feat(frontend): register, guide, feedback, addresses & status polling

- Add register screen with onboarding redirect to address validation
- Add waste separation guide screen with 4 categories and offline tips
  (organicos, reciclables, sanitarios, especiales) plus preventive
  messaging banner
- Add feedback submission screen with 4 types and 1-5 star rating
- Add address screen: list colonias, pick one, validate against backend
- Switch from pull-to-refresh GPS hack to periodic polling of
  /tracking/status (30s) — backend now drives the simulation
- Filter notifications by logged-in user.id (tunnel-view on client side)
- Add register/logout/address actions to profile screen
- Hide login/register/feedback/addresses from tab bar (href: null)
- Set API_URL to LAN IP for physical phone testing over hotspot

frontend/src/services/feedback.service.ts

@@ -0,0 +1,31 @@
+import { apiFetch } from "../lib/api";
+
+export type FeedbackType =
+  | "TRUCK_DID_NOT_PASS"
+  | "RATING"
+  | "SUGGESTION"
+  | "OTHER";
+
+export interface FeedbackPayload {
+  type: FeedbackType;
+  message: string;
+  rating?: number;
+}
+
+export interface FeedbackItem {
+  id: string;
+  userId: number;
+  type: FeedbackType;
+  message: string;
+  rating?: number;
+  createdAt: string;
+}
+
+export const submitFeedback = (payload: FeedbackPayload) =>
+  apiFetch<FeedbackItem>("/api/feedback", {
+    method: "POST",
+    body: JSON.stringify(payload),
+  });
+
+export const listMyFeedback = () =>
+  apiFetch<FeedbackItem[]>("/api/feedback/me");