feat: remove environment variables from configuration and set default endpoint directly

next.config.js

@@ -1,6 +1 @@
-module.exports = {
-  env: {
-    NEXT_PUBLIC_API_BASE_URL: process.env.NEXT_PUBLIC_API_BASE_URL,
-    NEXT_PUBLIC_DEFAULT_ENDPOINT: process.env.NEXT_PUBLIC_DEFAULT_ENDPOINT
-  }
-}
+module.exports = {}

src/store.ts

@@ -89,7 +89,7 @@ export const usePlaygroundStore = create<PlaygroundStore>()(
       setHasStorage: (hasStorage) => set(() => ({ hasStorage })),
       chatInputRef: { current: null },
       selectedEndpoint:
-        process.env.NEXT_PUBLIC_DEFAULT_ENDPOINT || 'https://sifa-classification-agentic-rag-99329044472.asia-south1.run.app',
+        'https://sifa-classification-agentic-rag-99329044472.asia-south1.run.app',
       setSelectedEndpoint: (selectedEndpoint) =>
         set(() => ({ selectedEndpoint })),
       agents: [],