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

lib/fetch.ts

@@ -1,10 +1,27 @@
 import { useState, useEffect, useCallback } from "react";
 
+// Set by lib/session.tsx once a token is available; read synchronously here so
+// callers never have to await SecureStore before every request.
+let authToken: string | null = null;
+
+export const setAuthToken = (token: string) => {
+  authToken = token;
+};
+
+export const clearAuthToken = () => {
+  authToken = null;
+};
+
 export const fetchAPI = async (url: string, options?: RequestInit) => {
   try {
-    const response = await fetch(url, options);
+    const headers = new Headers(options?.headers);
+    if (authToken && !headers.has("Authorization")) {
+      headers.set("Authorization", `Bearer ${authToken}`);
+    }
+
+    const response = await fetch(url, { ...options, headers });
     if (!response.ok) {
-      new Error(`HTTP error! status: ${response.status}`);
+      throw new Error(`HTTP error! status: ${response.status}`);
     }
     return await response.json();
   } catch (error) {