feat: add CORS support for API and update .gitignore and configuration documentation

.gitignore

@@ -27,3 +27,4 @@ site
 cache
 public/world.json
 .dev.*
+.kiro/steering/locale.md

docs/configuration.md

@@ -61,3 +61,7 @@ Set the maximum query data volume for the Metric list.
 ## `NUXT_DISABLE_BOT_ACCESS_LOG`
 
 Access statistics do not count bot traffic.
+
+## `NUXT_API_CORS`
+
+Set the environment variable `NUXT_API_CORS=true` during build to enable CORS support for the API.

nuxt.config.ts

@@ -50,6 +50,9 @@ export default defineNuxtConfig({
     '/dashboard': {
       redirect: '/dashboard/links',
     },
+    '/api/**': {
+      cors: process.env.NUXT_API_CORS === 'true',
+    },
   },
 
   future: {
@@ -60,10 +63,6 @@ export default defineNuxtConfig({
     enforceModuleCompatibility: true,
   },
 
-  compatibilityDate: {
-    cloudflare: '2025-05-08',
-  },
-
   nitro: {
     experimental: {
       openAPI: true,