upload file size limit increased in server.ts

vitest.config.integration.ts

@@ -15,6 +15,10 @@ export default mergeConfig(viteConfig, defineConfig({
     // The path must be specific. By default, Vitest doesn't look in `src`
     // unless the pattern explicitly includes it.
     include: ['src/**/*.integration.test.ts'],
+    // CRITICAL: We must override the `exclude` property from the base vite.config.ts.
+    // Otherwise, the inherited `exclude` rule will prevent any integration tests from running.
+    // Setting it to an empty array removes all exclusion rules for this project.
+    exclude: [],
     // This setup script starts the backend server before tests run.
     globalSetup: './src/tests/setup/integration-global-setup.ts',
     testTimeout: 15000, // Increased timeout for server startup and API calls.