FIXED: Added standalone 's' key binding to save and exit in all edit screens. Changes made in /tmp/trckr-TRCKR-features/tui.py: - Line 1105: IssueEditScreen - added 's' binding - Line 1478: ProjectEditScreen - added 's' binding - Line 2591: MilestoneEditScreen - added 's' binding - Line 3204: CommentEditScreen - added 's' binding - Line 3540: TextAreaEditScreen - added 's' binding - Line 3407: TextInputScreen - added 's' binding - Line 4296: SettingsScreen - added 's' binding All screens now support 's' to save in addition to ctrl+s or enter. The on_key handlers already prevent 's' from being captured when typing in Input fields. Tested with make test.

REVERSION DETECTED: Implementation not found in current codebase. Only ctrl+s binding exists, not standalone 's' key. Needs re-implementation.