fix CI e2e tests: prevent .env.test from overriding DATABASE_URL

dotenv config() overrides env vars by default, which replaces the
CI DATABASE_URL with the local one. Added override: false so CI
environment variables take precedence over .env.test values.

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

Author: CumuloCumulo

server/test/setup.ts

@@ -2,4 +2,4 @@ import 'reflect-metadata';
 import { config } from 'dotenv';
 import { resolve } from 'path';
 
-config({ path: resolve(__dirname, '../.env.test') });
+config({ path: resolve(__dirname, '../.env.test'), override: false });