refactor: flatten monorepo into standalone project

src/routes/api/$.ts

@@ -0,0 +1,44 @@
+import { OpenAPIHandler } from '@orpc/openapi/fetch'
+import { OpenAPIReferencePlugin } from '@orpc/openapi/plugins'
+import { onError } from '@orpc/server'
+import { ZodToJsonSchemaConverter } from '@orpc/zod/zod4'
+import { createFileRoute } from '@tanstack/react-router'
+import { name, version } from '@/../package.json'
+import { handleValidationError, logError } from '@/server/api/interceptors'
+import { router } from '@/server/api/routers'
+
+const handler = new OpenAPIHandler(router, {
+  plugins: [
+    new OpenAPIReferencePlugin({
+      docsProvider: 'scalar',
+      schemaConverters: [new ZodToJsonSchemaConverter()],
+      specGenerateOptions: {
+        info: {
+          title: name,
+          version,
+        },
+      },
+      docsPath: '/docs',
+      specPath: '/spec.json',
+    }),
+  ],
+  interceptors: [onError(logError)],
+  clientInterceptors: [onError(handleValidationError)],
+})
+
+export const Route = createFileRoute('/api/$')({
+  server: {
+    handlers: {
+      ANY: async ({ request }) => {
+        const { response } = await handler.handle(request, {
+          prefix: '/api',
+          context: {
+            headers: request.headers,
+          },
+        })
+
+        return response ?? new Response('Not Found', { status: 404 })
+      },
+    },
+  },
+})