Initial commit: CookIT recipe collection and week planner

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,25 @@
+# Private recipe data — never commit
+*.xlsm
+*.xlsx
+tools/excel-import/out/
+*.cookit.zip
+cookit-rezepte*.zip
+
+# Python tooling
+.venv/
+__pycache__/
+.pytest_cache/
+
+# Flutter/Dart
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+*.iml
+.idea/
+/android/app/debug
+/android/app/profile
+/android/app/release