Add self-hosted auth, admin API, and owner web dashboard

- Replace Clerk with self-hosted JWT auth (register/login/verify, bcrypt
  passwords, Gmail OTP with console fallback)
- Add lib/db.ts pg pool + transaction helpers; seed script migrates legacy
  Clerk-era schema (drop clerk_id, enforce UUID ids and unique email)
- Add owner-gated admin API: stats, users, drivers CRUD, rides
- Add dashboard/ Vite React owner dashboard (login, overview, users,
  fleet, rides) with dev-server proxy to avoid Expo CORS middleware
- Add scripts/set-owner.mjs for role management

app/index.tsx

@@ -1,21 +1,35 @@
-import { useAuth } from "@clerk/clerk-expo";
 import { Redirect } from "expo-router";
 import { useEffect, useState } from "react";
 import { ActivityIndicator, View } from "react-native";
 
 import { fetchAPI } from "@/lib/fetch";
+import { useSession } from "@/lib/session";
 
 const App = () => {
-  const { isSignedIn, userId } = useAuth();
+  const { isLoaded, isSignedIn, user } = useSession();
   const [role, setRole] = useState<string | null | undefined>(undefined);
 
   useEffect(() => {
-    if (!isSignedIn || !userId) return;
+    if (!isSignedIn) return;
 
-    fetchAPI(`/(api)/user?clerkId=${userId}`)
+    // Prefer the role cached at sign-in; fall back to a fresh fetch.
+    if (user?.role !== undefined && user?.role !== null) {
+      setRole(user.role);
+      return;
+    }
+
+    fetchAPI("/(api)/user")
       .then((res) => setRole(res?.data?.role ?? null))
       .catch(() => setRole(null));
-  }, [isSignedIn, userId]);
+  }, [isSignedIn, user]);
+
+  if (!isLoaded) {
+    return (
+      <View className="flex-1 items-center justify-center bg-white">
+        <ActivityIndicator size="large" color="#0286FF" />
+      </View>
+    );
+  }
 
   if (!isSignedIn) return <Redirect href="/(auth)/welcome" />;