feat(repos): tags, polymorphic entity_links, attachments

tests/repos/attachments.test.js

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+import { describe, it, expect, beforeEach } from 'vitest';
+import { resetDb } from '../helpers/db.js';
+import { migrateUp } from '../../lib/db/migrate.js';
+import * as attachments from '../../lib/db/repos/attachments.js';
+
+beforeEach(async () => { await resetDb(); await migrateUp(); });
+
+describe('attachments repo', () => {
+  it('records an attachment', async () => {
+    const a = await attachments.create({
+      entity_type: 'page',
+      entity_id: '11111111-1111-1111-1111-111111111111',
+      filename: 'spec.pdf', mime_type: 'application/pdf',
+      size_bytes: 1024, blob_path: 'aa/abc', checksum: 'abc'
+    });
+    expect(a.filename).toBe('spec.pdf');
+  });
+
+  it('listForEntity returns descending by uploaded_at', async () => {
+    const eid = '11111111-1111-1111-1111-111111111111';
+    await attachments.create({ entity_type: 'page', entity_id: eid, filename: 'a', blob_path: 'a' });
+    await attachments.create({ entity_type: 'page', entity_id: eid, filename: 'b', blob_path: 'b' });
+    const list = await attachments.listForEntity('page', eid);
+    expect(list).toHaveLength(2);
+  });
+});

tests/repos/links.test.js

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+import { describe, it, expect, beforeEach } from 'vitest';
+import { resetDb } from '../helpers/db.js';
+import { migrateUp } from '../../lib/db/migrate.js';
+import * as links from '../../lib/db/repos/links.js';
+
+beforeEach(async () => { await resetDb(); await migrateUp(); });
+
+describe('links repo', () => {
+  it('create + listFrom + listTo + remove', async () => {
+    const a = '11111111-1111-1111-1111-111111111111';
+    const b = '22222222-2222-2222-2222-222222222222';
+    const link = await links.create('project', a, 'page', b, 'mentions');
+    expect(link.relation).toBe('mentions');
+    expect(await links.listFrom('project', a)).toHaveLength(1);
+    expect(await links.listTo('page', b)).toHaveLength(1);
+    await links.remove(link.id);
+    expect(await links.listFrom('project', a)).toHaveLength(0);
+  });
+
+  it('idempotent on the unique tuple', async () => {
+    const a = '11111111-1111-1111-1111-111111111111';
+    const b = '22222222-2222-2222-2222-222222222222';
+    const l1 = await links.create('project', a, 'page', b, 'mentions');
+    const l2 = await links.create('project', a, 'page', b, 'mentions');
+    expect(l2.id).toBe(l1.id);
+  });
+});

tests/repos/tags.test.js

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+import { describe, it, expect, beforeEach } from 'vitest';
+import { resetDb } from '../helpers/db.js';
+import { migrateUp } from '../../lib/db/migrate.js';
+import * as spaces from '../../lib/db/repos/spaces.js';
+import * as tags from '../../lib/db/repos/tags.js';
+
+const owner = { kind: 'user', id: null };
+beforeEach(async () => { await resetDb(); await migrateUp(); });
+
+describe('tags repo', () => {
+  it('upserts a tag by name', async () => {
+    const t1 = await tags.upsert('homelab');
+    const t2 = await tags.upsert('homelab');
+    expect(t2.id).toBe(t1.id);
+  });
+
+  it('attach + detach + listForEntity', async () => {
+    const s = await spaces.create({ slug: 'h', name: 'H' }, owner);
+    const t = await tags.upsert('urgent');
+    await tags.attach('space', s.id, t.id);
+    const list = await tags.listForEntity('space', s.id);
+    expect(list).toHaveLength(1);
+    await tags.detach('space', s.id, t.id);
+    expect(await tags.listForEntity('space', s.id)).toHaveLength(0);
+  });
+
+  it('attach is idempotent', async () => {
+    const s = await spaces.create({ slug: 'h', name: 'H' }, owner);
+    const t = await tags.upsert('urgent');
+    await tags.attach('space', s.id, t.id);
+    await tags.attach('space', s.id, t.id);
+    expect(await tags.listForEntity('space', s.id)).toHaveLength(1);
+  });
+});