added firestore config

src/lib/firebase.ts

@@ -1,5 +1,6 @@
 import { initializeApp } from 'firebase/app'
 import { getAuth, GoogleAuthProvider } from 'firebase/auth'
+import { getFirestore, connectFirestoreEmulator } from 'firebase/firestore'
 
 const firebaseConfig = {
   apiKey: import.meta.env.VITE_FIREBASE_API_KEY,
@@ -12,5 +13,15 @@ const firebaseConfig = {
 }
 
 const app = initializeApp(firebaseConfig)
+
+// Auth initialization
 export const auth = getAuth(app)
 export const googleProvider = new GoogleAuthProvider()
+
+// Firestore initialization
+export const db = getFirestore(app)
+
+// Enable Firestore emulator in development (uncomment when testing locally)
+// if (import.meta.env.DEV) {
+//   connectFirestoreEmulator(db, 'localhost', 8080)
+// }