feat(editor): do not exit on Esc

It is not common for TUI text editors to exit
when the user presses the Escape key once.
Emacs, nano, and Vim don't do it.
Muscle memory can lead the user to press Escape and 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