Build core domain: orgs, users, jobs, locate points, auth, live map

Replaces the device-events demo with the actual product:

- Prisma + PostGIS data layer (postgis/postgis:17-3.5). Lat/lng decimals
  are the source of truth; a generated geometry(Point,4326) column with
  a GIST index backs bbox queries. Migrations apply on container boot.
- JWT auth (bcryptjs + httpOnly cookie) with public registration that
  creates an org; per-org roles (ORG_ADMIN/MEMBER/VIEWER) enforced by
  guards on all /orgs/:orgId routes.
- Scoped API keys (X-API-Key, sha256-hashed, shown once) for
  programmatic access, manageable by org admins.
- REST API: jobs/tickets CRUD with filters, points query (time range,
  recordedAt cursor, bbox), members, devices, api-keys.
- MQTT ingest: devices publish to devices/{username}/points and /jobs;
  unknown tickets auto-create stub jobs (source=DEVICE); every message
  is raw-logged to device_events; acks on devices/{username}/jobs/ack.
  Broker gets a dedicated backend user; testuser is now a plain device.
- Realtime: plain-WS gateway at /api/ws (socket.io removed) with
  cookie auth and per-job channels feeding the map live.
- Next.js frontend: login/register, jobs list with filters, job detail
  with live Google map (APWA utility colors, polylines per run) behind
  a provider-neutral JobMap abstraction for a future Esri swap, and
  settings pages for members/devices/api-keys.
- Seed: Umagul org, admin user, testuser device, demo job with RTK
  points. Sample publisher updated to the new topic contract.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

web/lib/auth-context.tsx

@@ -0,0 +1,124 @@
+import { useRouter } from 'next/router';
+import { createContext, ReactNode, useCallback, useContext, useEffect, useMemo, useState } from 'react';
+import { api, ApiError } from './api';
+
+export interface AuthUser {
+  id: string;
+  email: string;
+  name: string;
+}
+
+export interface Membership {
+  role: 'ORG_ADMIN' | 'MEMBER' | 'VIEWER';
+  org: { id: string; name: string; slug: string };
+}
+
+interface MeResponse {
+  user: AuthUser;
+  memberships: Membership[];
+}
+
+interface AuthContextValue {
+  user: AuthUser | null;
+  memberships: Membership[];
+  activeOrg: Membership | null;
+  loading: boolean;
+  setActiveOrgId: (orgId: string) => void;
+  login: (email: string, password: string) => Promise<void>;
+  register: (data: { email: string; password: string; name: string; orgName: string }) => Promise<void>;
+  logout: () => Promise<void>;
+}
+
+const AuthContext = createContext<AuthContextValue | null>(null);
+
+const ACTIVE_ORG_KEY = 'ulhub_active_org';
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  const [user, setUser] = useState<AuthUser | null>(null);
+  const [memberships, setMemberships] = useState<Membership[]>([]);
+  const [activeOrgId, setActiveOrgIdState] = useState<string | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  const applySession = useCallback((session: MeResponse) => {
+    setUser(session.user);
+    setMemberships(session.memberships);
+    setActiveOrgIdState((current) => {
+      const stored = current ?? localStorage.getItem(ACTIVE_ORG_KEY);
+      const valid = session.memberships.some((m) => m.org.id === stored);
+      return valid ? stored : (session.memberships[0]?.org.id ?? null);
+    });
+  }, []);
+
+  useEffect(() => {
+    api
+      .get<MeResponse>('/api/auth/me')
+      .then(applySession)
+      .catch(() => setUser(null))
+      .finally(() => setLoading(false));
+  }, [applySession]);
+
+  const setActiveOrgId = useCallback((orgId: string) => {
+    localStorage.setItem(ACTIVE_ORG_KEY, orgId);
+    setActiveOrgIdState(orgId);
+  }, []);
+
+  const login = useCallback(
+    async (email: string, password: string) => {
+      applySession(await api.post<MeResponse>('/api/auth/login', { email, password }));
+    },
+    [applySession],
+  );
+
+  const register = useCallback(
+    async (data: { email: string; password: string; name: string; orgName: string }) => {
+      applySession(await api.post<MeResponse>('/api/auth/register', data));
+    },
+    [applySession],
+  );
+
+  const logout = useCallback(async () => {
+    await api.post('/api/auth/logout', {}).catch(() => undefined);
+    localStorage.removeItem(ACTIVE_ORG_KEY);
+    setUser(null);
+    setMemberships([]);
+    setActiveOrgIdState(null);
+  }, []);
+
+  const value = useMemo<AuthContextValue>(
+    () => ({
+      user,
+      memberships,
+      activeOrg: memberships.find((m) => m.org.id === activeOrgId) ?? null,
+      loading,
+      setActiveOrgId,
+      login,
+      register,
+      logout,
+    }),
+    [user, memberships, activeOrgId, loading, setActiveOrgId, login, register, logout],
+  );
+
+  return <AuthContext.Provider value={value}>{children}</AuthContext.Provider>;
+}
+
+export function useAuth(): AuthContextValue {
+  const ctx = useContext(AuthContext);
+  if (!ctx) {
+    throw new Error('useAuth must be used inside AuthProvider');
+  }
+  return ctx;
+}
+
+// Client-side page guard: redirects to /login when unauthenticated.
+export function useRequireAuth() {
+  const auth = useAuth();
+  const router = useRouter();
+  useEffect(() => {
+    if (!auth.loading && !auth.user) {
+      router.replace('/login');
+    }
+  }, [auth.loading, auth.user, router]);
+  return auth;
+}
+
+export { ApiError };