Fix uploaded images reaching Claude Code empty

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

CHANGELOG.md

@@ -3,6 +3,13 @@
 All notable changes to CodeCraft. Versions follow [Semantic Versioning](https://semver.org/);
 until 1.0, minor versions may contain breaking changes.
 
+## [Unreleased]
+
+### Fixed
+
+- **Images you upload reach Claude Code**: its chats read the history without the image bytes, so the
+  files it was pointed to were empty. Images without data are no longer written as empty files.
+
 ## [v202611-00039] – 2026-11-15
 
 ### Changed