feat(migrate): Karakeep bookmarks importer

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

tests/migrate/karakeep.test.js

@@ -0,0 +1,26 @@
+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 { importKarakeep } from '../../migrate/sources/karakeep.js';
+
+let spaceId;
+beforeAll(async () => { await resetDb(); await migrateUp(); spaceId = await ensureSpace('bookmarks', 'Bookmarks'); });
+
+describe('karakeep importer', () => {
+  it('imports bookmarks as url refs, idempotently', async () => {
+    const page = { bookmarks: [
+      { id: 'b1', content: { type: 'link', url: 'https://a.test', title: 'A' } },
+      { id: 'b2', content: { type: 'link', url: 'https://b.test', title: 'B' } }
+    ], nextCursor: null };
+    const fetchImpl = vi.fn(async () => ({ ok: true, json: async () => page }));
+    const r1 = await importKarakeep({ apiUrl: 'http://k', token: 't', spaceId, fetchImpl });
+    expect(r1.created).toBe(2);
+    const { rows } = await pool.query(`SELECT source_url FROM refs WHERE space_id=$1 ORDER BY source_url`, [spaceId]);
+    expect(rows.map(r => r.source_url)).toEqual(['https://a.test', 'https://b.test']);
+    await importKarakeep({ apiUrl: 'http://k', token: 't', spaceId, fetchImpl }); // upsert, no dupes
+    const { rows: again } = await pool.query(`SELECT count(*)::int n FROM refs WHERE space_id=$1`, [spaceId]);
+    expect(again[0].n).toBe(2);
+  });
+});