fix: add CORS support for browser requests

Add @elysiajs/cors plugin to enable cross-origin requests.
This fixes ORB (Opaque Response Blocking) errors in Chrome when
fetching images from different origins.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: adiologydev

bun.lock

@@ -17,6 +17,7 @@
     "typescript": "^5.9.3"
   },
   "dependencies": {
+    "@elysiajs/cors": "^1.4.0",
     "@resvg/resvg-js": "^2.6.2",
     "elysia": "^1.4.18",
     "satori": "^0.18.3",

package.json

@@ -1,3 +1,4 @@
+import { cors } from "@elysiajs/cors";
 import { Elysia } from "elysia";
 import { config } from "./config";
 import { healthRoutes } from "./routes/health";
@@ -11,6 +12,7 @@ if (config.cacheMode === "disk") {
 }
 
 const app = new Elysia()
+  .use(cors())
   .onError(({ error, code, set }) => {
     // Don't log Elysia's built-in NOT_FOUND errors (these are normal 404s)
     if (code === "NOT_FOUND") {