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/_layout.tsx

@@ -1,4 +1,3 @@
-import { ClerkProvider, ClerkLoaded } from "@clerk/clerk-expo";
 import { useFonts } from "expo-font";
 import { Stack } from "expo-router";
 import * as SplashScreen from "expo-splash-screen";
@@ -7,7 +6,7 @@ import { useEffect } from "react";
 import { LogBox } from "react-native";
 import "react-native-reanimated";
 
-import { tokenCache } from "@/lib/auth";
+import { SessionProvider } from "@/lib/session";
 
 // Prevent the splash screen from auto-hiding before asset loading is complete.
 SplashScreen.preventAutoHideAsync();
@@ -35,22 +34,16 @@ const RootLayout = () => {
     return null;
   }
 
-  const publishableKey = process.env.EXPO_PUBLIC_CLERK_PUBLISHABLE_KEY!;
-
-  if (!publishableKey) throw new Error("Missing Clerk Publishable Key.");
-
   return (
-    <ClerkProvider publishableKey={publishableKey} tokenCache={tokenCache}>
-      <ClerkLoaded>
-        <Stack>
-          <Stack.Screen name="index" options={{ headerShown: false }} />
-          <Stack.Screen name="(root)" options={{ headerShown: false }} />
-          <Stack.Screen name="(auth)" options={{ headerShown: false }} />
-        </Stack>
+    <SessionProvider>
+      <Stack>
+        <Stack.Screen name="index" options={{ headerShown: false }} />
+        <Stack.Screen name="(root)" options={{ headerShown: false }} />
+        <Stack.Screen name="(auth)" options={{ headerShown: false }} />
+      </Stack>
 
-        <StatusBar style="dark" />
-      </ClerkLoaded>
-    </ClerkProvider>
+      <StatusBar style="dark" />
+    </SessionProvider>
   );
 };