Add event report dashboard, slide-out drawer, in-app comp portal + creator tracking

- Reporting: GET /api/stats aggregates check-in progress, ice, ticket types,
  people breakdown, add-ons/donors, gate-crew leaderboard (from audit),
  comp tickets by creator, and a by-hour check-in timeline. New /stats screen.
- Slide-out drawer (custom RN Animated, no new native deps) replaces per-screen
  header links; available on every main screen via a hamburger.
- In-app comp portal (/comp), password-gated like /crush33, reusing the portal
  endpoints; records the issuing gate-staff name (Created By column) and reports
  comps per creator.

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

app/lib/menu.tsx

@@ -0,0 +1,21 @@
+import { createContext, useContext, useState, type ReactNode } from "react";
+import SideMenu from "../components/SideMenu";
+
+interface MenuState {
+  open: () => void;
+  close: () => void;
+}
+
+const Ctx = createContext<MenuState>({ open: () => {}, close: () => {} });
+
+export function MenuProvider({ children }: { children: ReactNode }) {
+  const [visible, setVisible] = useState(false);
+  return (
+    <Ctx.Provider value={{ open: () => setVisible(true), close: () => setVisible(false) }}>
+      {children}
+      <SideMenu visible={visible} onClose={() => setVisible(false)} />
+    </Ctx.Provider>
+  );
+}
+
+export const useMenu = () => useContext(Ctx);