feat(schema): 001 — spaces, projects, tasks with check constraints

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/db/migration_001.test.js

@@ -0,0 +1,36 @@
+import { describe, it, expect, beforeAll } from 'vitest';
+import { resetDb, withClient } from '../helpers/db.js';
+import { migrateUp } from '../../lib/db/migrate.js';
+
+describe('migration 001 — core', () => {
+  beforeAll(async () => { await resetDb(); await migrateUp(); });
+
+  it('creates spaces, projects, tasks tables', async () => {
+    await withClient(async (c) => {
+      for (const t of ['spaces', 'projects', 'tasks']) {
+        const { rows } = await c.query(
+          `SELECT to_regclass('public.' || $1) AS t;`, [t]
+        );
+        expect(rows[0].t).toBe(t);
+      }
+    });
+  });
+
+  it('enforces UNIQUE(space_id, slug) on projects', async () => {
+    await withClient(async (c) => {
+      const { rows: [s] } = await c.query(
+        `INSERT INTO spaces(slug, name) VALUES('test', 'Test') RETURNING id;`
+      );
+      await c.query(
+        `INSERT INTO projects(space_id, slug, name) VALUES($1, 'a', 'A');`,
+        [s.id]
+      );
+      await expect(
+        c.query(
+          `INSERT INTO projects(space_id, slug, name) VALUES($1, 'a', 'B');`,
+          [s.id]
+        )
+      ).rejects.toThrow(/duplicate key/i);
+    });
+  });
+});