feat(editor): display exit on Escape key

It is not common for TUI text editors on exit
when you press Escape once.
Emacs, nano, and Vim don't do it.
The user's muscle memory lead them to exit accidentally.

Author: dbohdan

README.md

@@ -461,7 +461,7 @@ The editor includes the following key bindings.
 #### Session
 
 - **Ctrl+D**: Save and exit
-- **Esc**/**Ctrl+C**: Exit without saving
+- **Ctrl+C**: Exit without saving
 
 #### Navigation
 

editor.png

@@ -25,8 +25,8 @@ type editor struct {
 type cancelError struct{}
 
 const (
-	bannerNoSave    = "[ Ctrl+V: Paste ] [ Esc: Cancel ]"
-	bannerSave      = "[ Ctrl+D: Save ] [ Ctrl+V: Paste ] [ Esc: Cancel ]"
+	bannerNoSave    = "[ Ctrl+V: Paste ] [ Ctrl+C: Cancel ]"
+	bannerSave      = "[ Ctrl+D: Save ] [ Ctrl+V: Paste ] [ Ctrl+C: Cancel ]"
 	editorCharLimit = 1 << 16
 )
 
@@ -48,7 +48,7 @@ func (e editor) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case tea.KeyMsg:
 		switch msg.Type {
 
-		case tea.KeyEsc, tea.KeyCtrlC:
+		case tea.KeyCtrlC:
 			e.err = CancelError
 			return e, tea.Quit