Help guide opens on demand only; add At the door to admin quick actions

- The site-wide help guide no longer auto-opens on first visit to a page
  — it only opens when the help button is clicked. Removed the
  now-pointless "Don't show this again" checkbox and the per-page
  dismissal tracking it drove.
- Admin dashboard quick actions was missing "At the door" (walk-in
  registration, payments, ticket printing), which Supervisor already had.

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

frontend/src/hooks/useHelpGuide.ts

@@ -1,42 +1,14 @@
 "use client";
 
-import { useEffect, useState } from "react";
+import { useState } from "react";
 
 /**
- * Open/close state for a help guide, with per-page "don't show again"
- * persistence. `storageKey` should be a stable slug identifying the guide's
- * content (e.g. "reports", "dashboard-user", "general") — each slug gets an
- * independent dismissal flag, so dismissing one page's guide doesn't
- * suppress another's.
+ * Open/close state for a help guide — opens only when the user explicitly
+ * asks for it (e.g. clicking the help FAB), never automatically.
  */
-export function useHelpGuide(storageKey: string) {
+export function useHelpGuide() {
   const [open, setOpen] = useState(false);
-  const dismissedKey = `hope_events_help_dismissed_${storageKey}`;
-
-  // Show automatically on first visit to this guide, unless dismissed for good.
-  useEffect(() => {
-    try {
-      if (typeof window !== "undefined" && window.localStorage.getItem(dismissedKey) !== "1") {
-        setOpen(true);
-      }
-    } catch {
-      // localStorage unavailable (private browsing, etc.) — just don't auto-show.
-    }
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [dismissedKey]);
-
   const openGuide = () => setOpen(true);
-
-  const closeGuide = (dontShowAgain: boolean) => {
-    setOpen(false);
-    if (dontShowAgain) {
-      try {
-        window.localStorage.setItem(dismissedKey, "1");
-      } catch {
-        // ignore
-      }
-    }
-  };
-
+  const closeGuide = () => setOpen(false);
   return { open, openGuide, closeGuide };
 }