Define API base in config

Add src/config.ts with API baseUrl defaulting to environment var VITE_API_BASE_URL or '/api/v1'. Wire api.ts to use config.api.baseUrl instead of hardcoded base.

X-Lovable-Edit-ID: edt-474d2059-e9f4-4467-8d13-d089d07abac8

src/config.ts

@@ -0,0 +1,20 @@
+// Gatehouse Configuration
+// Environment-specific settings for the application
+
+export const config = {
+  // API Configuration
+  api: {
+    baseUrl: import.meta.env.VITE_API_BASE_URL || '/api/v1',
+  },
+
+  // App metadata
+  app: {
+    name: 'Gatehouse',
+    description: 'Identity & Access Platform',
+  },
+
+  // Feature flags
+  features: {
+    devTools: import.meta.env.DEV,
+  },
+} as const;

src/lib/api.ts

@@ -1,7 +1,7 @@
 // API Client for Gatehouse Backend
 // Uses session-based authentication with cookies
 
-const API_BASE = '/api/v1';
+import { config } from '@/config';
 
 interface ApiResponse<T = unknown> {
   version: string;
@@ -58,7 +58,7 @@ async function request<T>(
   endpoint: string,
   options: RequestInit = {}
 ): Promise<T> {
-  const response = await fetch(`${API_BASE}${endpoint}`, {
+  const response = await fetch(`${config.api.baseUrl}${endpoint}`, {
     ...options,
     credentials: 'include', // Important: include session cookies
     headers: {