- Fix KeyError 'root' in FileGrouper when merging groups with no root-level files - Fix changelog commit parsing breaking on multiline bodies (use %x00 separator) - Add empty choices/content checks in OpenAI, Anthropic, OpenRouter providers - Fix config edit crash when config is empty - Fix validate command using wrong color for 'no staged files' - Add type check for corrupted YAML config (non-dict returns empty dict)