feat(migrate): BookStack importer

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/migrate/bookstack.test.js

@@ -0,0 +1,27 @@
+import { describe, it, expect, beforeAll, vi } from 'vitest';
+import { pool } from '../../lib/db/pool.js';
+import { resetDb } from '../helpers/db.js';
+import { migrateUp } from '../../lib/db/migrate.js';
+import { ensureSpace } from '../../migrate/spaces.js';
+import { importBookstack } from '../../migrate/sources/bookstack.js';
+
+let spaceId;
+beforeAll(async () => { await resetDb(); await migrateUp(); spaceId = await ensureSpace('wiki', 'Wiki'); });
+
+describe('bookstack importer', () => {
+  it('imports pages with markdown body, idempotently', async () => {
+    const list = { data: [{ id: 1, name: 'Page One' }, { id: 2, name: 'Page Two' }] };
+    const detail = (id) => ({ id, name: id === 1 ? 'Page One' : 'Page Two', markdown: `# P${id}\nbody`, html: `<p>body</p>` });
+    const fetchImpl = vi.fn(async (u) => {
+      if (u.endsWith('/api/pages')) return { ok: true, json: async () => list };
+      const id = Number(u.split('/').pop());
+      return { ok: true, json: async () => detail(id) };
+    });
+    const r1 = await importBookstack({ apiUrl: 'http://bs', tokenId: 'i', tokenSecret: 's', spaceId, fetchImpl });
+    expect(r1.created).toBe(2);
+    const { rows } = await pool.query(`SELECT title FROM pages WHERE space_id=$1 ORDER BY title`, [spaceId]);
+    expect(rows.map(r => r.title)).toEqual(['Page One', 'Page Two']);
+    const r2 = await importBookstack({ apiUrl: 'http://bs', tokenId: 'i', tokenSecret: 's', spaceId, fetchImpl });
+    expect(r2.created).toBe(0);
+  });
+});