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/users.ts

@@ -0,0 +1,39 @@
+import { sql } from "@/lib/db";
+import { signJwt } from "@/lib/jwt";
+
+export type UserProfile = {
+  id: string;
+  name: string;
+  email: string;
+  role: string | null;
+};
+
+type UserRow = {
+  id: string;
+  name: string;
+  email: string;
+  role: string | null;
+};
+
+export const toProfile = (row: UserRow): UserProfile => ({
+  id: row.id,
+  name: row.name,
+  email: row.email,
+  role: row.role,
+});
+
+export const issueSession = (
+  row: UserRow,
+): { token: string; user: UserProfile } => ({
+  token: signJwt({ sub: row.id, email: row.email }),
+  user: toProfile(row),
+});
+
+export const findUserByEmail = async (
+  email: string,
+): Promise<UserRow | null> => {
+  const rows = await sql<UserRow>`
+    SELECT id, name, email, role FROM users WHERE email = ${email}
+  `;
+  return rows[0] ?? null;
+};