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/(auth)/sign-in.tsx

@@ -1,4 +1,3 @@
-import { useSignIn } from "@clerk/clerk-expo";
 import { Link, useRouter } from "expo-router";
 import { useCallback, useState } from "react";
 import { Alert, Image, ScrollView, Text, View } from "react-native";
@@ -7,42 +6,45 @@ import { CustomButton } from "@/components/custom-button";
 import { InputField } from "@/components/input-field";
 import { OAuth } from "@/components/oauth";
 import { icons, images } from "@/constants";
+import { fetchAPI } from "@/lib/fetch";
+import { useSession } from "@/lib/session";
 
 const SignIn = () => {
   const router = useRouter();
-  const { signIn, setActive, isLoaded } = useSignIn();
+  const { isLoaded, setSession } = useSession();
   const [form, setForm] = useState({
     email: "",
     password: "",
   });
 
   const onSignInPress = useCallback(async () => {
-    if (!isLoaded) return;
-
     try {
-      const signInAttempt = await signIn.create({
-        identifier: form.email,
-        password: form.password,
+      const response = await fetchAPI("/(api)/auth/login", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({
+          email: form.email,
+          password: form.password,
+        }),
       });
 
-      if (signInAttempt.status === "complete") {
-        await setActive({ session: signInAttempt.createdSessionId });
-        router.replace("/");
-      } else {
-        Alert.alert("Error", "Invalid email or password.");
-        setForm((prevForm) => ({
-          ...prevForm,
-          password: "",
-        }));
-      }
+      await setSession(response.data);
+      router.replace("/");
     } catch (err: any) {
-      Alert.alert("Error", err?.errors[0]?.longMessage);
+      const status = String(err?.message ?? "");
+      const message = status.includes("403")
+        ? "Please verify your email first."
+        : status.includes("401")
+          ? "Invalid email or password."
+          : "Could not sign in. Please try again.";
+
+      Alert.alert("Error", message);
       setForm((prevForm) => ({
         ...prevForm,
         password: "",
       }));
     }
-  }, [isLoaded, signIn, form.email, form.password, setActive, router]);
+  }, [isLoaded, form.email, form.password, setSession, router]);
 
   return (
     <ScrollView className="flex-1 bg-white">