Initial commit: Tina Barcelona trip picker

Static Cloudflare Pages site + KV-backed Pages Function for jointly
planning Tina's Barcelona visit (7 Jul - 18 Aug 2026). List and calendar
views share one client state; dated evening events are radio groups to
prevent double-booking, multi-night shows live once in TRIP_DATA.spanning
instead of being duplicated per day, and undated collections get
optionally date-tagged when picked from the calendar view.

Includes a client-side-only password gate and an instructions page.
Live at https://summeroffun.hortal.me.

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

public/index.html

@@ -0,0 +1,41 @@
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title id="page-title">Tina's Lovely Summer in Barcelona</title>
+<link rel="stylesheet" href="style.css">
+</head>
+<body>
+  <div id="gate" class="gate">
+    <div class="gate-box">
+      <h1>🔒 Private plan</h1>
+      <p>What's the password?</p>
+      <input id="gate-input" class="gate-input" type="password" autocomplete="off" autocapitalize="off" spellcheck="false">
+      <button id="gate-submit" class="gate-submit">Enter</button>
+      <p id="gate-error" class="gate-error"></p>
+    </div>
+  </div>
+
+  <div id="content" class="gate-hidden">
+    <header class="page-header">
+      <h1 id="title"></h1>
+      <p id="subtitle" class="subtitle"></p>
+      <div id="status" class="status" aria-live="polite"></div>
+      <div id="view-toggle" class="view-toggle"></div>
+      <a href="instructions.html" class="how-it-works">How this page works →</a>
+    </header>
+
+    <main id="app"></main>
+
+    <aside id="shortlist" class="shortlist">
+      <h2>Your shortlist</h2>
+      <ul id="shortlist-list"></ul>
+      <p id="shortlist-empty" class="muted">Nothing picked yet — tap anything above.</p>
+    </aside>
+  </div>
+
+  <script src="data.js"></script>
+  <script src="app.js"></script>
+</body>
+</html>