Initial Release: Lütte Planer mit Google-Login-Vorbereitung

- Login-System (Mock für Tests, Google OAuth vorbereitet)
- Reisen erstellen mit Emoji, Ziel und Datum
- Ablauf (Timeline), Packliste, Ideen, Notizen, Dokumente
- Team-System: Personen einladen per E-Mail + Einladungslinks
- Berechtigungen: Nur lesen / Bearbeiten / Admin
- E-Mail-Benachrichtigungen beim Einladen

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ideen.php

@@ -0,0 +1,107 @@
+<?php
+require_once __DIR__ . '/config.php';
+$tripId = $_GET['trip'] ?? '';
+[$trip, $user] = requireTripAccess($tripId);
+$canEdit = userCanEdit($tripId, $user['id']);
+
+if ($canEdit && $_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['add'])) {
+    dbInsert('ideen', [
+        'trip_id'     => $tripId,
+        'titel'       => trim($_POST['titel'] ?? ''),
+        'beschreibung'=> trim($_POST['beschreibung'] ?? ''),
+        'link'        => trim($_POST['link'] ?? ''),
+        'status'      => 'offen',
+        'created_by'  => $user['id'],
+    ]);
+    header('Location: /Develop/PlanerGoogel/ideen.php?trip=' . $tripId); exit;
+}
+
+if ($canEdit && $_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['status'])) {
+    $statuses = ['offen', 'geplant', 'erledigt'];
+    $newStatus = $_POST['status'];
+    if (in_array($newStatus, $statuses)) {
+        dbExec('UPDATE ideen SET status = ? WHERE id = ? AND trip_id = ?', [$newStatus, (int)$_POST['id'], $tripId]);
+    }
+    header('Location: /Develop/PlanerGoogel/ideen.php?trip=' . $tripId); exit;
+}
+
+if ($canEdit && $_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['delete'])) {
+    dbExec('DELETE FROM ideen WHERE id = ? AND trip_id = ?', [(int)$_POST['delete'], $tripId]);
+    header('Location: /Develop/PlanerGoogel/ideen.php?trip=' . $tripId); exit;
+}
+
+$ideen = dbAll(
+    'SELECT i.*, u.name as user_name FROM ideen i
+     LEFT JOIN users u ON u.id = i.created_by
+     WHERE i.trip_id = ?
+     ORDER BY CASE i.status WHEN "geplant" THEN 0 WHEN "offen" THEN 1 ELSE 2 END, i.id DESC',
+    [$tripId]
+);
+
+$statusMap = [
+    'offen'    => ['label' => 'Offen',    'class' => 'badge-plan',   'icon' => '💡'],
+    'geplant'  => ['label' => 'Geplant',  'class' => 'badge-active', 'icon' => '📅'],
+    'erledigt' => ['label' => 'Erledigt', 'class' => 'badge-done',   'icon' => '✅'],
+];
+
+$pageTitle = 'Ideen';
+$activeTab = 'ideen';
+include __DIR__ . '/includes/header.php';
+?>
+
+<main class="main">
+  <div class="page-header">
+    <h1 class="section-head">Ideen</h1>
+    <?php if ($canEdit): ?>
+    <button class="btn btn-primary" onclick="toggleForm('add-form')">+ Idee</button>
+    <?php endif; ?>
+  </div>
+
+  <?php if ($canEdit): ?>
+  <div id="add-form" class="add-form hidden">
+    <form method="POST" style="display:contents;">
+      <input type="text" name="titel" placeholder="Idee *" required style="min-width:200px;">
+      <input type="text" name="beschreibung" placeholder="Beschreibung">
+      <input type="url" name="link" placeholder="Link (optional)">
+      <button type="submit" name="add" class="btn btn-primary">Hinzufügen</button>
+    </form>
+  </div>
+  <?php endif; ?>
+
+  <?php if (empty($ideen)): ?>
+  <div class="empty"><div class="empty-icon">💡</div><p>Noch keine Ideen gesammelt.</p></div>
+  <?php else: ?>
+  <div class="ideen-grid">
+    <?php foreach ($ideen as $ide): $s = $statusMap[$ide['status']] ?? $statusMap['offen']; ?>
+    <div class="idee-card">
+      <div class="idee-header">
+        <span class="idee-icon"><?= $s['icon'] ?></span>
+        <div class="idee-title"><?= h($ide['titel']) ?></div>
+        <span class="tl-badge <?= $s['class'] ?>"><?= $s['label'] ?></span>
+      </div>
+      <?php if ($ide['beschreibung']): ?>
+      <div class="idee-desc"><?= h($ide['beschreibung']) ?></div>
+      <?php endif; ?>
+      <?php if ($ide['link']): ?>
+      <a href="<?= h($ide['link']) ?>" target="_blank" rel="noopener" class="idee-link">🔗 <?= h(parse_url($ide['link'], PHP_URL_HOST) ?: $ide['link']) ?></a>
+      <?php endif; ?>
+      <?php if ($canEdit): ?>
+      <div class="idee-actions">
+        <?php foreach (['offen', 'geplant', 'erledigt'] as $st): if ($st === $ide['status']) continue; ?>
+        <form method="POST" style="display:inline;">
+          <input type="hidden" name="id" value="<?= $ide['id'] ?>">
+          <button type="submit" name="status" value="<?= $st ?>" class="btn-secondary" style="font-size:.72rem;padding:4px 10px;"><?= $statusMap[$st]['label'] ?></button>
+        </form>
+        <?php endforeach; ?>
+        <form method="POST" style="display:inline;" onsubmit="return confirm('Idee löschen?')">
+          <button type="submit" name="delete" value="<?= $ide['id'] ?>" class="btn-delete">✕</button>
+        </form>
+      </div>
+      <?php endif; ?>
+    </div>
+    <?php endforeach; ?>
+  </div>
+  <?php endif; ?>
+</main>
+
+<?php include __DIR__ . '/includes/footer.php'; ?>