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/actions/submit-einsatzbewertung.php

@@ -0,0 +1,54 @@
+<?php
+require_once __DIR__ . '/../lib/auth.php';
+require_once __DIR__ . '/../lib/db.php';
+require_login();
+
+if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+    header('Location: ../pages/einsatzbewertung.php');
+    exit;
+}
+
+$back = '../pages/einsatzbewertung.php';
+
+$einsatzort = trim($_POST['einsatzort'] ?? '');
+$von        = trim($_POST['von']        ?? '');
+$bis        = trim($_POST['bis']        ?? '');
+$bewertung  = (int)($_POST['bewertung'] ?? 0);
+$wieder     = isset($_POST['wieder']) ? 1 : 0;
+$feedback   = trim($_POST['feedback']   ?? '');
+
+if ($einsatzort === '') {
+    header('Location: ' . $back . '?error=' . urlencode('Bitte den Einsatzort angeben.'));
+    exit;
+}
+
+if ($von === '' || $bis === '') {
+    header('Location: ' . $back . '?error=' . urlencode('Von und Bis sind Pflichtfelder.'));
+    exit;
+}
+
+if (!strtotime($von) || !strtotime($bis)) {
+    header('Location: ' . $back . '?error=' . urlencode('Ungültiges Datum.'));
+    exit;
+}
+
+if (strtotime($von) > strtotime($bis)) {
+    header('Location: ' . $back . '?error=' . urlencode('Das Startdatum muss vor dem Enddatum liegen.'));
+    exit;
+}
+
+if ($bewertung < 1 || $bewertung > 5) {
+    header('Location: ' . $back . '?error=' . urlencode('Bitte eine Bewertung von 1 bis 5 Sternen auswählen.'));
+    exit;
+}
+
+$user_id = current_user()['id'];
+$now     = date('c');
+
+db()->prepare(
+    'INSERT INTO einsatzbewertungen (user_id, einsatzort, von, bis, bewertung, wieder, feedback, created_at)
+     VALUES (?, ?, ?, ?, ?, ?, ?, ?)'
+)->execute([$user_id, $einsatzort, $von, $bis, $bewertung, $wieder, $feedback, $now]);
+
+header('Location: ' . $back . '?success=1');
+exit;