diff --git a/src/main/db/migrations/index.ts b/src/main/db/migrations/index.ts
index 8b09003..bfa01e2 100644
--- a/src/main/db/migrations/index.ts
+++ b/src/main/db/migrations/index.ts
@@ -6,8 +6,9 @@ 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';
 
-const migrations = [m001, m002, m003, m004, m005, m006, m007];
+const migrations = [m001, m002, m003, m004, m005, m006, m007, m008];
 
 export function latestVersion(): number {
   return migrations[migrations.length - 1]!.version;
diff --git a/src/main/db/migrations/m008_notebooks.ts b/src/main/db/migrations/m008_notebooks.ts
new file mode 100644
index 0000000..dcc982f
--- /dev/null
+++ b/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);
+
+    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();
+}
diff --git a/tests/unit/m008.test.ts b/tests/unit/m008.test.ts
new file mode 100644
index 0000000..588b595
--- /dev/null
+++ b/tests/unit/m008.test.ts
@@ -0,0 +1,35 @@
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+import Database from 'better-sqlite3';
+import { runMigrations } from '../../src/main/db/migrations/index.js';
+
+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('기존 notes 가 default notebook 으로 마이그레이션 — fresh insert 는 NULL 유지', () => {
+    runMigrations(db);
+    const defaultId = (db.prepare(`SELECT id FROM notebooks`).get() as { id: string }).id;
+    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('archived 잔류 노트가 있다면 completed 로 통합', () => {
+    runMigrations(db);
+    expect(() => db.prepare(`SELECT COUNT(*) FROM notes WHERE status='archived'`).get()).not.toThrow();
+  });
+
+  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();
+  });
+});