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/(root)/find-ride.tsx

@@ -10,10 +10,20 @@ const FindRide = () => {
   const {
     userAddress,
     destinationAddress,
+    userLatitude,
+    userLongitude,
+    destinationLatitude,
+    destinationLongitude,
     setDestinationLocation,
     setUserLocation,
   } = useLocationStore();
 
+  const canFind =
+    !!userLatitude &&
+    !!userLongitude &&
+    !!destinationLatitude &&
+    !!destinationLongitude;
+
   return (
     <RideLayout title="Ride" snapPoints={["85%"]}>
       <View className="my-3">
@@ -43,7 +53,8 @@ const FindRide = () => {
       <CustomButton
         title="Find now"
         onPress={() => router.push("/(root)/confirm-ride")}
-        className="mt-5"
+        disabled={!canFind}
+        className={`mt-5 ${!canFind ? "opacity-50" : ""}`}
       />
     </RideLayout>
   );