continue generating flow, add backend connection on main tabs

src/config/firebase.js

@@ -33,9 +33,21 @@ if (!firebase?.apps?.filter(({ name_ }) => name_ === "[DEFAULT]").length) {
   console.log("Firebase init");
 }
 
+// Firestore settings for React Native/iOS: avoid streaming transport issues
 const firestore = firebase.firestore();
+try {
+  // Prefer auto-detect; disable fetch streams for RN iOS stability
+  firebase.firestore().settings({
+    experimentalAutoDetectLongPolling: true,
+    useFetchStreams: false,
+    ignoreUndefinedProperties: true,
+  });
+} catch (e) {
+  // Ignore if settings were already set elsewhere
+}
 
 export const usersRef = firestore.collection("users");
+export const projectsRef = firestore.collection("projects");
 export const notificationsRef = firestore.collection("notifications");
 export const documentsRef = firestore.collection("documents");
 export const chatsRef = firestore.collection("chats");