboxApi.getFailedCount(),
         inboxApi.listRecallCandidate(),
-        inboxApi.countsByStatus(),
+        inboxApi.countsByStatus({ notebookId }),
         inboxApi.getSettings()
       ]);
       set({ continuity, pendingCount, ollamaStatus, todayCount, trashCount, expiredCandidates, failedCount, recallCandidate, counts, ai_enabled: settings.ai_enabled ?? true });
@@ -160,10 +210,9 @@ export const useInbox = create<InboxState>((set, get) => ({
     const state = get();
     const view = state.view;
     const showTrash = state.showTrash;
-    const viewStatus: 'active' | 'completed' | 'archived' | 'trashed' | null =
+    const viewStatus: 'active' | 'completed' | 'trashed' | null =
       view === 'inbox' ? 'active' :
       view === 'completed' ? 'completed' :
-      view === 'archived' ? 'archived' :
       view === 'trash' ? 'trashed' : null;
 
     // trashNotes — note.status='trashed' 면 upsert, 아니면 제거.
@@ -244,7 +293,7 @@ export const useInbox = create<InboxState>((set, get) => ({
     });
     // status view 면 해당 status fetch. inbox 도 포함 — 다른 탭에서 돌아올 때 notes 가
     // 이전 status 로 stale 한 상태이므로 재로드 필요.
-    if (view === 'inbox' || view === 'completed' || view === 'archived' || view === 'trash') {
+    if (view === 'inbox' || view === 'completed' || view === 'trash') {
       void get().loadByView(view);
     }
     // v0.2.11 Cut D — review-* view 진입 시 aggregate 로드.
@@ -257,8 +306,9 @@ export const useInbox = create<InboxState>((set, get) => ({
     // fail 시 빈 배열로 reset 해서 사용자에게 "비어있음" 으로 표시 (혼동 < stale).
     const status =
       view === 'trash' ? 'trashed' : view === 'inbox' ? 'active' : view;
+    const notebookId = get().selectedNotebookId ?? undefined;
     try {
-      const notes = await inboxApi.listByStatus(status, { limit: 200 });
+      const notes = await inboxApi.listByStatus(status, { limit: 200, notebookId });
       if (view === 'trash') {
         set({ trashNotes: notes, trashCount: notes.length });
       } else {
@@ -354,18 +404,21 @@ export const useInbox = create<InboxState>((set, get) => ({
     set({ searchQuery: q });
     if (q.trim().length === 0) set({ searchResults: null });
   },
-  async searchNotes(q) {
+  async searchNotes(q, opts) {
     if (q.trim().length === 0) {
       set({ searchResults: null });
       return;
     }
     const view = get().view;
     // 회고/설정 view 일 때는 status filter 무의미 → 그대로 전체 검색
-    const status = view === 'completed' || view === 'archived' || view === 'trash'
+    const status = view === 'completed' || view === 'trash'
       ? (view === 'trash' ? 'trashed' : view)
       : view === 'inbox' ? 'active' : undefined;
     try {
-      const r = await inboxApi.search(q, status ? { status } : {});
+      // v0.4 Task 18 — opts.notebookId 전달 시 해당 notebook 안 검색, undefined 시 전체 검색.
+      const searchOpts: { status?: NoteStatus; notebookId?: string } = status ? { status: status as NoteStatus } : {};
+      if (opts?.notebookId !== undefined) searchOpts.notebookId = opts.notebookId;
+      const r = await inboxApi.search(q, searchOpts);
       set({ searchResults: r });
     } catch (e) {
       // FTS5 query parse error (special char 미escape) / IPC fail → 빈 결과로.
@@ -386,5 +439,140 @@ export const useInbox = create<InboxState>((set, get) => ({
       console.error('[inbox] loadReview failed', period, e);
       set({ reviewData: { totalCount: 0, tagCounts: [], dueProgress: { total: 0, passed: 0, pending: 0 }, recentNotes: [] } });
     }
+  },
+  // v0.4 — Notebook actions.
+  async loadNotebooks() {
+    const notebooks = await notebookApi.list();
+    const current = get().selectedNotebookId;
+    // selectedNotebookId 가 null 이면 첫 notebook (가장 오래된 = 기본) 으로 설정.
+    const selectedNotebookId = current === null && notebooks.length > 0
+      ? notebooks[0]!.id
+      : current;
+    set({ notebooks, selectedNotebookId });
+  },
+  selectNotebook(id) {
+    set({ selectedNotebookId: id });
+    // v0.4 Task 19 — notebook 전환 시 list + counts 자동 갱신.
+    const v = get().view;
+    if (v === 'inbox' || v === 'completed' || v === 'trash') {
+      void get().loadByView(v);
+    }
+    void get().refreshMeta();
+  },
+  async createNotebook(name, color) {
+    const r = await notebookApi.create({ name, color });
+    if (r.ok) {
+      set({ notebooks: [...get().notebooks, r.notebook] });
+      return { ok: true };
+    }
+    return { ok: false, reason: r.reason };
+  },
+  async renameNotebook(id, name) {
+    const r = await notebookApi.rename(id, name);
+    if (r.ok) {
+      set({ notebooks: get().notebooks.map((n) => n.id === id ? { ...n, name } : n) });
+      return { ok: true };
+    }
+    return { ok: false, reason: r.reason };
+  },
+  async setNotebookColor(id, color) {
+    await notebookApi.setColor(id, color);
+    set({ notebooks: get().notebooks.map((n) => n.id === id ? { ...n, color } : n) });
+  },
+  async deleteNotebook(id) {
+    const r = await notebookApi.delete(id);
+    if (r.ok) {
+      const remaining = get().notebooks.filter((n) => n.id !== id);
+      const wasSelected = get().selectedNotebookId === id;
+      set({
+        notebooks: remaining,
+        selectedNotebookId: wasSelected ? (remaining[0]?.id ?? null) : get().selectedNotebookId
+      });
+      return { ok: true };
+    }
+    return { ok: false, reason: r.reason };
+  },
+  async moveNoteToNotebook(noteId, notebookId) {
+    await notebookApi.moveNote(noteId, notebookId);
+    await get().refreshMeta();
+  },
+  async reorderNotebook(id, direction) {
+    const r = await notebookApi.reorder(id, direction);
+    if (r.ok) {
+      await get().loadNotebooks();
+    }
+  },
+  toggleSidebar() {
+    const next = !get().sidebarVisible;
+    set({ sidebarVisible: next });
+    void inboxApi.setSidebarVisible(next);
+  },
+  // v0.4 Task 11 — promotion candidate actions.
+  async loadPromotionCandidates() {
+    try {
+      const [dismissed, snoozeUntil, raw] = await Promise.all([
+        inboxApi.getPromotionDismissedTags(),
+        inboxApi.getPromotionSnoozeUntil(),
+        inboxApi.listPromotionCandidates()
+      ]);
+      // snoozed_until > now → 빈 배열 (전체 스누즈).
+      if (snoozeUntil > Date.now()) {
+        set({ promotionCandidates: [] });
+        return;
+      }
+      const dismissedSet = new Set(dismissed);
+      const candidates: PromotionCandidate[] = raw
+        .filter((c) => !dismissedSet.has(c.tag))
+        .map((c) => ({ ...c, suggestedName: toTitleCase(c.tag) }));
+      set({ promotionCandidates: candidates });
+    } catch (e) {
+      console.error('[inbox] loadPromotionCandidates failed', e);
+      set({ promotionCandidates: [] });
+    }
+  },
+  async acceptPromotion(tag, customName, color) {
+    const candidate = get().promotionCandidates.find((c) => c.tag === tag);
+    if (!candidate) return;
+    const r = await notebookApi.create({ name: customName, color });
+    if (!r.ok) return;
+    const notebookId = r.notebook.id;
+    await Promise.all(candidate.noteIds.map((noteId) => notebookApi.moveNote(noteId, notebookId)));
+    // state: candidate 제거 + notebooks 갱신 + sidebar 열기 + 새 notebook 선택.
+    set({
+      promotionCandidates: get().promotionCandidates.filter((c) => c.tag !== tag),
+      notebooks: [...get().notebooks, r.notebook],
+      sidebarVisible: true,
+      selectedNotebookId: notebookId
+    });
+    await get().refreshMeta();
+  },
+  async snoozePromotion() {
+    const snoozeUntil = Date.now() + 24 * 60 * 60 * 1000;
+    await inboxApi.setPromotionSnoozeUntil(snoozeUntil);
+    set({ promotionCandidates: [] });
+  },
+  async dismissPromotion(tag) {
+    await inboxApi.addPromotionDismissedTag(tag);
+    set({ promotionCandidates: get().promotionCandidates.filter((c) => c.tag !== tag) });
+  },
+  // v0.4 T5 — AI batch classify actions.
+  async runBatchClassify() {
+    set({ batchClassifying: true });
+    try {
+      const r = await inboxApi.batchClassifyDefault();
+      set({ batchClassifyResult: r, batchClassifying: false });
+    } catch (e) {
+      console.error('[inbox] batchClassify failed', e);
+      set({ batchClassifying: false });
+    }
+  },
+  clearBatchClassify() {
+    set({ batchClassifyResult: null });
+  },
+  async acceptBatchAssignments(accepted) {
+    await Promise.all(accepted.map((a) => notebookApi.moveNote(a.noteId, a.notebookId)));
+    set({ batchClassifyResult: null });
+    await get().refreshMeta();
+    await get().loadByView(get().view as 'inbox' | 'completed' | 'trash');
   }
 }));

src/shared/types.ts

@@ -13,8 +13,9 @@ export interface NoteMedia {
 
 export type AiStatus = 'pending' | 'done' | 'failed' | 'disabled';
 
-// v0.2.9 Cut B — 노트 status 4분기 (사용자 액션). m004 마이그레이션 + setStatus.
-export type NoteStatus = 'active' | 'completed' | 'archived' | 'trashed';
+// v0.2.9 Cut B — 노트 status 3분기 (사용자 액션). m004 마이그레이션 + setStatus.
+// v0.4 Task 16 — 'archived' 제거. m008 마이그레이션이 DB 의 archived 를 completed 로 통합.
+export type NoteStatus = 'active' | 'completed' | 'trashed';
 
 export interface NoteTag {
   name: string;
@@ -92,6 +93,38 @@ export interface Note {
   updatedAt: string;
   tags: NoteTag[];
   media: NoteMedia[];
+  // v0.4 — m008 마이그레이션 보장 (notebook_id NOT NULL, default notebook 자동 할당).
+  notebookId: string;
+}
+
+// v0.4 T4 — AI batch classify 결과.
+export interface BatchClassifyAssignment {
+  noteId: string;
+  notebookId: string | null;
+  notebookName: string | null;
+}
+
+export interface BatchClassifyResult {
+  assignments: BatchClassifyAssignment[];
+  skippedReason?: string;
+}
+
+// v0.4 Task 11 — tag 기반 notebook 승격 제안 후보.
+// suggestedName 은 renderer 가 toTitleCase(tag) 로 채움 — IPC 응답에는 없음.
+export interface PromotionCandidate {
+  tag: string;
+  noteIds: string[];
+  suggestedName: string;
+}
+
+// v0.4 — Notebook: 노트 묶음 단위. noteCount = status='active' 노트 수.
+export interface Notebook {
+  id: string;
+  name: string;
+  color: string | null;
+  createdAt: string;
+  updatedAt: string;
+  noteCount: number;
 }
 
 export interface WeeklyContinuity {
@@ -125,7 +158,7 @@ export interface AutostartResponse {
 }
 
 export interface InboxApi {
-  listNotes(opts: { limit: number; cursor?: string }): Promise<Note[]>;
+  listNotes(opts: { limit: number; cursor?: string; notebookId?: string }): Promise<Note[]>;
   updateAiFields(
     noteId: string,
     fields: { title?: string; summary?: string; tags?: string[] }
@@ -185,8 +218,9 @@ export interface InboxApi {
   // v0.2.8 Cut A — 첨부 이미지를 OS 기본 뷰어로 열기 (Task 3).
   openMedia(relPath: string): Promise<{ ok: true } | { ok: false; reason: string }>;
   // v0.2.9 Cut B Task 4 — status 별 노트 목록 + status 별 count.
-  listByStatus(status: NoteStatus, opts?: { limit?: number }): Promise<Note[]>;
-  countsByStatus(): Promise<{ active: number; completed: number; archived: number; trashed: number }>;
+  // v0.4 — notebookId 옵션 추가. archived 제거 (Task 16 — NoteStatus 에서 제거됨).
+  listByStatus(status: NoteStatus, opts?: { limit?: number; notebookId?: string }): Promise<Note[]>;
+  countsByStatus(opts?: { notebookId?: string }): Promise<{ active: number; completed: number; trashed: number }>;
   // v0.2.9 Cut B Task 8 — 4분기 status 전이 + AI 자동 분류 추천.
   setStatus(
     id: string,
@@ -206,8 +240,13 @@ export interface InboxApi {
     vision_model?: string | null;
     vision_capable_cache?: string[];
     vision_cache_at?: string;
+    // v0.4 — Sidebar UI state 영속화
+    sidebar_visible?: boolean;
+    sidebar_width?: number;
   }>;
   setAiEnabled(enabled: boolean): Promise<{ ok: true }>;
+  setSidebarVisible(visible: boolean): Promise<{ ok: true }>;
+  setSidebarWidth(width: number): Promise<{ ok: true }>;
   setOnboardingCompleted(completed: boolean): Promise<{ ok: true }>;
   // v0.2.9 Cut B Task 16 — ai_status='disabled' 메모 재투입 (사용자가 ai_enabled OFF→ON 전환 시).
   enqueueDisabled(): Promise<{ count: number }>;
@@ -217,7 +256,8 @@ export interface InboxApi {
   listRevisions(noteId: string): Promise<NoteRevision[]>;
   restoreRevision(noteId: string, revId: number): Promise<{ ok: true } | { ok: false; reason: string }>;
   // v0.2.11 Cut D — FTS5 search + 회고 aggregate.
-  search(query: string, opts?: { limit?: number; status?: NoteStatus }): Promise<Note[]>;
+  // v0.4 — notebookId 옵션 추가.
+  search(query: string, opts?: { limit?: number; status?: NoteStatus; notebookId?: string }): Promise<Note[]>;
   reviewAggregate(period: ReviewPeriod): Promise<ReviewAggregate>;
   // v0.3.0 Cut E — 양방향 sync.
   configureSync(url: string | null): Promise<{ ok: true } | { ok: false; reason: string }>;
@@ -231,11 +271,30 @@ export interface InboxApi {
   getVisionModels(): Promise<{ models: string[]; at: string | null; selected: string | null }>;
   setVisionModel(value: string | null): Promise<{ ok: true }>;
   refreshVisionCache(): Promise<{ ok: true; models: string[] } | { ok: false; reason: string }>;
+  // v0.4 T4 — AI batch classify: default notebook 노트 일괄 fit 매칭 (단일 prompt).
+  batchClassifyDefault(): Promise<BatchClassifyResult>;
+  // v0.4 Task 11 — promotion candidates + dismissed/snoozed 영속화.
+  listPromotionCandidates(): Promise<PromotionCandidate[]>;
+  getPromotionDismissedTags(): Promise<string[]>;
+  addPromotionDismissedTag(tag: string): Promise<void>;
+  getPromotionSnoozeUntil(): Promise<number>;
+  setPromotionSnoozeUntil(ms: number): Promise<void>;
+}
+
+export interface NotebookApi {
+  list(): Promise<Notebook[]>;
+  create(input: { name: string; color?: string }): Promise<{ ok: true; notebook: Notebook } | { ok: false; reason: string }>;
+  rename(id: string, name: string): Promise<{ ok: true } | { ok: false; reason: string }>;
+  setColor(id: string, color: string | null): Promise<{ ok: true }>;
+  delete(id: string): Promise<{ ok: true } | { ok: false; reason: 'has_notes' | 'not_found' }>;
+  moveNote(noteId: string, notebookId: string): Promise<{ ok: true }>;
+  reorder(id: string, direction: 'up' | 'down'): Promise<{ ok: boolean }>;
 }
 
 export interface InklingApi {
   capture: CaptureApi;
   inbox: InboxApi;
+  notebook: NotebookApi;
 }
 
 export {};

tests/unit/AiWorker.test.ts

@@ -14,7 +14,7 @@ function makeProvider(overrides: Partial<InferenceProvider> = {}): InferenceProv
   return {
     name: 'mock',
     generate: vi.fn(async (): Promise<AiResponse> => ({
-      title: '제목', summary: 'a\nb\nc', tags: ['tag'], dueDate: null
+      title: '제목', summary: 'a\nb\nc', tags: ['tag'], dueDate: null, notebookMatch: null
     })),
     healthCheck: vi.fn(async () => ({ ok: true })),
     ...overrides
@@ -77,7 +77,7 @@ describe('AiWorker', () => {
         running++; max = Math.max(max, running);
         await new Promise((r) => setTimeout(r, 10));
         running--;
-        return { title: '제목', summary: 'a\nb\nc', tags: [], dueDate: null };
+        return { title: '제목', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
       })
     });
     const w = new AiWorker(repo, new ProviderHolder(provider), { backoffsMs: [0, 0, 0] });
@@ -137,7 +137,8 @@ describe('AiWorker', () => {
         title: '아무 메모',
         summary: 'a\nb\nc',
         tags: [],
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }),
       healthCheck: async () => ({ ok: true })
     } as any;
@@ -159,7 +160,7 @@ describe('AiWorker', () => {
       generate: async (input: any) => {
         seen.todayKst = input.todayKst;
         seen.dueDateCandidates = input.dueDateCandidates;
-        return { title: '메모', summary: 'a\nb\nc', tags: [], dueDate: null };
+        return { title: '메모', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
       },
       healthCheck: async () => ({ ok: true })
     } as any;
@@ -181,7 +182,7 @@ describe('AiWorker', () => {
       name: 'mock',
       generate: async (input: any) => {
         captured = input;
-        return { title: '내일', summary: 'a\nb\nc', tags: [], dueDate: null };
+        return { title: '내일', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
       },
       healthCheck: async () => ({ ok: true })
     } as any;
@@ -409,7 +410,7 @@ describe('AiWorker — unreachable/timeout infinite retry (v0.2.3 #2)', () => {
       generate: vi.fn(async (): Promise<AiResponse> => {
         callCount += 1;
         if (callCount <= 2) throw new Error('ECONNREFUSED');
-        return { title: 't', summary: 's', tags: [], dueDate: null };
+        return { title: 't', summary: 's', tags: [], dueDate: null, notebookMatch: null };
       })
     });
     const w = new AiWorker(repo, new ProviderHolder(provider), {
@@ -442,7 +443,7 @@ describe('AiWorker — vocab fetch + per-tag hit/miss (v0.2.3 #3 T7)', () => {
 
     const { id } = repo.create({ rawText: 'x' });
     const generateMock = vi.fn(async () => ({
-      title: '제목', summary: 'a\nb\nc', tags: ['design'], dueDate: null
+      title: '제목', summary: 'a\nb\nc', tags: ['design'], dueDate: null, notebookMatch: null
     }));
     const w = new AiWorker(repo, new ProviderHolder(makeProvider({ generate: generateMock })), {
       backoffsMs: [0, 0, 0]
@@ -465,7 +466,8 @@ describe('AiWorker — vocab fetch + per-tag hit/miss (v0.2.3 #3 T7)', () => {
       generate: vi.fn(async () => ({
         title: 't', summary: 'a\nb\nc',
         tags: ['design', 'newtag'],  // 1 hit + 1 miss
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }))
     });
     const emits: EmittedEvent[] = [];
@@ -495,7 +497,8 @@ describe('AiWorker — vocab fetch + per-tag hit/miss (v0.2.3 #3 T7)', () => {
       generate: vi.fn(async () => ({
         title: 't', summary: 'a\nb\nc',
         tags: ['design', 'meeting', 'qa'],
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }))
     });
     const emits: EmittedEvent[] = [];
@@ -520,7 +523,8 @@ describe('AiWorker — vocab fetch + per-tag hit/miss (v0.2.3 #3 T7)', () => {
       generate: vi.fn(async () => ({
         title: 't', summary: 'a\nb\nc',
         tags: ['design', 'meeting', 'qa'],
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }))
     });
     const emits: EmittedEvent[] = [];
@@ -544,7 +548,8 @@ describe('AiWorker — vocab fetch + per-tag hit/miss (v0.2.3 #3 T7)', () => {
       generate: vi.fn(async () => ({
         title: 't', summary: 'a\nb\nc',
         tags: ['design', 'design', 'meeting'],  // 중복 'design' 의도적
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }))
     });
     const emits: EmittedEvent[] = [];
@@ -561,6 +566,104 @@ describe('AiWorker — vocab fetch + per-tag hit/miss (v0.2.3 #3 T7)', () => {
   });
 });
 
+describe('AiWorker notebook matching', () => {
+  let db: Database.Database;
+  let repo: NoteRepository;
+
+  beforeEach(() => {
+    db = new Database(':memory:');
+    runMigrations(db);
+    repo = new NoteRepository(db);
+  });
+
+  it('AI 응답의 notebookMatch 가 valid 이름이면 moveNote 호출', async () => {
+    const moveNote = vi.fn();
+    const notebookRepo = {
+      list: () => [{ id: 'nb-회사', name: '회사', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 }],
+      findByName: (n: string) => n === '회사' ? { id: 'nb-회사', name: '회사', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 } : null,
+      moveNote
+    };
+    const provider = makeProvider({
+      generate: vi.fn(async (): Promise<AiResponse> => ({
+        title: '제목', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: '회사'
+      }))
+    });
+    const { id } = repo.create({ rawText: '회사 업무' });
+    const w = new AiWorker(repo, new ProviderHolder(provider), {
+      backoffsMs: [0],
+      notebookRepo
+    });
+    await w.enqueue(id);
+    await w.drain();
+    expect(moveNote).toHaveBeenCalledWith(id, 'nb-회사');
+  });
+
+  it('AI 응답 notebookMatch null 시 moveNote 호출 X', async () => {
+    const moveNote = vi.fn();
+    const notebookRepo = {
+      list: () => [{ id: 'nb-회사', name: '회사', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 }],
+      findByName: (_n: string) => null,
+      moveNote
+    };
+    const provider = makeProvider({
+      generate: vi.fn(async (): Promise<AiResponse> => ({
+        title: '제목', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null
+      }))
+    });
+    const { id } = repo.create({ rawText: '일반 메모' });
+    const w = new AiWorker(repo, new ProviderHolder(provider), {
+      backoffsMs: [0],
+      notebookRepo
+    });
+    await w.enqueue(id);
+    await w.drain();
+    expect(moveNote).not.toHaveBeenCalled();
+  });
+
+  it('notebooks 배열을 provider.generate 에 전달', async () => {
+    let capturedNotebooks: string[] | undefined;
+    const notebookRepo = {
+      list: () => [
+        { id: 'nb-1', name: '회사', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 },
+        { id: 'nb-2', name: '개인', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 }
+      ],
+      findByName: (_n: string) => null,
+      moveNote: vi.fn()
+    };
+    const provider = makeProvider({
+      generate: vi.fn(async (input: any): Promise<AiResponse> => {
+        capturedNotebooks = input.notebooks;
+        return { title: '제목', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
+      })
+    });
+    const { id } = repo.create({ rawText: '테스트' });
+    const w = new AiWorker(repo, new ProviderHolder(provider), {
+      backoffsMs: [0],
+      notebookRepo
+    });
+    await w.enqueue(id);
+    await w.drain();
+    expect(capturedNotebooks).toEqual(['회사', '개인']);
+  });
+
+  it('notebookRepo 미전달 시 notebooks 빈 배열 전달 + moveNote 호출 X', async () => {
+    let capturedNotebooks: string[] | undefined;
+    const provider = makeProvider({
+      generate: vi.fn(async (input: any): Promise<AiResponse> => {
+        capturedNotebooks = input.notebooks;
+        return { title: '제목', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: '회사' };
+      })
+    });
+    const { id } = repo.create({ rawText: '테스트' });
+    const w = new AiWorker(repo, new ProviderHolder(provider), { backoffsMs: [0] });
+    await w.enqueue(id);
+    await w.drain();
+    expect(capturedNotebooks).toEqual([]);
+    // notebookRepo 없으므로 moveNote 미호출 — note 는 done 상태
+    expect(repo.findById(id)?.aiStatus).toBe('done');
+  });
+});
+
 describe('vocab COLLATE NOCASE', () => {
   let db: Database.Database;
   let repo: NoteRepository;
@@ -581,7 +684,8 @@ describe('vocab COLLATE NOCASE', () => {
       generate: vi.fn(async () => ({
         title: 't', summary: 'a\nb\nc',
         tags: ['Design'],  // AI returns capitalized — DB COLLATE NOCASE matches 'design'
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }))
     });
     const emits: EmittedEvent[] = [];
@@ -610,7 +714,8 @@ describe('vocab COLLATE NOCASE', () => {
       generate: vi.fn(async () => ({
         title: 't', summary: 'a\nb\nc',
         tags: ['design'],  // AI returns lowercase — DB COLLATE NOCASE matches 'Design'
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }))
     });
     const emits: EmittedEvent[] = [];
@@ -634,7 +739,8 @@ describe('vocab COLLATE NOCASE', () => {
       generate: vi.fn(async () => ({
         title: 't', summary: 'a\nb\nc',
         tags: ['design'],  // same lowercase — should still hit
-        dueDate: null
+        dueDate: null,
+        notebookMatch: null
       }))
     });
     const emits: EmittedEvent[] = [];

tests/unit/AiWorker.vision.test.ts

@@ -65,7 +65,7 @@ describe('AiWorker — vision path (v0.3.1 Cut F)', () => {
       opts?: Parameters<InferenceProvider['generate']>[1]
     ): Promise<AiResponse> => {
       calls.push([input, opts]);
-      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null };
+      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
     });
     const getVisionModel = vi.fn(async (): Promise<string | null> => 'gemma3:12b-vision');
     const worker = makeWorker(generate, getVisionModel);
@@ -87,7 +87,7 @@ describe('AiWorker — vision path (v0.3.1 Cut F)', () => {
       opts?: Parameters<InferenceProvider['generate']>[1]
     ): Promise<AiResponse> => {
       calls.push([input, opts]);
-      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null };
+      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
     });
     const getVisionModel = vi.fn(async (): Promise<string | null> => null);
     const worker = makeWorker(generate, getVisionModel);
@@ -110,7 +110,7 @@ describe('AiWorker — vision path (v0.3.1 Cut F)', () => {
       opts?: Parameters<InferenceProvider['generate']>[1]
     ): Promise<AiResponse> => {
       calls.push([input, opts]);
-      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null };
+      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
     });
     const getVisionModel = vi.fn(async (): Promise<string | null> => 'gemma4:26b');
     const worker = makeWorker(generate, getVisionModel);
@@ -136,7 +136,7 @@ describe('AiWorker — vision path (v0.3.1 Cut F)', () => {
       { noteId: id, kind: 'image', relPath: `media/${id}/1.png`, mime: 'image/png', bytes: 1 },
       { noteId: id, kind: 'image', relPath: `media/${id}/2.png`, mime: 'image/png', bytes: 1 }
     ]);
-    const generate = vi.fn(async (): Promise<AiResponse> => ({ title: 't', summary: 'a\nb\nc', tags: [], dueDate: null }));
+    const generate = vi.fn(async (): Promise<AiResponse> => ({ title: 't', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null }));
     const getVisionModel = vi.fn(async (): Promise<string | null> => 'gemma4:26b');
     const worker = makeWorker(generate, getVisionModel);
     await worker.enqueue(id);
@@ -157,7 +157,7 @@ describe('AiWorker — vision path (v0.3.1 Cut F)', () => {
       opts?: Parameters<InferenceProvider['generate']>[1]
     ): Promise<AiResponse> => {
       calls.push([input, opts]);
-      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null };
+      return { title: 't', summary: 'a\nb\nc', tags: [], dueDate: null, notebookMatch: null };
     });
     const getVisionModel = vi.fn(async (): Promise<string | null> => 'gemma3:12b-vision');
     const worker = makeWorker(generate, getVisionModel);

tests/unit/App.test.tsx

@@ -4,10 +4,13 @@ import '@testing-library/jest-dom/vitest';
 import { render, screen, fireEvent, cleanup, waitFor } from '@testing-library/react';
 
 vi.mock('../../src/renderer/inbox/api.js', () => ({
+  notebookApi: {
+    list: vi.fn(async () => [])
+  },
   inboxApi: {
     listNotes: vi.fn(async () => []),
     listByStatus: vi.fn(async () => []),
-    countsByStatus: vi.fn(async () => ({ active: 0, completed: 0, archived: 0, trashed: 0 })),
+    countsByStatus: vi.fn(async () => ({ active: 0, completed: 0, trashed: 0 })),
     getContinuity: vi.fn(async () => ({
       weekStart: '', weekCount: 0, weekTarget: 7,
       consecutiveCompleteWeeks: 0, showRecoveryToast: false, lastNoteAt: null
@@ -53,6 +56,8 @@ vi.mock('../../src/renderer/inbox/api.js', () => ({
     // v0.2.9 Cut B Task 12 — onboarding wizard 분기. default 는 onboarding_completed=true 라 wizard 미표시.
     getSettings: vi.fn(async () => ({ onboarding_completed: true })),
     setAiEnabled: vi.fn(async () => ({ ok: true as const })),
+    setSidebarVisible: vi.fn(async () => ({ ok: true as const })),
+    setSidebarWidth: vi.fn(async () => ({ ok: true as const })),
     setOnboardingCompleted: vi.fn(async () => ({ ok: true as const })),
     // v0.2.9 Cut B Task 16 — AiProviderSection 가 SettingsPage 렌더 시 호출.
     getDisabledCount: vi.fn(async () => 0),
@@ -66,7 +71,11 @@ vi.mock('../../src/renderer/inbox/api.js', () => ({
     // v0.3.1 Cut F — VisionSection 이 AiProviderSection 에 마운트되어 호출.
     getVisionModels: vi.fn(async () => ({ models: [], at: null, selected: null })),
     setVisionModel: vi.fn(async () => ({ ok: true as const })),
-    refreshVisionCache: vi.fn(async () => ({ ok: true as const, models: [] }))
+    refreshVisionCache: vi.fn(async () => ({ ok: true as const, models: [] })),
+    // v0.4 Task 15 — loadPromotionCandidates 초기화 stub.
+    listPromotionCandidates: vi.fn(async () => []),
+    getPromotionDismissedTags: vi.fn(async () => []),
+    getPromotionSnoozeUntil: vi.fn(async () => 0)
   }
 }));
 
@@ -79,9 +88,10 @@ describe('App — settings view', () => {
     cleanup();
     useInbox.setState({
       view: 'inbox',
-      counts: { active: 0, completed: 0, archived: 0, trashed: 0 },
+      counts: { active: 0, completed: 0, trashed: 0 },
       showSettings: false, showTrash: false,
-      notes: [], trashNotes: [], trashCount: 0
+      notes: [], trashNotes: [], trashCount: 0,
+      sidebarVisible: false, notebooks: [], promotionCandidates: []
     });
   });
 
@@ -114,48 +124,67 @@ describe('App — settings view', () => {
   });
 });
 
-describe('App header — 4 tabs', () => {
+describe('App header — 3 tabs (v0.4)', () => {
   beforeEach(() => {
     cleanup();
     useInbox.setState({
       view: 'inbox',
-      counts: { active: 5, completed: 3, archived: 2, trashed: 1 },
+      counts: { active: 5, completed: 3, trashed: 1 },
       notes: [], trashNotes: [], trashCount: 0,
-      showTrash: false, showSettings: false
+      showTrash: false, showSettings: false,
+      sidebarVisible: false, notebooks: [], promotionCandidates: []
     });
     // loadInitial 이 비동기로 counts 를 덮어씀 — onboarding wizard async gate (Task 12) 도입
     // 후 render 가 await 후 발생하므로 mock 의 countsByStatus 가 테스트 기대값을 반환하도록 갱신.
-    vi.mocked(inboxApi.countsByStatus).mockResolvedValue({ active: 5, completed: 3, archived: 2, trashed: 1 });
+    // v0.4 Task 16 — countsByStatus 응답에서 archived 제거 (NoteStatus 에서 삭제됨).
+    vi.mocked(inboxApi.countsByStatus).mockResolvedValue({ active: 5, completed: 3, trashed: 1 });
   });
 
-  it('renders 4 tabs with counts', async () => {
+  it('renders 3 tabs (Inbox/완료/휴지통) with counts', async () => {
     render(<App />);
     expect(await screen.findByRole('tab', { name: /Inbox\(5\)/ })).toBeInTheDocument();
     expect(screen.getByRole('tab', { name: /완료\(3\)/ })).toBeInTheDocument();
-    expect(screen.getByRole('tab', { name: /보관\(2\)/ })).toBeInTheDocument();
     expect(screen.getByRole('tab', { name: /휴지통\(1\)/ })).toBeInTheDocument();
   });
 
+  it('보관 탭이 헤더에 없음', async () => {
+    render(<App />);
+    await screen.findByRole('tab', { name: /Inbox/ });
+    expect(screen.queryByRole('tab', { name: /보관/ })).toBeNull();
+  });
+
   it('clicking 완료 tab sets view=completed', async () => {
     render(<App />);
     fireEvent.click(await screen.findByRole('tab', { name: /완료/ }));
     expect(useInbox.getState().view).toBe('completed');
   });
 
-  it('aria-selected reflects current view', async () => {
-    useInbox.setState({ view: 'archived' });
-    render(<App />);
-    const archivedBtn = await screen.findByRole('tab', { name: /보관/ });
-    expect(archivedBtn.getAttribute('aria-selected')).toBe('true');
-    const inboxBtn = screen.getByRole('tab', { name: /Inbox/ });
-    expect(inboxBtn.getAttribute('aria-selected')).toBe('false');
-  });
-
   it('inbox tab has aria-selected="true" when active', async () => {
     render(<App />);
     const inboxTab = await screen.findByRole('tab', { name: /Inbox/ });
     expect(inboxTab).toHaveAttribute('aria-selected', 'true');
   });
+
+  it('Cmd+B 키 이벤트가 toggleSidebar 호출', async () => {
+    // loadInitial 의 getSettings hydrate 후 state 가 정해진 시점 기준으로 토글 검증.
+    vi.mocked(inboxApi.getSettings).mockResolvedValue({ onboarding_completed: true, sidebar_visible: false });
+    render(<App />);
+    await screen.findByRole('tab', { name: /Inbox/ });
+    const initialVisible = useInbox.getState().sidebarVisible;
+    // jsdom 에서 navigator.platform = '' → isMac=false → ctrlKey 로 판단.
+    window.dispatchEvent(new KeyboardEvent('keydown', { key: 'b', ctrlKey: true, bubbles: true }));
+    // toggleSidebar 가 호출되면 sidebarVisible 이 반전됨.
+    expect(useInbox.getState().sidebarVisible).toBe(!initialVisible);
+  });
+
+  it('Sidebar 컴포넌트가 렌더 트리에 포함됨 (sidebarVisible=true)', async () => {
+    // loadInitial 의 getSettings 가 sidebar_visible=true 반환 (Strict Mode 중복 호출 대비 mockResolvedValue).
+    vi.mocked(inboxApi.getSettings).mockResolvedValue({ onboarding_completed: true, sidebar_visible: true });
+    render(<App />);
+    await screen.findByRole('tab', { name: /Inbox/ });
+    // loadInitial 비동기 hydrate 가 완료될 때까지 기다림
+    await waitFor(() => expect(document.querySelector('aside')).not.toBeNull());
+  });
 });
 
 describe('App — onboarding wizard', () => {
@@ -163,9 +192,10 @@ describe('App — onboarding wizard', () => {
     cleanup();
     useInbox.setState({
       view: 'inbox',
-      counts: { active: 0, completed: 0, archived: 0, trashed: 0 },
+      counts: { active: 0, completed: 0, trashed: 0 },
       showSettings: false, showTrash: false,
-      notes: [], trashNotes: [], trashCount: 0
+      notes: [], trashNotes: [], trashCount: 0,
+      sidebarVisible: false, notebooks: [], promotionCandidates: []
     });
     // 각 테스트가 getSettings 의 default mock 을 직접 override.
     vi.mocked(inboxApi.getSettings).mockResolvedValue({ onboarding_completed: true });

tests/unit/BatchMoveModal.test.tsx

@@ -0,0 +1,143 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import '@testing-library/jest-dom/vitest';
+import { render, screen, fireEvent, cleanup, waitFor } from '@testing-library/react';
+import React from 'react';
+
+const { mockMoveNote, mockBatchClassifyDefault } = vi.hoisted(() => ({
+  mockMoveNote: vi.fn(async () => ({ ok: true as const })),
+  mockBatchClassifyDefault: vi.fn(async () => ({ assignments: [] }))
+}));
+
+vi.mock('../../src/renderer/inbox/api.js', () => ({
+  inboxApi: {
+    batchClassifyDefault: mockBatchClassifyDefault,
+    getContinuity: vi.fn(async () => ({ weekStart: '', weekCount: 0, weekTarget: 7, consecutiveCompleteWeeks: 0, showRecoveryToast: false, lastNoteAt: null })),
+    countsByStatus: vi.fn(async () => ({ active: 0, completed: 0, trashed: 0 })),
+    getSettings: vi.fn(async () => ({ ai_enabled: true })),
+    getPendingCount: vi.fn(async () => 0),
+    getOllamaStatus: vi.fn(async () => ({ ok: true })),
+    getTodayCount: vi.fn(async () => 0),
+    getTrashCount: vi.fn(async () => 0),
+    listExpired: vi.fn(async () => []),
+    getFailedCount: vi.fn(async () => 0),
+    listRecallCandidate: vi.fn(async () => null),
+    listByStatus: vi.fn(async () => [])
+  },
+  notebookApi: {
+    moveNote: mockMoveNote,
+    list: vi.fn(async () => [])
+  }
+}));
+
+import { BatchMoveModal } from '../../src/renderer/inbox/components/BatchMoveModal';
+import { useInbox } from '../../src/renderer/inbox/store';
+
+const baseNote = {
+  id: 'n1',
+  rawText: '테스트 노트 내용',
+  aiTitle: 'AI 제목',
+  aiSummary: null,
+  aiStatus: 'done' as const,
+  aiError: null,
+  aiProvider: null,
+  aiGeneratedAt: null,
+  titleEditedByUser: false,
+  summaryEditedByUser: false,
+  userIntent: null,
+  intentPromptedAt: null,
+  dueDate: null,
+  dueDateEditedByUser: false,
+  deletedAt: null,
+  lastRecalledAt: null,
+  recallDismissedAt: null,
+  status: 'active' as const,
+  statusChangedAt: null,
+  moveReason: null,
+  createdAt: '2026-01-01T00:00:00Z',
+  updatedAt: '2026-01-01T00:00:00Z',
+  tags: [],
+  media: [],
+  notebookId: 'nb-default'
+};
+
+describe('BatchMoveModal', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    cleanup();
+    useInbox.setState({
+      batchClassifyResult: null,
+      batchClassifying: false,
+      notes: [],
+      notebooks: []
+    } as Partial<ReturnType<typeof useInbox.getState>>);
+  });
+
+  it('batchClassifyResult null 시 null 반환', () => {
+    useInbox.setState({ batchClassifyResult: null } as Partial<ReturnType<typeof useInbox.getState>>);
+    const { container } = render(<BatchMoveModal />);
+    expect(container).toBeEmptyDOMElement();
+  });
+
+  it('actionable 0건 시 "찾지 못했어요" 메시지 표시', () => {
+    useInbox.setState({
+      batchClassifyResult: { assignments: [{ noteId: 'n1', notebookId: null, notebookName: null }] }
+    } as Partial<ReturnType<typeof useInbox.getState>>);
+    render(<BatchMoveModal />);
+    expect(screen.getByText(/찾지 못했어요/)).toBeInTheDocument();
+  });
+
+  it('actionable 노트 표시 + checkbox 기본 체크', () => {
+    useInbox.setState({
+      batchClassifyResult: {
+        assignments: [
+          { noteId: 'n1', notebookId: 'nb1', notebookName: '업무' }
+        ]
+      },
+      notes: [{ ...baseNote, id: 'n1', aiTitle: 'AI 제목' }]
+    } as Partial<ReturnType<typeof useInbox.getState>>);
+    render(<BatchMoveModal />);
+    expect(screen.getByText('AI 제목')).toBeInTheDocument();
+    expect(screen.getByText(/→ 업무/)).toBeInTheDocument();
+    const checkbox = screen.getByRole('checkbox') as HTMLInputElement;
+    expect(checkbox.checked).toBe(true);
+  });
+
+  it('checkbox toggle 시 selectedIds 변경 (체크 해제 후 확인 버튼 비활성)', () => {
+    useInbox.setState({
+      batchClassifyResult: {
+        assignments: [
+          { noteId: 'n1', notebookId: 'nb1', notebookName: '업무' }
+        ]
+      },
+      notes: [{ ...baseNote, id: 'n1' }]
+    } as Partial<ReturnType<typeof useInbox.getState>>);
+    render(<BatchMoveModal />);
+    const checkbox = screen.getByRole('checkbox') as HTMLInputElement;
+    expect(checkbox.checked).toBe(true);
+
+    fireEvent.click(checkbox);
+    expect(checkbox.checked).toBe(false);
+    const confirmBtn = screen.getByRole('button', { name: /건 이동/ });
+    expect(confirmBtn).toBeDisabled();
+  });
+
+  it('확인 클릭 → acceptBatchAssignments 호출 후 modal 닫힘', async () => {
+    const mockAccept = vi.fn(async () => {});
+    useInbox.setState({
+      batchClassifyResult: {
+        assignments: [
+          { noteId: 'n1', notebookId: 'nb1', notebookName: '업무' }
+        ]
+      },
+      notes: [{ ...baseNote, id: 'n1' }],
+      acceptBatchAssignments: mockAccept
+    } as Partial<ReturnType<typeof useInbox.getState>>);
+    render(<BatchMoveModal />);
+    const confirmBtn = screen.getByRole('button', { name: /건 이동/ });
+    fireEvent.click(confirmBtn);
+    await waitFor(() => {
+      expect(mockAccept).toHaveBeenCalledWith([{ noteId: 'n1', notebookId: 'nb1' }]);
+    });
+  });
+});

tests/unit/ImportService.applySyncFromDir.test.ts

@@ -77,7 +77,7 @@ describe('ImportService.applySyncFromDir', () => {
     expect(note?.rawText).toBe('new body');
   });
 
-  it('preserves status field from frontmatter', async () => {
+  it('preserves status field from frontmatter (archived coerced to completed — v0.4 Task 16)', async () => {
     const notesDir = join(workDir, 'notes');
     await mkdir(notesDir, { recursive: true });
     await writeFile(
@@ -86,7 +86,8 @@ describe('ImportService.applySyncFromDir', () => {
     );
     await svc.applySyncFromDir(workDir);
     const note = repo.findById('00000000-0000-0000-0000-000000000002');
-    expect(note?.status).toBe('archived');
+    // archived → completed coerce (m008 와 동일 정책, NoteStatus 에서 archived 삭제됨).
+    expect(note?.status).toBe('completed');
     expect(note?.statusChangedAt).toBe('2026-05-08T00:00:00Z');
     expect(note?.moveReason).toBe('done');
   });

tests/unit/MoveStatusModal.test.tsx

@@ -26,7 +26,7 @@ describe('MoveStatusModal', () => {
     cleanup();
   });
 
-  it('renders reason textarea + 4 buttons + AI classify button', () => {
+  it('renders reason textarea + 3 buttons + AI classify button (v0.4 — 보관 제거)', () => {
     render(
       <MoveStatusModal
         noteId="n1"
@@ -39,7 +39,7 @@ describe('MoveStatusModal', () => {
     );
     expect(screen.getByRole('textbox')).toBeInTheDocument();
     expect(screen.getByRole('button', { name: '완료' })).toBeInTheDocument();
-    expect(screen.getByRole('button', { name: '보관' })).toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: '보관' })).toBeNull();
     expect(screen.getByRole('button', { name: '휴지통' })).toBeInTheDocument();
     expect(screen.getByRole('button', { name: /AI 자동 분류/ })).toBeInTheDocument();
   });
@@ -84,7 +84,7 @@ describe('MoveStatusModal', () => {
     await waitFor(() => expect(onMoved).toHaveBeenCalledWith('completed', '결재 끝'));
   });
 
-  it('currentStatus=completed → Inbox/보관/휴지통 노출, 완료 미노출', () => {
+  it('currentStatus=completed → Inbox/휴지통 노출, 완료/보관 미노출 (v0.4 — 보관 제거)', () => {
     render(
       <MoveStatusModal
         noteId="n1"
@@ -96,31 +96,14 @@ describe('MoveStatusModal', () => {
       />
     );
     expect(screen.getByRole('button', { name: 'Inbox' })).toBeInTheDocument();
-    expect(screen.getByRole('button', { name: '보관' })).toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: '보관' })).toBeNull();
     expect(screen.getByRole('button', { name: '휴지통' })).toBeInTheDocument();
     expect(screen.queryByRole('button', { name: '완료' })).toBeNull();
   });
 
-  it('currentStatus=archived → Inbox 버튼 클릭 시 setStatus("active") 호출', async () => {
-    const onMoved = vi.fn();
-    render(
-      <MoveStatusModal
-        noteId="n1"
-        rawText="t"
-        summary=""
-        currentStatus="archived"
-        onClose={vi.fn()}
-        onMoved={onMoved}
-      />
-    );
-    fireEvent.click(screen.getByRole('button', { name: 'Inbox' }));
-    await waitFor(() => {
-      expect(mockSetStatus).toHaveBeenCalledWith('n1', 'active', null);
-      expect(onMoved).toHaveBeenCalledWith('active', null);
-    });
-  });
+  // v0.4 Task 16 — currentStatus=archived 는 NoteStatus 에서 제거됨. 테스트 제거.
 
-  it('currentStatus=trashed → Inbox/완료/보관 노출, 휴지통 미노출', () => {
+  it('currentStatus=trashed → Inbox/완료 노출, 휴지통/보관 미노출 (v0.4 — 보관 제거)', () => {
     render(
       <MoveStatusModal
         noteId="n1"
@@ -133,7 +116,7 @@ describe('MoveStatusModal', () => {
     );
     expect(screen.getByRole('button', { name: 'Inbox' })).toBeInTheDocument();
     expect(screen.getByRole('button', { name: '완료' })).toBeInTheDocument();
-    expect(screen.getByRole('button', { name: '보관' })).toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: '보관' })).toBeNull();
     expect(screen.queryByRole('button', { name: '휴지통' })).toBeNull();
   });
 
@@ -185,7 +168,7 @@ describe('MoveStatusModal', () => {
         onMoved={onMoved}
       />
     );
-    fireEvent.click(screen.getByRole('button', { name: '보관' }));
-    await waitFor(() => expect(mockSetStatus).toHaveBeenCalledWith('n1', 'archived', null));
+    fireEvent.click(screen.getByRole('button', { name: '완료' }));
+    await waitFor(() => expect(mockSetStatus).toHaveBeenCalledWith('n1', 'completed', null));
   });
 });

tests/unit/NoteCard.test.tsx

@@ -2,16 +2,17 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import '@testing-library/jest-dom/vitest';
 import { render, screen, fireEvent, cleanup, waitFor } from '@testing-library/react';
-import type { Note } from '@shared/types';
+import type { Note, Notebook } from '@shared/types';
 
-const { mockOpenMedia, mockSetStatus, mockClassify, mockUpdateRawText } = vi.hoisted(() => ({
+const { mockOpenMedia, mockSetStatus, mockClassify, mockUpdateRawText, mockMoveNoteToNotebook } = vi.hoisted(() => ({
   mockOpenMedia: vi.fn(async () => ({ ok: true })),
   mockSetStatus: vi.fn(async () => ({ ok: true as const })),
   mockClassify: vi.fn(async () => ({
     recommended: 'archived' as const,
     rationale: 'stub'
   })),
-  mockUpdateRawText: vi.fn(async () => ({ ok: true as const }))
+  mockUpdateRawText: vi.fn(async () => ({ ok: true as const })),
+  mockMoveNoteToNotebook: vi.fn(async () => {})
 }));
 
 vi.mock('../../src/renderer/inbox/api.js', () => ({
@@ -33,9 +34,24 @@ vi.mock('../../src/renderer/inbox/api.js', () => ({
 }));
 
 const mockRefreshMeta = vi.fn();
+
+// Notebooks used across notebook-chip tests.
+const stubNotebooks: Notebook[] = [
+  { id: 'nb-1', name: '회사', color: '#4a90d9', createdAt: '2026-01-01T00:00:00Z', updatedAt: '2026-01-01T00:00:00Z', noteCount: 1 },
+  { id: 'nb-2', name: '개인', color: '#e67e22', createdAt: '2026-01-01T00:00:00Z', updatedAt: '2026-01-01T00:00:00Z', noteCount: 0 }
+];
+
 vi.mock('../../src/renderer/inbox/store.js', () => ({
   useInbox: Object.assign(
-    () => ({}),
+    // Selector-aware: if selector is a function, call it with the mock state.
+    (selector?: (s: unknown) => unknown) => {
+      const state = {
+        notebooks: stubNotebooks,
+        moveNoteToNotebook: mockMoveNoteToNotebook
+      };
+      if (typeof selector === 'function') return selector(state);
+      return state;
+    },
     { getState: () => ({ setTagFilter: vi.fn(), refreshMeta: mockRefreshMeta }) }
   )
 }));
@@ -69,7 +85,8 @@ const baseNote: Note = {
   media: [
     { id: 'm1', kind: 'image', relPath: 'media/n1/img1.png', mime: 'image/png', bytes: 100 },
     { id: 'm2', kind: 'image', relPath: 'media/n1/img2.jpg', mime: 'image/jpeg', bytes: 200 }
-  ]
+  ],
+  notebookId: 'nb-default'
 };
 
 describe('NoteCard — image rendering', () => {
@@ -189,3 +206,34 @@ describe('NoteCard — raw_text editing', () => {
     expect(last.rawText).toBe('new');
   });
 });
+
+describe('NoteCard — notebook chip (Task 17)', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    cleanup();
+  });
+
+  it('현재 notebook 이름 chip 렌더링', () => {
+    render(<NoteCard note={{ ...baseNote, notebookId: 'nb-1' }} onUpdated={vi.fn()} mode="inbox" />);
+    expect(screen.getByTitle('다른 노트북으로 이동')).toBeInTheDocument();
+    expect(screen.getByTitle('다른 노트북으로 이동').textContent).toContain('회사');
+  });
+
+  it('chip 클릭 → 다른 notebook 목록 dropdown', () => {
+    render(<NoteCard note={{ ...baseNote, notebookId: 'nb-1' }} onUpdated={vi.fn()} mode="inbox" />);
+    fireEvent.click(screen.getByTitle('다른 노트북으로 이동'));
+    // 현재 nb-1('회사') 는 제외, nb-2('개인') 만 보임.
+    expect(screen.getByText('개인')).toBeInTheDocument();
+    // chip 자체 text 는 "📓 회사 ▾" 이라 정확 매칭 X → regex 로 chip 안에만 '회사' 존재 확인.
+    expect(screen.queryAllByText(/회사/).length).toBe(1);
+  });
+
+  it('dropdown 의 notebook 클릭 → store.moveNoteToNotebook 호출', async () => {
+    render(<NoteCard note={{ ...baseNote, notebookId: 'nb-1' }} onUpdated={vi.fn()} mode="inbox" />);
+    fireEvent.click(screen.getByTitle('다른 노트북으로 이동'));
+    fireEvent.click(screen.getByText('개인'));
+    await waitFor(() => {
+      expect(mockMoveNoteToNotebook).toHaveBeenCalledWith('n1', 'nb-2');
+    });
+  });
+});

tests/unit/NoteRepository.test.ts

@@ -940,9 +940,9 @@ describe('NoteRepository — setStatus + listByStatus', () => {
 
   it('setStatus accepts null reason', () => {
     const { id } = repo.create({ rawText: 'test' });
-    repo.setStatus(id, 'archived', null, new Date('2026-05-10T00:00:00.000Z'));
+    repo.setStatus(id, 'completed', null, new Date('2026-05-10T00:00:00.000Z'));
     const note = repo.findById(id)!;
-    expect(note.status).toBe('archived');
+    expect(note.status).toBe('completed');
     expect(note.moveReason).toBeNull();
   });
 
@@ -960,14 +960,14 @@ describe('NoteRepository — setStatus + listByStatus', () => {
   it('listByStatus filters correctly', () => {
     const idA = repo.create({ rawText: 'a' }).id;
     const idB = repo.create({ rawText: 'b' }).id;
-    repo.setStatus(idB, 'archived', null, new Date('2026-05-10T00:00:00.000Z'));
+    repo.setStatus(idB, 'completed', null, new Date('2026-05-10T00:00:00.000Z'));
 
     const active = repo.listByStatus('active', { limit: 10 });
-    const archived = repo.listByStatus('archived', { limit: 10 });
+    const completed = repo.listByStatus('completed', { limit: 10 });
     expect(active.map((n) => n.id)).toContain(idA);
     expect(active.map((n) => n.id)).not.toContain(idB);
-    expect(archived.map((n) => n.id)).toContain(idB);
-    expect(archived.map((n) => n.id)).not.toContain(idA);
+    expect(completed.map((n) => n.id)).toContain(idB);
+    expect(completed.map((n) => n.id)).not.toContain(idA);
   });
 
   it('listByStatus orders by status_changed_at DESC (NULL falls back to created_at)', () => {
@@ -984,10 +984,10 @@ describe('NoteRepository — setStatus + listByStatus', () => {
   it('listByStatus respects limit (cap 200)', () => {
     for (let i = 0; i < 5; i++) {
       const id = repo.create({ rawText: `n${i}` }).id;
-      repo.setStatus(id, 'archived', null, new Date(`2026-05-${10 + i}T00:00:00.000Z`));
+      repo.setStatus(id, 'completed', null, new Date(`2026-05-${10 + i}T00:00:00.000Z`));
     }
-    expect(repo.listByStatus('archived', { limit: 3 })).toHaveLength(3);
-    expect(repo.listByStatus('archived', { limit: 100 })).toHaveLength(5);
+    expect(repo.listByStatus('completed', { limit: 3 })).toHaveLength(3);
+    expect(repo.listByStatus('completed', { limit: 100 })).toHaveLength(5);
   });
 
   it('listByStatus default limit 200', () => {
@@ -1016,7 +1016,7 @@ describe('NoteRepository — setStatus + listByStatus', () => {
     expect(repo.findById(id)!.deletedAt).toBeNull();
   });
 
-  it('setStatus("completed"/"archived") also clears deleted_at', () => {
+  it('setStatus("completed") also clears deleted_at', () => {
     const { id } = repo.create({ rawText: 'r' });
     repo.setStatus(id, 'trashed', null, new Date('2026-05-15T00:00:00.000Z'));
     repo.setStatus(id, 'completed', null, new Date('2026-05-16T00:00:00.000Z'));
@@ -1037,13 +1037,12 @@ describe('NoteRepository — setStatus + listByStatus', () => {
     const c = repo.create({ rawText: 'c' }).id;
     repo.setStatus(c, 'completed', null, new Date('2026-05-10T00:00:00.000Z'));
     const d = repo.create({ rawText: 'd' }).id;
-    repo.setStatus(d, 'archived', null, new Date('2026-05-10T00:00:00.000Z'));
+    repo.setStatus(d, 'completed', null, new Date('2026-05-10T00:00:00.000Z'));
     const e = repo.create({ rawText: 'e' }).id;
     repo.setStatus(e, 'trashed', null, new Date('2026-05-10T00:00:00.000Z'));
 
     expect(repo.countByStatus('active')).toBe(2);
-    expect(repo.countByStatus('completed')).toBe(1);
-    expect(repo.countByStatus('archived')).toBe(1);
+    expect(repo.countByStatus('completed')).toBe(2);
     expect(repo.countByStatus('trashed')).toBe(1);
     // sanity — a 가 여전히 active.
     expect(repo.findById(a)!.status).toBe('active');
@@ -1222,3 +1221,151 @@ describe('NoteRepository — notes_fts tags sync (v0.2.11 Cut D)', () => {
     expect(row.tags).toBe('결재');
   });
 });
+
+describe('NoteRepository.create with notebook', () => {
+  let db: Database.Database;
+  let repo: NoteRepository;
+  let defaultId: string;
+
+  beforeEach(() => {
+    db = new Database(':memory:');
+    db.pragma('foreign_keys = ON');
+    runMigrations(db);
+    repo = new NoteRepository(db);
+    defaultId = (db.prepare(`SELECT id FROM notebooks`).get() as { id: string }).id;
+  });
+
+  it('notebook_id 미지정 시 default notebook 으로 들어감', () => {
+    const { id } = repo.create({ rawText: 'hello' });
+    const r = repo.findById(id);
+    expect(r?.notebookId).toBe(defaultId);
+  });
+
+  it('notebook_id 지정 시 그 값 보존', () => {
+    db.prepare(`INSERT INTO notebooks(id,name,created_at,updated_at) VALUES('nb-other','회사','2026-05-14','2026-05-14')`).run();
+    const { id } = repo.create({ rawText: 'hi', notebookId: 'nb-other' });
+    expect(repo.findById(id)?.notebookId).toBe('nb-other');
+  });
+
+  it('hydrate 가 notebookId 필드 반환', () => {
+    const { id } = repo.create({ rawText: 'hi' });
+    const r = repo.findById(id);
+    expect(typeof r?.notebookId).toBe('string');
+    expect(r?.notebookId).toBe(defaultId);
+  });
+});
+
+describe('NoteRepository.findPromotionCandidates', () => {
+  let db: Database.Database;
+  let repo: NoteRepository;
+  let defaultId: string;
+  beforeEach(() => {
+    db = new Database(':memory:');
+    db.pragma('foreign_keys = ON');
+    runMigrations(db);
+    repo = new NoteRepository(db);
+    defaultId = (db.prepare(`SELECT id FROM notebooks`).get() as { id: string }).id;
+  });
+
+  function insertWithTag(rawText: string, tagName: string, notebookId?: string): string {
+    const { id } = repo.create({ rawText, notebookId });
+    repo.updateAiResult(id, { title: rawText, summary: 'a\nb\nc', tags: [tagName], provider: 'test', dueDate: null });
+    return id;
+  }
+
+  it('threshold 미만: 빈 결과', () => {
+    insertWithTag('n1', 'mlx-ops');
+    insertWithTag('n2', 'mlx-ops');
+    expect(repo.findPromotionCandidates(defaultId)).toEqual([]);
+  });
+
+  it('threshold 도달: tag 와 noteIds 반환', () => {
+    const a = insertWithTag('n1', 'mlx-ops');
+    const b = insertWithTag('n2', 'mlx-ops');
+    const c = insertWithTag('n3', 'mlx-ops');
+    const r = repo.findPromotionCandidates(defaultId);
+    expect(r).toHaveLength(1);
+    expect(r[0]!.tag).toBe('mlx-ops');
+    expect(r[0]!.noteIds.sort()).toEqual([a, b, c].sort());
+  });
+
+  it('default 가 아닌 notebook 의 노트는 제외', () => {
+    db.prepare(`INSERT INTO notebooks(id,name,created_at,updated_at) VALUES('nb-x','회사','2099-01-01','2099-01-01')`).run();
+    insertWithTag('n1', 'mlx-ops');
+    insertWithTag('n2', 'mlx-ops');
+    insertWithTag('n3', 'mlx-ops', 'nb-x');
+    expect(repo.findPromotionCandidates(defaultId)).toEqual([]);
+  });
+
+  it('completed 제외 — active 만', () => {
+    insertWithTag('n1', 'mlx-ops');
+    insertWithTag('n2', 'mlx-ops');
+    const c = insertWithTag('n3', 'mlx-ops');
+    repo.setStatus(c, 'completed', null);
+    expect(repo.findPromotionCandidates(defaultId)).toEqual([]);
+  });
+
+  it('threshold 인자로 cap 조절 가능', () => {
+    insertWithTag('n1', 'mlx-ops');
+    insertWithTag('n2', 'mlx-ops');
+    expect(repo.findPromotionCandidates(defaultId, 2)).toHaveLength(1);
+  });
+
+  it('여러 tag cluster 가 모두 반환', () => {
+    insertWithTag('a1', 'mlx-ops');
+    insertWithTag('a2', 'mlx-ops');
+    insertWithTag('a3', 'mlx-ops');
+    insertWithTag('b1', 'keycloak');
+    insertWithTag('b2', 'keycloak');
+    insertWithTag('b3', 'keycloak');
+    const r = repo.findPromotionCandidates(defaultId);
+    expect(r).toHaveLength(2);
+    expect(r.map((c) => c.tag).sort()).toEqual(['keycloak', 'mlx-ops']);
+  });
+});
+
+describe('NoteRepository.list / countByStatus with notebookId', () => {
+  let db: Database.Database;
+  let repo: NoteRepository;
+  let nbA: string, nbB: string;
+  beforeEach(() => {
+    db = new Database(':memory:');
+    db.pragma('foreign_keys = ON');
+    runMigrations(db);
+    repo = new NoteRepository(db);
+    nbA = (db.prepare(`SELECT id FROM notebooks`).get() as { id: string }).id;
+    nbB = 'nb-b';
+    db.prepare(`INSERT INTO notebooks(id,name,created_at,updated_at) VALUES(?,?,?,?)`).run(nbB,'회사','2099-01-01','2099-01-01');
+  });
+
+  it('list 가 notebookId 필터로 노트 분리', () => {
+    repo.create({ rawText: 'in-default' });
+    repo.create({ rawText: 'in-B', notebookId: nbB });
+    expect(repo.list({ limit: 10, notebookId: nbA }).map((n) => n.rawText)).toEqual(['in-default']);
+    expect(repo.list({ limit: 10, notebookId: nbB }).map((n) => n.rawText)).toEqual(['in-B']);
+  });
+
+  it('list 의 notebookId 미지정 시 모든 notebook 의 노트', () => {
+    repo.create({ rawText: 'in-default' });
+    repo.create({ rawText: 'in-B', notebookId: nbB });
+    expect(repo.list({ limit: 10 })).toHaveLength(2);
+  });
+
+  it('countByStatus(notebookId) — 각 notebook 의 active 갯수', () => {
+    repo.create({ rawText: 'a1' });
+    repo.create({ rawText: 'a2' });
+    repo.create({ rawText: 'b1', notebookId: nbB });
+    expect(repo.countByStatus('active', { notebookId: nbA })).toBe(2);
+    expect(repo.countByStatus('active', { notebookId: nbB })).toBe(1);
+    expect(repo.countByStatus('active')).toBe(3);  // 옵션 미지정 시 전체
+  });
+
+  it('listByStatus(notebookId) — 같은 status 라도 notebook 별 분리', () => {
+    const { id: a1 } = repo.create({ rawText: 'a1' });
+    const { id: b1 } = repo.create({ rawText: 'b1', notebookId: nbB });
+    repo.setStatus(a1, 'completed', null);
+    repo.setStatus(b1, 'completed', null);
+    expect(repo.listByStatus('completed', { notebookId: nbA }).map((n) => n.id)).toEqual([a1]);
+    expect(repo.listByStatus('completed', { notebookId: nbB }).map((n) => n.id)).toEqual([b1]);
+  });
+});

tests/unit/NotebookCreateModal.test.tsx

@@ -0,0 +1,64 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import '@testing-library/jest-dom/vitest';
+import { render, screen, fireEvent, cleanup, waitFor } from '@testing-library/react';
+
+const createNotebook = vi.fn(async (): Promise<{ ok: boolean; reason?: string }> => ({ ok: true }));
+
+vi.mock('../../src/renderer/inbox/store.js', () => ({
+  useInbox: (selector?: (s: { createNotebook: typeof createNotebook }) => unknown) => {
+    const state = { createNotebook };
+    return selector ? selector(state) : state;
+  }
+}));
+
+import { NotebookCreateModal } from '../../src/renderer/inbox/components/NotebookCreateModal';
+
+describe('NotebookCreateModal', () => {
+  beforeEach(() => {
+    cleanup();
+    createNotebook.mockClear();
+  });
+
+  it('이름 빈 상태에서 "만들기" disabled', () => {
+    render(<NotebookCreateModal onClose={() => {}} />);
+    const btn = screen.getByRole('button', { name: '만들기' });
+    expect(btn).toBeDisabled();
+  });
+
+  it('이름 입력 후 만들기 클릭 → createNotebook 호출 + onClose', async () => {
+    const onClose = vi.fn();
+    createNotebook.mockResolvedValueOnce({ ok: true });
+    render(<NotebookCreateModal onClose={onClose} />);
+    fireEvent.change(screen.getByLabelText('노트북 이름'), { target: { value: '회사' } });
+    fireEvent.click(screen.getByRole('button', { name: '만들기' }));
+    await waitFor(() => expect(createNotebook).toHaveBeenCalledWith('회사', expect.any(String)));
+    await waitFor(() => expect(onClose).toHaveBeenCalled());
+  });
+
+  it('duplicate_name reason 시 에러 표시 + onClose 안 됨', async () => {
+    const onClose = vi.fn();
+    createNotebook.mockResolvedValueOnce({ ok: false, reason: 'duplicate_name' });
+    render(<NotebookCreateModal onClose={onClose} />);
+    fireEvent.change(screen.getByLabelText('노트북 이름'), { target: { value: '기본' } });
+    fireEvent.click(screen.getByRole('button', { name: '만들기' }));
+    await waitFor(() => expect(screen.getByText(/이미 있어요/)).toBeInTheDocument());
+    expect(onClose).not.toHaveBeenCalled();
+  });
+
+  it('overlay 클릭 → onClose', () => {
+    const onClose = vi.fn();
+    const { container } = render(<NotebookCreateModal onClose={onClose} />);
+    fireEvent.click(container.firstChild as HTMLElement);
+    expect(onClose).toHaveBeenCalled();
+  });
+
+  it('color palette 클릭 시 선택 색 변경 (border 확인)', () => {
+    render(<NotebookCreateModal onClose={() => {}} />);
+    const colorBtns = screen.getAllByRole('button').filter((b) => b.getAttribute('aria-label')?.startsWith('색 '));
+    expect(colorBtns).toHaveLength(6);
+    fireEvent.click(colorBtns[2]!);
+    // 선택 색의 border 가 '2px solid #333' 인지 확인
+    expect(colorBtns[2]!.style.border).toContain('2px');
+  });
+});

tests/unit/NotebookList.test.tsx

@@ -0,0 +1,72 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import '@testing-library/jest-dom/vitest';
+import { render, screen, fireEvent, cleanup } from '@testing-library/react';
+import { NotebookList } from '../../src/renderer/inbox/components/NotebookList';
+
+const notebooks = [
+  { id: 'nb-1', name: '기본', color: null, createdAt: 't', updatedAt: 't', noteCount: 3 },
+  { id: 'nb-2', name: '회사', color: '#0a4b80', createdAt: 't', updatedAt: 't', noteCount: 7 }
+];
+
+describe('NotebookList', () => {
+  beforeEach(cleanup);
+
+  it('노트북 이름 + count 렌더링', () => {
+    render(<NotebookList notebooks={notebooks} selectedId="nb-1" onSelect={() => {}} onCreate={() => {}} />);
+    expect(screen.getByText('기본')).toBeInTheDocument();
+    expect(screen.getByText('3')).toBeInTheDocument();
+    expect(screen.getByText('회사')).toBeInTheDocument();
+    expect(screen.getByText('7')).toBeInTheDocument();
+  });
+
+  it('클릭 시 onSelect 호출', () => {
+    const onSelect = vi.fn();
+    render(<NotebookList notebooks={notebooks} selectedId="nb-1" onSelect={onSelect} onCreate={() => {}} />);
+    fireEvent.click(screen.getByText('회사'));
+    expect(onSelect).toHaveBeenCalledWith('nb-2');
+  });
+
+  it('+ 새 노트북 클릭 시 onCreate 호출', () => {
+    const onCreate = vi.fn();
+    render(<NotebookList notebooks={notebooks} selectedId="nb-1" onSelect={() => {}} onCreate={onCreate} />);
+    fireEvent.click(screen.getByRole('button', { name: /새 노트북/ }));
+    expect(onCreate).toHaveBeenCalled();
+  });
+
+  it('selected notebook 의 background 가 다름', () => {
+    render(<NotebookList notebooks={notebooks} selectedId="nb-1" onSelect={() => {}} onCreate={() => {}} />);
+    const btn1 = screen.getByText('기본').closest('button')!;
+    const btn2 = screen.getByText('회사').closest('button')!;
+    expect(btn1.style.background).not.toBe('transparent');
+    expect(btn2.style.background).toBe('transparent');
+  });
+
+  it('hover 시 ↑↓ 버튼 노출', () => {
+    const { container } = render(<NotebookList notebooks={notebooks} selectedId="nb-1" onSelect={() => {}} onCreate={() => {}} onReorder={async () => {}} />);
+    // 기본 상태: ↑↓ 미노출
+    expect(screen.queryByLabelText(/위로/)).not.toBeInTheDocument();
+    // hover 후 보임 — position:relative 인 row div 선택
+    const row = container.querySelector('div[style*="position: relative"]') as HTMLElement;
+    fireEvent.mouseEnter(row);
+    expect(screen.getAllByLabelText(/위로/).length).toBeGreaterThan(0);
+  });
+
+  it('↑ 클릭 시 onReorder up 호출', () => {
+    const onReorder = vi.fn();
+    const { container } = render(<NotebookList notebooks={notebooks} selectedId="nb-2" onSelect={() => {}} onCreate={() => {}} onReorder={onReorder} />);
+    const rows = container.querySelectorAll('div[style*="position: relative"]');
+    // 두번째 row (nb-2) hover → 위로 클릭
+    fireEvent.mouseEnter(rows[1] as Element);
+    fireEvent.click(screen.getByLabelText('회사 위로'));
+    expect(onReorder).toHaveBeenCalledWith('nb-2', 'up');
+  });
+
+  it('첫 row 의 ↑ 는 disabled', () => {
+    const { container } = render(<NotebookList notebooks={notebooks} selectedId="nb-1" onSelect={() => {}} onCreate={() => {}} onReorder={async () => {}} />);
+    const rows = container.querySelectorAll('div[style*="position: relative"]');
+    fireEvent.mouseEnter(rows[0] as Element);
+    const upBtn = screen.getByLabelText('기본 위로');
+    expect(upBtn).toBeDisabled();
+  });
+});

tests/unit/NotebookRepository.test.ts

@@ -0,0 +1,160 @@
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+import Database from 'better-sqlite3';
+import { runMigrations } from '../../src/main/db/migrations/index.js';
+import { NotebookRepository } from '../../src/main/repository/NotebookRepository.js';
+
+describe('NotebookRepository', () => {
+  let db: Database.Database;
+  let repo: NotebookRepository;
+  beforeEach(() => {
+    db = new Database(':memory:');
+    db.pragma('foreign_keys = ON');
+    runMigrations(db);
+    repo = new NotebookRepository(db);
+  });
+  afterEach(() => { db.close(); });
+
+  it('list: 기본 notebook 1개 + noteCount 0', () => {
+    const all = repo.list();
+    expect(all).toHaveLength(1);
+    expect(all[0]!.name).toBe('기본');
+    expect(all[0]!.noteCount).toBe(0);
+  });
+
+  it('create: 새 notebook 추가', () => {
+    const nb = repo.create({ name: '회사', color: '#0a4b80' });
+    expect(nb.name).toBe('회사');
+    expect(nb.color).toBe('#0a4b80');
+    expect(repo.list()).toHaveLength(2);
+  });
+
+  it('create: 같은 이름 두 번이면 throw', () => {
+    repo.create({ name: '회사' });
+    expect(() => repo.create({ name: '회사' })).toThrow();
+  });
+
+  it('rename: 이름 변경', () => {
+    const nb = repo.create({ name: '회사' });
+    repo.rename(nb.id, '워크');
+    const after = repo.findById(nb.id);
+    expect(after?.name).toBe('워크');
+  });
+
+  it('delete: 메모 없으면 OK', () => {
+    const nb = repo.create({ name: '회사' });
+    const r = repo.delete(nb.id);
+    expect(r.ok).toBe(true);
+    expect(repo.findById(nb.id)).toBeNull();
+  });
+
+  it('delete: 메모 있으면 RESTRICT — ok:false', () => {
+    const nb = repo.create({ name: '회사' });
+    const ts = '2026-05-14T00:00:00Z';
+    db.prepare(
+      `INSERT INTO notes(id, raw_text, ai_status, created_at, updated_at, status, notebook_id)
+       VALUES('n1','t','pending',?,?,'active',?)`
+    ).run(ts, ts, nb.id);
+    const r = repo.delete(nb.id);
+    expect(r.ok).toBe(false);
+    if (!r.ok) expect(r.reason).toBe('has_notes');
+  });
+
+  it('noteCount: status="active" 만 카운트 (completed/trashed 제외)', () => {
+    const nb = repo.create({ name: '회사' });
+    const ts = '2026-05-14T00:00:00Z';
+    const insert = db.prepare(
+      `INSERT INTO notes(id, raw_text, ai_status, created_at, updated_at, status, notebook_id)
+       VALUES(?,?,?,?,?,?,?)`
+    );
+    insert.run('n1','t','done',ts,ts,'active',nb.id);
+    insert.run('n2','t','done',ts,ts,'completed',nb.id);
+    insert.run('n3','t','done',ts,ts,'trashed',nb.id);
+    const found = repo.findById(nb.id);
+    expect(found?.noteCount).toBe(1);
+  });
+
+  it('moveNote: notebook_id 갱신', () => {
+    const nb = repo.create({ name: '회사' });
+    const ts = '2026-05-14T00:00:00Z';
+    const defaultId = repo.list().find((n) => n.name === '기본')!.id;
+    db.prepare(
+      `INSERT INTO notes(id, raw_text, ai_status, created_at, updated_at, status, notebook_id)
+       VALUES('n1','t','pending',?,?,'active',?)`
+    ).run(ts, ts, defaultId);
+    repo.moveNote('n1', nb.id);
+    const r = db.prepare(`SELECT notebook_id FROM notes WHERE id='n1'`).get() as { notebook_id: string };
+    expect(r.notebook_id).toBe(nb.id);
+  });
+
+  it('setColor: 색 변경', () => {
+    const nb = repo.create({ name: '회사', color: '#000' });
+    repo.setColor(nb.id, '#fff');
+    expect(repo.findById(nb.id)?.color).toBe('#fff');
+  });
+
+  it('delete: 존재하지 않는 id → ok:false reason="not_found"', () => {
+    const r = repo.delete('does-not-exist');
+    expect(r.ok).toBe(false);
+    if (!r.ok) expect(r.reason).toBe('not_found');
+  });
+
+  it('findByName: 이름으로 조회', () => {
+    const nb = repo.create({ name: '회사' });
+    const found = repo.findByName('회사');
+    expect(found?.id).toBe(nb.id);
+  });
+
+  it('findByName: case-insensitive', () => {
+    repo.create({ name: 'Work' });
+    expect(repo.findByName('work')?.name).toBe('Work');
+  });
+
+  it('findByName: 없으면 null', () => {
+    expect(repo.findByName('없음')).toBeNull();
+  });
+
+  it('list: sort_order ASC 순서로 반환', () => {
+    const a = repo.create({ name: 'A' }); // sort_order = 1 (기본=0)
+    const b = repo.create({ name: 'B' }); // sort_order = 2
+    const all = repo.list();
+    expect(all[0]!.name).toBe('기본');
+    expect(all[1]!.id).toBe(a.id);
+    expect(all[2]!.id).toBe(b.id);
+  });
+
+  it('reorder: B.up → B/기본/A 순서로 swap', () => {
+    const a = repo.create({ name: 'A' }); // sort_order=1
+    const b = repo.create({ name: 'B' }); // sort_order=2
+    // 초기: 기본(0), A(1), B(2)
+    const r = repo.reorder(b.id, 'up');
+    expect(r.ok).toBe(true);
+    const names = repo.list().map((n) => n.name);
+    expect(names).toEqual(['기본', 'B', 'A']);
+  });
+
+  it('reorder: 첫 번째 notebook up → ok:false', () => {
+    const defaultId = repo.list()[0]!.id;
+    const r = repo.reorder(defaultId, 'up');
+    expect(r.ok).toBe(false);
+  });
+
+  it('reorder: 마지막 notebook down → ok:false', () => {
+    const c = repo.create({ name: 'C' }); // sort_order=1
+    const r = repo.reorder(c.id, 'down');
+    expect(r.ok).toBe(false);
+  });
+
+  it('reorder: B.down → 기본/A/C/B 순서', () => {
+    const a = repo.create({ name: 'A' }); // sort_order=1
+    const b = repo.create({ name: 'B' }); // sort_order=2
+    const c = repo.create({ name: 'C' }); // sort_order=3
+    // 초기: 기본(0), A(1), B(2), C(3)
+    const r = repo.reorder(b.id, 'down');
+    expect(r.ok).toBe(true);
+    const names = repo.list().map((n) => n.name);
+    expect(names).toEqual(['기본', 'A', 'C', 'B']);
+    // a, c 순서 안 변함 확인
+    expect(names.indexOf('A')).toBeLessThan(names.indexOf('C'));
+    void a; void c;
+  });
+});

tests/unit/PromotionBanner.test.tsx

@@ -0,0 +1,81 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import '@testing-library/jest-dom/vitest';
+import { render, screen, fireEvent, cleanup } from '@testing-library/react';
+
+const accept = vi.fn(async () => {});
+const snooze = vi.fn(async () => {});
+const dismiss = vi.fn(async () => {});
+
+let mockState: {
+  promotionCandidates: Array<{ tag: string; noteIds: string[]; suggestedName: string }>;
+  acceptPromotion: typeof accept;
+  snoozePromotion: typeof snooze;
+  dismissPromotion: typeof dismiss;
+} = {
+  promotionCandidates: [],
+  acceptPromotion: accept,
+  snoozePromotion: snooze,
+  dismissPromotion: dismiss
+};
+
+vi.mock('../../src/renderer/inbox/store.js', () => ({
+  useInbox: (selector?: (s: typeof mockState) => unknown) => selector ? selector(mockState) : mockState
+}));
+
+import { PromotionBanner } from '../../src/renderer/inbox/components/PromotionBanner';
+
+describe('PromotionBanner', () => {
+  beforeEach(() => {
+    cleanup();
+    accept.mockClear(); snooze.mockClear(); dismiss.mockClear();
+    mockState = {
+      promotionCandidates: [],
+      acceptPromotion: accept,
+      snoozePromotion: snooze,
+      dismissPromotion: dismiss
+    };
+  });
+
+  it('candidates 비어있으면 null', () => {
+    const { container } = render(<PromotionBanner />);
+    expect(container.firstChild).toBeNull();
+  });
+
+  it('첫 candidate 의 tag/suggestedName 표시', () => {
+    mockState.promotionCandidates = [{ tag: 'mlx-ops', noteIds: ['n1', 'n2', 'n3'], suggestedName: 'Mlx Ops' }];
+    render(<PromotionBanner />);
+    expect(screen.getByText('mlx-ops')).toBeInTheDocument();
+    expect(screen.getByText('Mlx Ops')).toBeInTheDocument();
+  });
+
+  it('수락 클릭 → 편집 모드 → 만들기 → acceptPromotion 호출', () => {
+    mockState.promotionCandidates = [{ tag: 'mlx-ops', noteIds: ['n1', 'n2', 'n3'], suggestedName: 'Mlx Ops' }];
+    render(<PromotionBanner />);
+    fireEvent.click(screen.getByRole('button', { name: '수락' }));
+    fireEvent.click(screen.getByRole('button', { name: '만들기' }));
+    expect(accept).toHaveBeenCalledWith('mlx-ops', 'Mlx Ops', expect.any(String));
+  });
+
+  it('나중에 클릭 → snoozePromotion 호출', () => {
+    mockState.promotionCandidates = [{ tag: 'mlx-ops', noteIds: ['n1', 'n2', 'n3'], suggestedName: 'Mlx Ops' }];
+    render(<PromotionBanner />);
+    fireEvent.click(screen.getByRole('button', { name: '나중에' }));
+    expect(snooze).toHaveBeenCalled();
+  });
+
+  it('숨기기 클릭 → dismissPromotion(tag) 호출', () => {
+    mockState.promotionCandidates = [{ tag: 'mlx-ops', noteIds: ['n1', 'n2', 'n3'], suggestedName: 'Mlx Ops' }];
+    render(<PromotionBanner />);
+    fireEvent.click(screen.getByRole('button', { name: '숨기기' }));
+    expect(dismiss).toHaveBeenCalledWith('mlx-ops');
+  });
+
+  it('편집 모드: 이름 빈 시 만들기 disabled', () => {
+    mockState.promotionCandidates = [{ tag: 'mlx-ops', noteIds: ['n1', 'n2', 'n3'], suggestedName: 'Mlx Ops' }];
+    render(<PromotionBanner />);
+    fireEvent.click(screen.getByRole('button', { name: '수락' }));
+    fireEvent.change(screen.getByLabelText('노트북 이름'), { target: { value: '' } });
+    expect(screen.getByRole('button', { name: '만들기' })).toBeDisabled();
+  });
+});

tests/unit/SearchBox.test.tsx

@@ -9,10 +9,13 @@ const { mockSearchNotes, mockClearSearch } = vi.hoisted(() => ({
   mockClearSearch: vi.fn()
 }));
 
+// selectedNotebookId 를 테스트 간 변경할 수 있도록 ref 로 관리.
+let mockSelectedNotebookId: string | null = 'nb-1';
+
 vi.mock('../../src/renderer/inbox/store.js', () => ({
   useInbox: Object.assign(
-    (selector?: (s: { searchQuery: string }) => unknown) => {
-      const state = { searchQuery: '' };
+    (selector?: (s: { searchQuery: string; selectedNotebookId: string | null }) => unknown) => {
+      const state = { searchQuery: '', selectedNotebookId: mockSelectedNotebookId };
       return selector ? selector(state) : state;
     },
     { getState: () => ({ searchNotes: mockSearchNotes, clearSearch: mockClearSearch }) }
@@ -26,6 +29,7 @@ describe('SearchBox', () => {
     vi.clearAllMocks();
     cleanup();
     vi.useFakeTimers();
+    mockSelectedNotebookId = 'nb-1';
   });
 
   it('타이핑 → 200ms debounce 후 searchNotes 호출', () => {
@@ -34,7 +38,7 @@ describe('SearchBox', () => {
     fireEvent.change(input, { target: { value: '회의' } });
     expect(mockSearchNotes).not.toHaveBeenCalled();
     vi.advanceTimersByTime(200);
-    expect(mockSearchNotes).toHaveBeenCalledWith('회의');
+    expect(mockSearchNotes).toHaveBeenCalledWith('회의', { notebookId: 'nb-1' });
   });
 
   it('빈 값 → clearSearch 호출', () => {
@@ -44,4 +48,32 @@ describe('SearchBox', () => {
     vi.advanceTimersByTime(200);
     expect(mockClearSearch).toHaveBeenCalled();
   });
+
+  it('기본 scope=current — searchNotes 에 selectedNotebookId 전달', () => {
+    render(<SearchBox />);
+    const input = screen.getByRole('searchbox');
+    fireEvent.change(input, { target: { value: '노트' } });
+    vi.advanceTimersByTime(200);
+    expect(mockSearchNotes).toHaveBeenCalledWith('노트', { notebookId: 'nb-1' });
+  });
+
+  it('scope=all 변경 시 다음 검색에서 notebookId 미전달 (undefined)', () => {
+    render(<SearchBox />);
+    const input = screen.getByRole('searchbox');
+    const scopeSelect = screen.getByRole('combobox', { name: '검색 범위' });
+
+    fireEvent.change(scopeSelect, { target: { value: 'all' } });
+    fireEvent.change(input, { target: { value: '리뷰' } });
+    vi.advanceTimersByTime(200);
+    expect(mockSearchNotes).toHaveBeenCalledWith('리뷰', { notebookId: undefined });
+  });
+
+  it('selectedNotebookId=null 이면 scope=current 에서 notebookId=undefined 전달', () => {
+    mockSelectedNotebookId = null;
+    render(<SearchBox />);
+    const input = screen.getByRole('searchbox');
+    fireEvent.change(input, { target: { value: '테스트' } });
+    vi.advanceTimersByTime(200);
+    expect(mockSearchNotes).toHaveBeenCalledWith('테스트', { notebookId: undefined });
+  });
 });

tests/unit/Sidebar.test.tsx

@@ -0,0 +1,35 @@
+// @vitest-environment jsdom
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import '@testing-library/jest-dom/vitest';
+import { render, screen, cleanup } from '@testing-library/react';
+
+vi.mock('../../src/renderer/inbox/api.js', () => ({
+  inboxApi: {} as never,
+  notebookApi: {} as never
+}));
+
+import { Sidebar } from '../../src/renderer/inbox/components/Sidebar';
+import { useInbox } from '../../src/renderer/inbox/store';
+
+describe('Sidebar', () => {
+  beforeEach(() => {
+    cleanup();
+    useInbox.setState({ sidebarVisible: false, sidebarWidth: 240, notebooks: [], selectedNotebookId: null } as never);
+  });
+
+  it('sidebarVisible=false 면 렌더링 안 함', () => {
+    const { container } = render(<Sidebar />);
+    expect(container.firstChild).toBeNull();
+  });
+
+  it('sidebarVisible=true 면 NotebookList 렌더링', () => {
+    useInbox.setState({
+      sidebarVisible: true,
+      sidebarWidth: 240,
+      notebooks: [{ id: 'nb-1', name: '기본', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 }],
+      selectedNotebookId: 'nb-1'
+    } as never);
+    render(<Sidebar />);
+    expect(screen.getByText('기본')).toBeInTheDocument();
+  });
+});

tests/unit/ai-schema.test.ts

@@ -112,4 +112,19 @@ describe('parseAiResponse', () => {
     });
     expect(r.dueDate).toBeNull();
   });
+
+  it('parseAiResponse — notebook_match valid string', () => {
+    const r = parseAiResponse({ title: '제목입니다', summary: '한\n두\n셋', tags: [], due_date: null, notebook_match: '회사' });
+    expect(r.notebookMatch).toBe('회사');
+  });
+
+  it('parseAiResponse — notebook_match null', () => {
+    const r = parseAiResponse({ title: '제목입니다', summary: '한\n두\n셋', tags: [], due_date: null, notebook_match: null });
+    expect(r.notebookMatch).toBeNull();
+  });
+
+  it('parseAiResponse — notebook_match 누락 시 null', () => {
+    const r = parseAiResponse({ title: '제목입니다', summary: '한\n두\n셋', tags: [], due_date: null });
+    expect(r.notebookMatch).toBeNull();
+  });
 });

tests/unit/batchClassify.test.ts

@@ -0,0 +1,212 @@
+import { describe, it, expect, vi } from 'vitest';
+import { batchClassifyDefault } from '../../src/main/ai/batchClassify';
+
+// ---------------------------------------------------------------------------
+// Minimal fakes
+// ---------------------------------------------------------------------------
+
+interface FakeNote { id: string; rawText: string; aiTitle: string | null; notebookId: string; status: string }
+interface FakeNotebook { id: string; name: string }
+
+function makeNoteRepo(notes: FakeNote[], defaultNotebookId: string) {
+  return {
+    listByStatus: vi.fn((_status: string, opts: { notebookId?: string; limit?: number } = {}) => {
+      if (opts.notebookId !== defaultNotebookId) return [];
+      const limit = opts.limit ?? notes.length;
+      return notes.slice(0, limit);
+    }),
+    getDefaultNotebookId: vi.fn(() => defaultNotebookId)
+  };
+}
+
+function makeNotebookRepo(notebooks: FakeNotebook[]) {
+  return {
+    getDefault: vi.fn(() => notebooks[0] ?? null),
+    list: vi.fn(() => notebooks),
+    findByName: vi.fn((name: string) => notebooks.find((n) => n.name.toLowerCase() === name.toLowerCase()) ?? null)
+  };
+}
+
+function makeProvider(json: string) {
+  return {
+    generateRaw: vi.fn(async (_p: string) => json)
+  };
+}
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+describe('batchClassifyDefault', () => {
+  it('default notebook 의 노트들 + 다른 notebook 들 prompt 구성 및 결과 매핑', async () => {
+    const defaultNb: FakeNotebook = { id: 'nb-default', name: '기본' };
+    const otherNb: FakeNotebook = { id: 'nb-work', name: '회사' };
+    const notes: FakeNote[] = [
+      { id: 'n1', rawText: 'MLX 계정 생성 가이드', aiTitle: 'MLX 가이드', notebookId: 'nb-default', status: 'active' },
+      { id: 'n2', rawText: '미용실 예약', aiTitle: null, notebookId: 'nb-default', status: 'active' }
+    ];
+
+    const aiJson = JSON.stringify({
+      assignments: [
+        { id: 'n1', notebook: '회사' },
+        { id: 'n2', notebook: null }
+      ]
+    });
+
+    const result = await batchClassifyDefault({
+      noteRepo: makeNoteRepo(notes, 'nb-default') as never,
+      notebookRepo: makeNotebookRepo([defaultNb, otherNb]) as never,
+      provider: makeProvider(aiJson)
+    });
+
+    expect(result.assignments).toHaveLength(2);
+
+    const n1 = result.assignments.find((a) => a.noteId === 'n1');
+    expect(n1?.notebookId).toBe('nb-work');
+    expect(n1?.notebookName).toBe('회사');
+
+    const n2 = result.assignments.find((a) => a.noteId === 'n2');
+    expect(n2?.notebookId).toBeNull();
+    expect(n2?.notebookName).toBeNull();
+  });
+
+  it('다른 notebook 0개면 빈 결과', async () => {
+    const defaultNb: FakeNotebook = { id: 'nb-default', name: '기본' };
+    const notes: FakeNote[] = [
+      { id: 'n1', rawText: '노트', aiTitle: null, notebookId: 'nb-default', status: 'active' }
+    ];
+
+    const provider = makeProvider('{}');
+    const result = await batchClassifyDefault({
+      noteRepo: makeNoteRepo(notes, 'nb-default') as never,
+      notebookRepo: makeNotebookRepo([defaultNb]) as never,
+      provider
+    });
+
+    expect(result.assignments).toHaveLength(0);
+    expect(result.skippedReason).toBe('no_other_notebooks');
+    // provider 가 호출되면 안 됨
+    expect(provider.generateRaw).not.toHaveBeenCalled();
+  });
+
+  it('default 의 노트 0건이면 빈 결과', async () => {
+    const defaultNb: FakeNotebook = { id: 'nb-default', name: '기본' };
+    const otherNb: FakeNotebook = { id: 'nb-work', name: '회사' };
+
+    const provider = makeProvider('{}');
+    const result = await batchClassifyDefault({
+      noteRepo: makeNoteRepo([], 'nb-default') as never,
+      notebookRepo: makeNotebookRepo([defaultNb, otherNb]) as never,
+      provider
+    });
+
+    expect(result.assignments).toHaveLength(0);
+    expect(result.skippedReason).toBe('no_notes');
+    expect(provider.generateRaw).not.toHaveBeenCalled();
+  });
+
+  it('AI 가 hallucinate 한 새 notebook 이름은 skip (notebookId=null 매핑)', async () => {
+    const defaultNb: FakeNotebook = { id: 'nb-default', name: '기본' };
+    const otherNb: FakeNotebook = { id: 'nb-work', name: '회사' };
+    const notes: FakeNote[] = [
+      { id: 'n1', rawText: '테스트 메모', aiTitle: null, notebookId: 'nb-default', status: 'active' }
+    ];
+
+    // AI 가 존재하지 않는 notebook 이름 반환
+    const aiJson = JSON.stringify({
+      assignments: [{ id: 'n1', notebook: '없는노트북이름XYZ' }]
+    });
+
+    const result = await batchClassifyDefault({
+      noteRepo: makeNoteRepo(notes, 'nb-default') as never,
+      notebookRepo: makeNotebookRepo([defaultNb, otherNb]) as never,
+      provider: makeProvider(aiJson)
+    });
+
+    expect(result.assignments).toHaveLength(1);
+    const a = result.assignments[0];
+    expect(a?.noteId).toBe('n1');
+    // 매칭 실패 → null
+    expect(a?.notebookId).toBeNull();
+    expect(a?.notebookName).toBeNull();
+  });
+
+  it('AI 응답의 id 가 입력 list 에 없으면 skip', async () => {
+    const defaultNb: FakeNotebook = { id: 'nb-default', name: '기본' };
+    const otherNb: FakeNotebook = { id: 'nb-work', name: '회사' };
+    const notes: FakeNote[] = [
+      { id: 'n1', rawText: '메모', aiTitle: null, notebookId: 'nb-default', status: 'active' }
+    ];
+
+    // AI 가 unknown-id 반환
+    const aiJson = JSON.stringify({
+      assignments: [
+        { id: 'unknown-id', notebook: '회사' },
+        { id: 'n1', notebook: '회사' }
+      ]
+    });
+
+    const result = await batchClassifyDefault({
+      noteRepo: makeNoteRepo(notes, 'nb-default') as never,
+      notebookRepo: makeNotebookRepo([defaultNb, otherNb]) as never,
+      provider: makeProvider(aiJson)
+    });
+
+    const ids = result.assignments.map((a) => a.noteId);
+    expect(ids).not.toContain('unknown-id');
+    expect(ids).toContain('n1');
+  });
+
+  it('provider 가 invalid JSON 반환 시 빈 결과 + skippedReason', async () => {
+    const defaultNb: FakeNotebook = { id: 'nb-default', name: '기본' };
+    const otherNb: FakeNotebook = { id: 'nb-work', name: '회사' };
+    const notes: FakeNote[] = [
+      { id: 'n1', rawText: '메모', aiTitle: null, notebookId: 'nb-default', status: 'active' }
+    ];
+
+    const result = await batchClassifyDefault({
+      noteRepo: makeNoteRepo(notes, 'nb-default') as never,
+      notebookRepo: makeNotebookRepo([defaultNb, otherNb]) as never,
+      provider: makeProvider('not valid json at all!!!')
+    });
+
+    expect(result.assignments).toHaveLength(0);
+    expect(result.skippedReason).toMatch(/parse_error|ai_error/);
+  });
+
+  it('top N cap (50) 이 적용되어 prompt 에 최대 50개 노트만 포함', async () => {
+    const defaultNb: FakeNotebook = { id: 'nb-default', name: '기본' };
+    const otherNb: FakeNotebook = { id: 'nb-work', name: '회사' };
+
+    // 60개 노트 생성
+    const notes: FakeNote[] = Array.from({ length: 60 }, (_, i) => ({
+      id: `n${i}`,
+      rawText: `메모 ${i}`,
+      aiTitle: null,
+      notebookId: 'nb-default',
+      status: 'active'
+    }));
+
+    // 50개만 assignments 반환
+    const assignments = notes.slice(0, 50).map((n) => ({ id: n.id, notebook: '회사' }));
+    const aiJson = JSON.stringify({ assignments });
+
+    const capturedPrompts: string[] = [];
+    const provider = {
+      generateRaw: vi.fn(async (p: string) => { capturedPrompts.push(p); return aiJson; })
+    };
+
+    await batchClassifyDefault({
+      noteRepo: makeNoteRepo(notes, 'nb-default') as never,
+      notebookRepo: makeNotebookRepo([defaultNb, otherNb]) as never,
+      provider
+    });
+
+    // prompt 에 n50~n59 (cap 이후) 는 포함 안 됨
+    const prompt = capturedPrompts[0] ?? '';
+    // 처음 50개 (n0~n49) 중 일부는 있어야 함
+    expect(prompt).toContain('n0');
+    // n50 이후는 없어야 함
+    expect(prompt).not.toContain('- n50:');
+  });
+});

tests/unit/classifyStatus.test.ts

@@ -28,7 +28,7 @@ describe('classifyStatus', () => {
     expect(r.rationale).toBe('처리됨');
   });
 
-  it('falls back to archived on parse failure (invalid JSON)', async () => {
+  it('falls back to completed on parse failure (invalid JSON)', async () => {
     const provider = makeProvider(vi.fn(async () => 'not json'));
     const r = await classifyStatus({
       provider,
@@ -36,11 +36,11 @@ describe('classifyStatus', () => {
       summary: '',
       reason: 'r'
     });
-    expect(r.recommended).toBe('archived');
+    expect(r.recommended).toBe('completed');
     expect(r.rationale).toMatch(/판단 실패|보관/);
   });
 
-  it('falls back to archived on invalid status value', async () => {
+  it('falls back to completed on invalid status value', async () => {
     const provider = makeProvider(
       vi.fn(async () => '{"recommended":"unknown","rationale":"x"}')
     );
@@ -50,7 +50,7 @@ describe('classifyStatus', () => {
       summary: '',
       reason: 'r'
     });
-    expect(r.recommended).toBe('archived');
+    expect(r.recommended).toBe('completed');
   });
 
   it('handles provider throw', async () => {
@@ -65,7 +65,7 @@ describe('classifyStatus', () => {
       summary: '',
       reason: 'r'
     });
-    expect(r.recommended).toBe('archived');
+    expect(r.recommended).toBe('completed');
     expect(r.rationale).toMatch(/판단 실패|보관/);
   });
 
@@ -77,13 +77,13 @@ describe('classifyStatus', () => {
       summary: '',
       reason: 'r'
     });
-    expect(r.recommended).toBe('archived');
+    expect(r.recommended).toBe('completed');
     expect(r.rationale).toMatch(/판단 실패|보관/);
   });
 
   it('substitutes empty inputs with placeholder text in prompt', async () => {
     const generateRaw = vi.fn(
-      async (_p: string) => '{"recommended":"archived","rationale":"ok"}'
+      async (_p: string) => '{"recommended":"completed","rationale":"ok"}'
     );
     const provider = makeProvider(generateRaw);
     await classifyStatus({ provider, rawText: '', summary: '', reason: '' });

tests/unit/inboxApi-setStatus.test.ts

@@ -69,9 +69,9 @@ describe('inbox:set-status IPC', () => {
     registerInboxApi(makeDeps());
     const handler = handlers['inbox:set-status'];
     if (handler === undefined) throw new Error('handler not registered');
-    const r = await handler(null, 'n1', 'archived', null);
+    const r = await handler(null, 'n1', 'trashed', null);
     expect(r).toEqual({ ok: true });
-    expect(mockSetStatus).toHaveBeenCalledWith('n1', 'archived', null);
+    expect(mockSetStatus).toHaveBeenCalledWith('n1', 'trashed', null);
   });
 
   it('rejects invalid status without calling repo', async () => {
@@ -130,7 +130,7 @@ describe('ai:classify-status IPC', () => {
     expect(prompt).toContain('결재');
   });
 
-  it('returns archived fallback when note not found', async () => {
+  it('returns completed fallback when note not found (v0.4 — archived 제거)', async () => {
     mockFindById.mockReturnValue(null);
     registerInboxApi(makeDeps());
     const handler = handlers['ai:classify-status'];
@@ -139,12 +139,12 @@ describe('ai:classify-status IPC', () => {
       recommended: string;
       rationale: string;
     };
-    expect(r.recommended).toBe('archived');
+    expect(r.recommended).toBe('completed');
     expect(r.rationale.length).toBeGreaterThan(0);
     expect(mockGenerateRaw).not.toHaveBeenCalled();
   });
 
-  it('returns archived fallback when AI throws', async () => {
+  it('returns completed fallback when AI throws (v0.4 — archived 제거)', async () => {
     mockFindById.mockReturnValue({
       id: 'n1',
       rawText: 't',
@@ -158,6 +158,6 @@ describe('ai:classify-status IPC', () => {
       recommended: string;
       rationale: string;
     };
-    expect(r.recommended).toBe('archived');
+    expect(r.recommended).toBe('completed');
   });
 });

tests/unit/m008.test.ts

@@ -0,0 +1,78 @@
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+import Database from 'better-sqlite3';
+import { runMigrations } from '../../src/main/db/migrations/index.js';
+import * as m001 from '../../src/main/db/migrations/m001_initial.js';
+import * as m002 from '../../src/main/db/migrations/m002_due_date.js';
+import * as m003 from '../../src/main/db/migrations/m003_soft_delete.js';
+import * as m004 from '../../src/main/db/migrations/m004_status.js';
+import * as m005 from '../../src/main/db/migrations/m005_ai_disabled.js';
+import * as m006 from '../../src/main/db/migrations/m006_revisions.js';
+import * as m007 from '../../src/main/db/migrations/m007_fts.js';
+
+/** m001~m007 을 수동 적용하고 user_version=7 로 설정 (m008 만 미적용 상태) */
+function applyUpTo7(db: Database.Database): void {
+  m001.up(db);
+  m002.up(db);
+  m003.up(db);
+  m004.up(db);
+  m005.up(db);
+  m006.up(db);
+  m007.up(db);
+  db.pragma('user_version = 7');
+}
+
+describe('m008 notebooks migration', () => {
+  let db: Database.Database;
+  beforeEach(() => { db = new Database(':memory:'); db.pragma('foreign_keys = ON'); });
+  afterEach(() => { db.close(); });
+
+  it('fresh DB: notebooks 테이블 + default "기본" notebook 생성', () => {
+    runMigrations(db);
+    const row = db.prepare(`SELECT name FROM notebooks`).get() as { name: string };
+    expect(row.name).toBe('기본');
+  });
+
+  it('fresh insert 는 notebook_id NULL 유지 (migration UPDATE 는 migration 시점 행만 채움)', () => {
+    runMigrations(db);
+    db.prepare(`INSERT INTO notes(id,raw_text,ai_status,created_at,updated_at,status) VALUES('n1','t','pending','2026-05-14','2026-05-14','active')`).run();
+    const r = db.prepare(`SELECT notebook_id FROM notes WHERE id='n1'`).get() as { notebook_id: string | null };
+    expect(r.notebook_id).toBeNull();  // m008 의 UPDATE 는 migration 시점의 NULL 만 채움
+  });
+
+  it('pre-migration 노트가 runMigrations 후 default notebook 으로 backfill 됨', () => {
+    applyUpTo7(db);
+    // m008 적용 전 상태에서 노트 삽입 (notebook_id 컬럼 없음)
+    db.prepare(`INSERT INTO notes(id,raw_text,ai_status,created_at,updated_at,status) VALUES('pre1','hello','pending','2026-05-14','2026-05-14','active')`).run();
+    // m008 만 적용
+    runMigrations(db);
+    const defaultId = (db.prepare(`SELECT id FROM notebooks`).get() as { id: string }).id;
+    const r = db.prepare(`SELECT notebook_id FROM notes WHERE id='pre1'`).get() as { notebook_id: string | null };
+    expect(r.notebook_id).toBe(defaultId);
+  });
+
+  it('pre-migration archived 노트가 runMigrations 후 completed 로 변환됨', () => {
+    applyUpTo7(db);
+    // m008 적용 전 상태에서 archived 노트 삽입
+    db.prepare(`INSERT INTO notes(id,raw_text,ai_status,created_at,updated_at,status) VALUES('arc1','bye','pending','2026-05-14','2026-05-14','archived')`).run();
+    // m008 만 적용
+    runMigrations(db);
+    const r = db.prepare(`SELECT status FROM notes WHERE id='arc1'`).get() as { status: string };
+    expect(r.status).toBe('completed');
+  });
+
+  it('UNIQUE index 가 같은 이름 중복 INSERT 거부', () => {
+    runMigrations(db);
+    expect(() =>
+      db.prepare(`INSERT INTO notebooks(id,name,created_at,updated_at) VALUES('x','기본','t','t')`).run()
+    ).toThrow();
+  });
+
+  it('UNIQUE index 가 대소문자 다른 이름도 중복으로 거부 (COLLATE NOCASE)', () => {
+    runMigrations(db);
+    // 영문 notebook 추가 후 대소문자 변형 삽입 시도
+    db.prepare(`INSERT INTO notebooks(id,name,created_at,updated_at) VALUES('nb1','Default','t','t')`).run();
+    expect(() =>
+      db.prepare(`INSERT INTO notebooks(id,name,created_at,updated_at) VALUES('nb2','default','t','t')`).run()
+    ).toThrow();
+  });
+});

tests/unit/m009.test.ts

@@ -0,0 +1,28 @@
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+import Database from 'better-sqlite3';
+import { runMigrations } from '../../src/main/db/migrations/index.js';
+
+describe('m009 notebook sort_order migration', () => {
+  let db: Database.Database;
+  beforeEach(() => { db = new Database(':memory:'); db.pragma('foreign_keys = ON'); });
+  afterEach(() => { db.close(); });
+
+  it('fresh DB: default notebook 의 sort_order = 0', () => {
+    runMigrations(db);
+    const r = db.prepare(`SELECT sort_order FROM notebooks`).get() as { sort_order: number };
+    expect(r.sort_order).toBe(0);
+  });
+
+  it('새 notebook insert 시 DEFAULT 0 (caller 가 max+1 책임)', () => {
+    runMigrations(db);
+    db.prepare(`INSERT INTO notebooks(id,name,created_at,updated_at) VALUES('nb-x','회사','t','t')`).run();
+    const r = db.prepare(`SELECT sort_order FROM notebooks WHERE id='nb-x'`).get() as { sort_order: number };
+    expect(r.sort_order).toBe(0);
+  });
+
+  it('user_version reaches 9 after all migrations', () => {
+    runMigrations(db);
+    const r = db.prepare('PRAGMA user_version').get() as { user_version: number };
+    expect(r.user_version).toBe(9);
+  });
+});

tests/unit/migrations.test.ts

@@ -51,11 +51,11 @@ describe('migration v3 — soft delete columns', () => {
     db.close();
   });
 
-  it('user_version reaches latest (7)', () => {
+  it('user_version reaches latest (9)', () => {
     const db = new Database(':memory:');
     runMigrations(db);
     const row = db.prepare('PRAGMA user_version').get() as { user_version: number };
-    expect(row.user_version).toBe(7);
+    expect(row.user_version).toBe(9);
     db.close();
   });
 

tests/unit/notebookApi.test.ts

@@ -0,0 +1,119 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+
+vi.mock('electron', () => ({
+  default: { ipcMain: { handle: vi.fn(), on: vi.fn() } }
+}));
+
+import electron from 'electron';
+import { registerNotebookApi } from '../../src/main/ipc/notebookApi.js';
+
+function getHandler(channel: string): (...args: unknown[]) => unknown {
+  const handle = (electron.ipcMain as unknown as { handle: ReturnType<typeof vi.fn> }).handle;
+  const call = handle.mock.calls.find((c) => c[0] === channel);
+  if (!call) throw new Error(`channel ${channel} not registered`);
+  return call[1] as (...args: unknown[]) => unknown;
+}
+
+function makeRepo() {
+  return {
+    list: vi.fn(() => [] as never[]),
+    create: vi.fn(),
+    rename: vi.fn(),
+    setColor: vi.fn(),
+    delete: vi.fn(() => ({ ok: true })),
+    moveNote: vi.fn(),
+    findById: vi.fn(() => null),
+    reorder: vi.fn(() => ({ ok: true }))
+  };
+}
+
+describe('notebookApi IPC', () => {
+  beforeEach(() => {
+    (electron.ipcMain as unknown as { handle: ReturnType<typeof vi.fn> }).handle.mockClear();
+  });
+
+  it('notebook:list — repo.list 결과 반환', async () => {
+    const repo = makeRepo();
+    repo.list.mockReturnValue([{ id: '1', name: '기본', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 }] as never);
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:list');
+    const r = await h({}) as unknown[];
+    expect(r).toHaveLength(1);
+  });
+
+  it('notebook:create — UNIQUE 위반 시 ok:false reason="duplicate_name"', async () => {
+    const repo = makeRepo();
+    repo.create.mockImplementation(() => { throw new Error('UNIQUE constraint failed: notebooks.name'); });
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:create');
+    const r = await h({}, { name: '회사' }) as { ok: boolean; reason?: string };
+    expect(r.ok).toBe(false);
+    expect(r.reason).toBe('duplicate_name');
+  });
+
+  it('notebook:create — 빈 이름 시 ok:false reason="empty_name"', async () => {
+    const repo = makeRepo();
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:create');
+    const r = await h({}, { name: '   ' }) as { ok: boolean; reason?: string };
+    expect(r.ok).toBe(false);
+    expect(r.reason).toBe('empty_name');
+    expect(repo.create).not.toHaveBeenCalled();
+  });
+
+  it('notebook:rename — UNIQUE 위반 ok:false reason="duplicate_name"', async () => {
+    const repo = makeRepo();
+    repo.rename.mockImplementation(() => { throw new Error('UNIQUE constraint failed: notebooks.name'); });
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:rename');
+    const r = await h({}, 'id1', '회사') as { ok: boolean; reason?: string };
+    expect(r.ok).toBe(false);
+    expect(r.reason).toBe('duplicate_name');
+  });
+
+  it('notebook:delete — has_notes 시 ok:false reason 전달', async () => {
+    const repo = makeRepo();
+    repo.delete.mockReturnValue({ ok: false, reason: 'has_notes' } as never);
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:delete');
+    const r = await h({}, 'id1');
+    expect(r).toEqual({ ok: false, reason: 'has_notes' });
+  });
+
+  it('notebook:move-note — repo.moveNote 호출 + ok:true', async () => {
+    const repo = makeRepo();
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:move-note');
+    const r = await h({}, 'n1', 'nb-2');
+    expect(repo.moveNote).toHaveBeenCalledWith('n1', 'nb-2');
+    expect(r).toEqual({ ok: true });
+  });
+
+  it('notebook:set-color — repo.setColor 호출 + ok:true', async () => {
+    const repo = makeRepo();
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:set-color');
+    const r = await h({}, 'id1', '#fff');
+    expect(repo.setColor).toHaveBeenCalledWith('id1', '#fff');
+    expect(r).toEqual({ ok: true });
+  });
+
+  it('notebook:reorder — repo.reorder 호출 + ok:true 전달', async () => {
+    const repo = makeRepo();
+    repo.reorder.mockReturnValue({ ok: true } as never);
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:reorder');
+    const r = await h({}, 'nb-1', 'up');
+    expect(repo.reorder).toHaveBeenCalledWith('nb-1', 'up');
+    expect(r).toEqual({ ok: true });
+  });
+
+  it('notebook:reorder — 첫 번째 항목 up 시 ok:false 전달', async () => {
+    const repo = makeRepo();
+    repo.reorder.mockReturnValue({ ok: false } as never);
+    registerNotebookApi({ repo: repo as never });
+    const h = getHandler('notebook:reorder');
+    const r = await h({}, 'nb-first', 'up');
+    expect(r).toEqual({ ok: false });
+  });
+});

tests/unit/prompt.test.ts

@@ -29,3 +29,18 @@ describe('prompt', () => {
     expect(jsonRulesIdx).toBeGreaterThan(vocabIdx);
   });
 });
+
+describe('buildPrompt with notebooks', () => {
+  it('notebooks 목록이 prompt 에 포함됨', () => {
+    const p = buildPrompt('hi', '2026-05-14', [], [], ['기본', '회사']);
+    expect(p).toContain('기본');
+    expect(p).toContain('회사');
+    expect(p).toContain('notebook_match');
+  });
+
+  it('notebooks 빈 배열 시 notebook 섹션 생략', () => {
+    const p = buildPrompt('hi', '2026-05-14', [], [], []);
+    expect(p).not.toContain('notebook_match');
+    expect(p).not.toContain('사용 가능한 노트북');
+  });
+});

tests/unit/store.expired.test.ts

@@ -34,7 +34,7 @@ const noteStub = (id: string): Note => ({
   deletedAt: null, lastRecalledAt: null, recallDismissedAt: null,
   status: 'active', statusChangedAt: null, moveReason: null,
   createdAt: '2026-05-01T00:00:00Z', updatedAt: '2026-05-01T00:00:00Z',
-  tags: [], media: []
+  tags: [], media: [], notebookId: 'nb-default'
 });
 
 describe('useInbox — expired state (v0.2.3 #5)', () => {

tests/unit/store.notebook.test.ts

@@ -0,0 +1,129 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+
+const { mockListByStatus, mockCountsByStatus, mockReorder } = vi.hoisted(() => ({
+  mockListByStatus: vi.fn(async () => []),
+  mockCountsByStatus: vi.fn(async () => ({ active: 0, completed: 0, archived: 0, trashed: 0 })),
+  mockReorder: vi.fn(async () => ({ ok: true as const }))
+}));
+
+vi.mock('../../src/renderer/inbox/api.js', () => ({
+  inboxApi: {
+    listNotes: vi.fn(async () => []),
+    listTrash: vi.fn(async () => []),
+    getTrashCount: vi.fn(async () => 0),
+    getContinuity: vi.fn(async () => ({ weekStart: '', weekCount: 0, weekTarget: 7, consecutiveCompleteWeeks: 0, showRecoveryToast: false, lastNoteAt: null })),
+    getPendingCount: vi.fn(async () => 0),
+    getOllamaStatus: vi.fn(async () => ({ ok: true })),
+    getTodayCount: vi.fn(async () => 0),
+    listExpired: vi.fn(async () => []),
+    getFailedCount: vi.fn(async () => 0),
+    listRecallCandidate: vi.fn(async () => null),
+    countsByStatus: mockCountsByStatus,
+    getSettings: vi.fn(async () => ({ ai_enabled: true })),
+    listByStatus: mockListByStatus,
+    setSidebarVisible: vi.fn(async () => ({ ok: true as const })),
+    setSidebarWidth: vi.fn(async () => ({ ok: true as const }))
+  },
+  notebookApi: {
+    list: vi.fn(async () => [
+      { id: 'nb-1', name: '기본', color: null, createdAt: 't', updatedAt: 't', noteCount: 3 },
+      { id: 'nb-2', name: '회사', color: '#0a4b80', createdAt: 't', updatedAt: 't', noteCount: 1 }
+    ]),
+    create: vi.fn(async (i: { name: string; color?: string }) => ({ ok: true as const, notebook: { id: 'nb-new', name: i.name, color: i.color ?? null, createdAt: 't', updatedAt: 't', noteCount: 0 } })),
+    delete: vi.fn(async () => ({ ok: true as const })),
+    rename: vi.fn(async () => ({ ok: true as const })),
+    setColor: vi.fn(async () => ({ ok: true as const })),
+    moveNote: vi.fn(async () => ({ ok: true as const })),
+    reorder: mockReorder
+  }
+}));
+
+import { useInbox } from '../../src/renderer/inbox/store.js';
+
+describe('store notebooks', () => {
+  beforeEach(() => {
+    mockListByStatus.mockClear();
+    mockCountsByStatus.mockClear();
+    mockReorder.mockClear();
+    useInbox.setState({ notebooks: [], selectedNotebookId: null, sidebarVisible: false, sidebarWidth: 240, view: 'inbox' } as never);
+  });
+
+  it('loadNotebooks 가 notebookApi.list 결과 반영', async () => {
+    await useInbox.getState().loadNotebooks();
+    expect(useInbox.getState().notebooks).toHaveLength(2);
+  });
+
+  it('loadNotebooks: selectedNotebookId null 이면 첫 notebook 으로 자동 설정', async () => {
+    await useInbox.getState().loadNotebooks();
+    expect(useInbox.getState().selectedNotebookId).toBe('nb-1');
+  });
+
+  it('selectNotebook 가 selectedNotebookId 설정', () => {
+    useInbox.getState().selectNotebook('nb-X');
+    expect(useInbox.getState().selectedNotebookId).toBe('nb-X');
+  });
+
+  it('createNotebook 성공 시 notebooks 에 추가', async () => {
+    await useInbox.getState().createNotebook('학습', '#ccc');
+    expect(useInbox.getState().notebooks.some((n) => n.name === '학습')).toBe(true);
+  });
+
+  it('toggleSidebar 가 sidebarVisible 반전', () => {
+    expect(useInbox.getState().sidebarVisible).toBe(false);
+    useInbox.getState().toggleSidebar();
+    expect(useInbox.getState().sidebarVisible).toBe(true);
+  });
+
+  it('deleteNotebook 성공 시 notebooks 에서 제거 + selected 였으면 첫 notebook 으로', async () => {
+    useInbox.setState({
+      notebooks: [
+        { id: 'nb-1', name: '기본', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 },
+        { id: 'nb-2', name: '회사', color: null, createdAt: 't', updatedAt: 't', noteCount: 0 }
+      ],
+      selectedNotebookId: 'nb-2'
+    } as never);
+    await useInbox.getState().deleteNotebook('nb-2');
+    expect(useInbox.getState().notebooks.map((n) => n.id)).toEqual(['nb-1']);
+    expect(useInbox.getState().selectedNotebookId).toBe('nb-1');
+  });
+
+  it('selectNotebook 가 loadByView + refreshMeta 호출', async () => {
+    // inbox view 에서 notebook 전환 → listByStatus + countsByStatus 호출됨.
+    useInbox.setState({ view: 'inbox', selectedNotebookId: null } as never);
+    useInbox.getState().selectNotebook('nb-X');
+    expect(useInbox.getState().selectedNotebookId).toBe('nb-X');
+    // 비동기 완료 대기
+    await new Promise((r) => setTimeout(r, 0));
+    expect(mockListByStatus).toHaveBeenCalled();
+    expect(mockCountsByStatus).toHaveBeenCalled();
+  });
+
+  it('loadByView 가 selectedNotebookId 를 inboxApi.listByStatus 에 전달', async () => {
+    useInbox.setState({ selectedNotebookId: 'nb-X', view: 'inbox' } as never);
+    await useInbox.getState().loadByView('inbox');
+    expect(mockListByStatus).toHaveBeenCalledWith('active', expect.objectContaining({ notebookId: 'nb-X' }));
+  });
+
+  it('refreshMeta 가 selectedNotebookId 를 inboxApi.countsByStatus 에 전달', async () => {
+    useInbox.setState({ selectedNotebookId: 'nb-X' } as never);
+    await useInbox.getState().refreshMeta();
+    expect(mockCountsByStatus).toHaveBeenCalledWith(expect.objectContaining({ notebookId: 'nb-X' }));
+  });
+
+  it('selectNotebook: review view 에선 loadByView 를 호출하지 않음', async () => {
+    useInbox.setState({ view: 'review-weekly', selectedNotebookId: null } as never);
+    useInbox.getState().selectNotebook('nb-X');
+    await new Promise((r) => setTimeout(r, 0));
+    // listByStatus 는 호출되지 않아야 함 (review view 는 list 대상 아님)
+    expect(mockListByStatus).not.toHaveBeenCalled();
+    // countsByStatus 는 refreshMeta 경로로 호출됨
+    expect(mockCountsByStatus).toHaveBeenCalled();
+  });
+
+  it('reorderNotebook 성공 시 notebookApi.reorder 호출 + loadNotebooks 재로드', async () => {
+    await useInbox.getState().reorderNotebook('nb-1', 'down');
+    expect(mockReorder).toHaveBeenCalledWith('nb-1', 'down');
+    // loadNotebooks 가 호출되어 notebooks 가 갱신됨
+    expect(useInbox.getState().notebooks).toHaveLength(2);
+  });
+});

tests/unit/store.promotion.test.ts

@@ -0,0 +1,144 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+
+vi.mock('../../src/renderer/inbox/api.js', () => ({
+  inboxApi: {
+    // promotion IPC
+    listPromotionCandidates: vi.fn(async () => []),
+    getPromotionDismissedTags: vi.fn(async () => []),
+    addPromotionDismissedTag: vi.fn(async () => undefined),
+    getPromotionSnoozeUntil: vi.fn(async () => 0),
+    setPromotionSnoozeUntil: vi.fn(async () => undefined),
+    // refreshMeta deps
+    getContinuity: vi.fn(async () => ({ weekStart: '', weekCount: 0, weekTarget: 7, consecutiveCompleteWeeks: 0, showRecoveryToast: false, lastNoteAt: null })),
+    getPendingCount: vi.fn(async () => 0),
+    getOllamaStatus: vi.fn(async () => ({ ok: true })),
+    getTodayCount: vi.fn(async () => 0),
+    getTrashCount: vi.fn(async () => 0),
+    listExpired: vi.fn(async () => []),
+    getFailedCount: vi.fn(async () => 0),
+    listRecallCandidate: vi.fn(async () => null),
+    countsByStatus: vi.fn(async () => ({ active: 0, completed: 0, archived: 0, trashed: 0 })),
+    getSettings: vi.fn(async () => ({ ai_enabled: true }))
+  },
+  notebookApi: {
+    list: vi.fn(async () => []),
+    create: vi.fn(async (i: { name: string; color?: string }) => ({
+      ok: true as const,
+      notebook: { id: 'nb-promo', name: i.name, color: i.color ?? null, createdAt: 't', updatedAt: 't', noteCount: 0 }
+    })),
+    moveNote: vi.fn(async () => ({ ok: true as const })),
+    rename: vi.fn(async () => ({ ok: true as const })),
+    setColor: vi.fn(async () => ({ ok: true as const })),
+    delete: vi.fn(async () => ({ ok: true as const }))
+  }
+}));
+
+import { useInbox } from '../../src/renderer/inbox/store.js';
+import { inboxApi } from '../../src/renderer/inbox/api.js';
+import { notebookApi } from '../../src/renderer/inbox/api.js';
+
+type MockInboxApi = {
+  listPromotionCandidates: ReturnType<typeof vi.fn>;
+  getPromotionDismissedTags: ReturnType<typeof vi.fn>;
+  addPromotionDismissedTag: ReturnType<typeof vi.fn>;
+  getPromotionSnoozeUntil: ReturnType<typeof vi.fn>;
+  setPromotionSnoozeUntil: ReturnType<typeof vi.fn>;
+};
+type MockNotebookApi = {
+  create: ReturnType<typeof vi.fn>;
+  moveNote: ReturnType<typeof vi.fn>;
+};
+
+const mockInbox = inboxApi as unknown as MockInboxApi;
+const mockNotebook = notebookApi as unknown as MockNotebookApi;
+
+describe('store promotion actions', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    useInbox.setState({ promotionCandidates: [], notebooks: [], sidebarVisible: false, selectedNotebookId: null } as never);
+  });
+
+  it('loadPromotionCandidates: 후보 목록 반환 + suggestedName toTitleCase 변환', async () => {
+    mockInbox.getPromotionDismissedTags.mockResolvedValueOnce([]);
+    mockInbox.getPromotionSnoozeUntil.mockResolvedValueOnce(0);
+    mockInbox.listPromotionCandidates.mockResolvedValueOnce([
+      { tag: 'machine-learning', noteIds: ['n1', 'n2', 'n3'], suggestedName: '' }
+    ]);
+    await useInbox.getState().loadPromotionCandidates();
+    const candidates = useInbox.getState().promotionCandidates;
+    expect(candidates).toHaveLength(1);
+    expect(candidates[0]!.suggestedName).toBe('Machine Learning');
+    expect(candidates[0]!.noteIds).toEqual(['n1', 'n2', 'n3']);
+  });
+
+  it('loadPromotionCandidates: snooze 유효 시 빈 배열', async () => {
+    mockInbox.getPromotionDismissedTags.mockResolvedValueOnce([]);
+    // 24h 후 만료되는 snooze
+    mockInbox.getPromotionSnoozeUntil.mockResolvedValueOnce(Date.now() + 24 * 60 * 60 * 1000);
+    mockInbox.listPromotionCandidates.mockResolvedValueOnce([
+      { tag: 'work', noteIds: ['n1', 'n2', 'n3'], suggestedName: '' }
+    ]);
+    await useInbox.getState().loadPromotionCandidates();
+    expect(useInbox.getState().promotionCandidates).toHaveLength(0);
+  });
+
+  it('loadPromotionCandidates: dismissed tag 는 제외', async () => {
+    mockInbox.getPromotionDismissedTags.mockResolvedValueOnce(['work']);
+    mockInbox.getPromotionSnoozeUntil.mockResolvedValueOnce(0);
+    mockInbox.listPromotionCandidates.mockResolvedValueOnce([
+      { tag: 'work', noteIds: ['n1', 'n2', 'n3'], suggestedName: '' },
+      { tag: 'study', noteIds: ['n4', 'n5', 'n6'], suggestedName: '' }
+    ]);
+    await useInbox.getState().loadPromotionCandidates();
+    const candidates = useInbox.getState().promotionCandidates;
+    expect(candidates).toHaveLength(1);
+    expect(candidates[0]!.tag).toBe('study');
+  });
+
+  it('dismissPromotion: addPromotionDismissedTag 호출 + state 에서 그 tag 제거', async () => {
+    useInbox.setState({
+      promotionCandidates: [
+        { tag: 'work', noteIds: ['n1', 'n2', 'n3'], suggestedName: 'Work' },
+        { tag: 'study', noteIds: ['n4', 'n5'], suggestedName: 'Study' }
+      ]
+    } as never);
+    await useInbox.getState().dismissPromotion('work');
+    expect(mockInbox.addPromotionDismissedTag).toHaveBeenCalledWith('work');
+    const candidates = useInbox.getState().promotionCandidates;
+    expect(candidates).toHaveLength(1);
+    expect(candidates[0]!.tag).toBe('study');
+  });
+
+  it('snoozePromotion: setPromotionSnoozeUntil 24h 후로 호출 + state 비우기', async () => {
+    useInbox.setState({
+      promotionCandidates: [
+        { tag: 'work', noteIds: ['n1', 'n2', 'n3'], suggestedName: 'Work' }
+      ]
+    } as never);
+    const before = Date.now();
+    await useInbox.getState().snoozePromotion();
+    const [[ms]] = mockInbox.setPromotionSnoozeUntil.mock.calls as [[number]];
+    expect(ms).toBeGreaterThan(before + 23 * 60 * 60 * 1000);
+    expect(ms).toBeLessThan(before + 25 * 60 * 60 * 1000);
+    expect(useInbox.getState().promotionCandidates).toHaveLength(0);
+  });
+
+  it('acceptPromotion: notebook 생성 + moveNote 호출 + sidebar 열림 + selectedNotebookId 설정', async () => {
+    useInbox.setState({
+      promotionCandidates: [
+        { tag: 'work', noteIds: ['n1', 'n2'], suggestedName: 'Work' }
+      ],
+      notebooks: []
+    } as never);
+    await useInbox.getState().acceptPromotion('work', 'Work', '#0a4b80');
+    expect(mockNotebook.create).toHaveBeenCalledWith({ name: 'Work', color: '#0a4b80' });
+    expect(mockNotebook.moveNote).toHaveBeenCalledTimes(2);
+    expect(mockNotebook.moveNote).toHaveBeenCalledWith('n1', 'nb-promo');
+    expect(mockNotebook.moveNote).toHaveBeenCalledWith('n2', 'nb-promo');
+    const state = useInbox.getState();
+    expect(state.sidebarVisible).toBe(true);
+    expect(state.selectedNotebookId).toBe('nb-promo');
+    expect(state.promotionCandidates.find((c) => c.tag === 'work')).toBeUndefined();
+    expect(state.notebooks.some((n) => n.id === 'nb-promo')).toBe(true);
+  });
+});

tests/unit/store.recall.test.ts

@@ -38,7 +38,8 @@ const note = (id: string): Note => ({
   userIntent: null, intentPromptedAt: null,
   createdAt: new Date().toISOString(), updatedAt: new Date().toISOString(),
   deletedAt: null, lastRecalledAt: null, recallDismissedAt: null,
-  status: 'active', statusChangedAt: null, moveReason: null
+  status: 'active', statusChangedAt: null, moveReason: null,
+  notebookId: 'nb-default'
 });
 
 describe('store recall actions', () => {

tests/unit/store.tagFilter.test.ts

@@ -27,7 +27,8 @@ function sample(id: string, tags: string[]): Note {
     createdAt: '2026-04-26T00:00:00Z',
     updatedAt: '2026-04-26T00:00:00Z',
     tags: tags.map((name) => ({ name, source: 'ai' as const })),
-    media: []
+    media: [],
+    notebookId: 'nb-default'
   };
 }
 

tests/unit/store.trash.test.ts

@@ -32,7 +32,7 @@ const noteStub = (id: string, deletedAt: string | null = null): Note => ({
   deletedAt, lastRecalledAt: null, recallDismissedAt: null,
   status: deletedAt ? 'trashed' : 'active', statusChangedAt: deletedAt, moveReason: null,
   createdAt: '2026-05-01T00:00:00Z', updatedAt: '2026-05-01T00:00:00Z',
-  tags: [], media: []
+  tags: [], media: [], notebookId: 'nb-default'
 });
 
 describe('useInbox — trash state (v0.2.3 #4)', () => {

tests/unit/store.view.test.ts

@@ -5,7 +5,7 @@ const mockApi = {
   listNotes: vi.fn(async () => [] as Note[]),
   listTrash: vi.fn(async () => [] as Note[]),
   listByStatus: vi.fn(async () => [] as Note[]),
-  countsByStatus: vi.fn(async () => ({ active: 0, completed: 0, archived: 0, trashed: 0 })),
+  countsByStatus: vi.fn(async () => ({ active: 0, completed: 0, trashed: 0 })),
   getTrashCount: vi.fn(async () => 0),
   getContinuity: vi.fn(async () => ({
     weekStart: '', weekCount: 0, weekTarget: 7,
@@ -40,7 +40,7 @@ describe('inbox store — view enum', () => {
     const { useInbox } = await import('../../src/renderer/inbox/store.js');
     useInbox.setState({
       view: 'inbox',
-      counts: { active: 0, completed: 0, archived: 0, trashed: 0 },
+      counts: { active: 0, completed: 0, trashed: 0 },
       notes: [], trashNotes: [], trashCount: 0,
       showTrash: false, showSettings: false,
       loading: false, tagFilter: null, pendingCount: 0, todayCount: 0,
@@ -65,7 +65,7 @@ describe('inbox store — view enum', () => {
 
   it('counts initialized to zero per status', async () => {
     const { useInbox } = await import('../../src/renderer/inbox/store.js');
-    expect(useInbox.getState().counts).toEqual({ active: 0, completed: 0, archived: 0, trashed: 0 });
+    expect(useInbox.getState().counts).toEqual({ active: 0, completed: 0, trashed: 0 });
   });
 
   it('backward-compat: showTrash mirrors view==="trash"', async () => {