chore: configure angular and postgres foundation

apps/api/src/config/database.config.spec.ts

@@ -0,0 +1,18 @@
+import { createDatabaseConfig } from './database.config';
+
+describe('createDatabaseConfig', () => {
+  it('uses postgres and permanently disables synchronization', () => {
+    expect(
+      createDatabaseConfig('postgresql://test:test@localhost/test'),
+    ).toMatchObject({
+      type: 'postgres',
+      url: 'postgresql://test:test@localhost/test',
+      synchronize: false,
+      autoLoadEntities: true,
+    });
+  });
+
+  it('rejects an empty database URL', () => {
+    expect(() => createDatabaseConfig('')).toThrow('DATABASE_URL is required');
+  });
+});