Reorganize into monorepo layout, move mitarbeiter-app to legacy reference

Consolidates the previously separate omsorgapp and omsorgCore repos
(each had their own nested .git with GitHub history) plus the old
root-level website/mitarbeiter-app into a single monorepo, matching
the structure already documented in the root CLAUDE.md. Also moves
the PHP employee app aside as omsorgWeb/mitarbeiter-app-legacy/ to
serve as a template for a ground-up rewrite.

Fixes .gitignore in the same pass: the config-secrets/uploads/data
patterns were unanchored (relative to repo root, not depth-agnostic),
so they silently stopped matching once the app moved under omsorgWeb/.
Patterns are now **/-prefixed and cover both mitarbeiter-app and
mitarbeiter-app-legacy, keeping DB/SMTP credentials and uploaded
employee documents out of version control.

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

omsorgWeb/mitarbeiter-app-legacy/pages/stundennachweis.php

@@ -0,0 +1,85 @@
+<?php
+require_once __DIR__ . '/../lib/auth.php';
+require_once __DIR__ . '/../lib/layout.php';
+require_login();
+
+$user_id = current_user()['id'];
+
+$stmt = db()->prepare('SELECT * FROM requests_stundennachweis WHERE user_id = ? ORDER BY created_at DESC');
+$stmt->execute([$user_id]);
+$requests = $stmt->fetchAll();
+
+$status_labels = ['pending' => 'Ausstehend', 'accepted' => 'Akzeptiert', 'rejected' => 'Abgelehnt'];
+
+layout_start('OMSORG – Stundennachweis', 'stundennachweis');
+?>
+<h1 class="main-title">🕐 Stundennachweis</h1>
+<p class="main-sub">Monatlichen Stundennachweis einreichen.</p>
+
+<?php if (isset($_GET['success'])): ?>
+  <div class="success" style="margin-top:16px">Nachweis erfolgreich eingereicht.</div>
+<?php elseif (isset($_GET['error'])): ?>
+  <div class="error" style="margin-top:16px"><?= e(urldecode($_GET['error'])) ?></div>
+<?php endif; ?>
+
+<div class="glass detail-card" style="margin-top:24px;max-width:480px">
+  <h2>Nachweis einreichen</h2>
+  <form action="../actions/submit-stundennachweis.php" method="post" enctype="multipart/form-data">
+    <?= csrf_field() ?>
+    <div class="monat-grid">
+      <label>
+        <span>Monat <span style="color:#ff8080">*</span></span>
+        <select name="monat_m" required>
+          <option value="">– Monat –</option>
+          <?php foreach (['01'=>'Januar','02'=>'Februar','03'=>'März','04'=>'April','05'=>'Mai','06'=>'Juni','07'=>'Juli','08'=>'August','09'=>'September','10'=>'Oktober','11'=>'November','12'=>'Dezember'] as $v => $l): ?>
+          <option value="<?= $v ?>"><?= $l ?></option>
+          <?php endforeach; ?>
+        </select>
+      </label>
+      <label>
+        <span>Jahr <span style="color:#ff8080">*</span></span>
+        <input type="number" name="monat_j" min="2020" max="2099"
+               value="<?= date('Y') ?>" required style="width:100%">
+      </label>
+    </div>
+    <label>
+      <span>Nachweis <span style="color:#ff8080">*</span></span>
+      <input type="file" name="datei" accept=".pdf,.jpg,.jpeg,.png" required>
+      <span class="hint">PDF, JPG, PNG &mdash; max. 12 MB</span>
+    </label>
+    <button type="submit" class="btn" style="margin-top:6px">Einreichen</button>
+  </form>
+</div>
+
+<?php if (!empty($requests)): ?>
+<div style="margin-top:40px">
+  <h2>Meine Nachweise</h2>
+  <table class="requests-table">
+    <thead>
+      <tr>
+        <th>Monat</th>
+        <th>Datei</th>
+        <th>Eingereicht</th>
+        <th>Status</th>
+        <th>Notiz</th>
+      </tr>
+    </thead>
+    <tbody>
+      <?php foreach ($requests as $r): ?>
+      <tr>
+        <td style="font-weight:800"><?= e(date('F Y', strtotime($r['monat'] . '-01'))) ?></td>
+        <td>
+          <a href="upload-serve.php?file=<?= e(rawurlencode($r['filename'])) ?>&name=<?= e(rawurlencode($r['original_name'])) ?>"
+             style="color:var(--cyan2)"><?= e($r['original_name']) ?></a>
+        </td>
+        <td style="color:var(--muted);font-size:.9rem"><?= e(date('d.m.Y', strtotime($r['created_at']))) ?></td>
+        <td><span class="badge badge-<?= e($r['status']) ?>"><?= e($status_labels[$r['status']] ?? $r['status']) ?></span></td>
+        <td style="color:var(--muted);font-size:.9rem"><?= $r['admin_note'] !== '' ? e($r['admin_note']) : '–' ?></td>
+      </tr>
+      <?php endforeach; ?>
+    </tbody>
+  </table>
+</div>
+<?php endif; ?>
+
+<?php layout_end(); ?>