feat: v0.1.5 - no default selection, stay on file list after convert, improved help menu

- Files no longer selected by default (user must select manually)
- After conversion, stays on file list (no more stateResults/esc to reconvert)
- x key resets done file to idle (delete output + reconvert in one)
- p key opens output if done, otherwise input file
- Help menu now has cream background, title bar, and divider to blend in smoothly
- Removed stateResults entirely - simplified to single state

cli/internal/update/update.go

@@ -14,7 +14,7 @@ import (
 
 const (
 	// CurrentVersion is the embedded build version. Updated at release time.
-	CurrentVersion = "0.1.4"
+	CurrentVersion = "0.1.5"
 
 	repoOwner = "noauf"
 	repoName  = "Transmute"