Ask about the chat's own folder when deleting a chat

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

CHANGELOG.md

@@ -3,6 +3,14 @@
 All notable changes to CodeCraft. Versions follow [Semantic Versioning](https://semver.org/);
 until 1.0, minor versions may contain breaking changes.
 
+## [Unreleased]
+
+### Added
+
+- **Deleting a chat asks about its folder**: if the chat has a folder of its own (inside your folders,
+  not shared with any other chat, no project folder), you can delete it with the chat – with the
+  number of files, size and a warning for git repositories. The server checks again before deleting.
+
 ## [v202611-00036] – 2026-11-15
 
 ### Added