feat: support "exit" as a keyword to quit the session

pkg/tui/commands/commands.go

@@ -107,6 +107,26 @@ func builtInSessionCommands() []Item {
 				return core.CmdHandler(messages.ExitSessionMsg{})
 			},
 		},
+		{
+			ID:           "session.quit",
+			Label:        "Quit",
+			SlashCommand: "/quit",
+			Description:  "Quit the application (alias for /exit)",
+			Category:     "Session",
+			Execute: func(string) tea.Cmd {
+				return core.CmdHandler(messages.ExitSessionMsg{})
+			},
+		},
+		{
+			ID:           "session.q",
+			Label:        "Quit (short)",
+			SlashCommand: "/q",
+			Description:  "Quit the application (alias for /exit)",
+			Category:     "Session",
+			Execute: func(string) tea.Cmd {
+				return core.CmdHandler(messages.ExitSessionMsg{})
+			},
+		},
 		{
 			ID:           "session.export",
 			Label:        "Export",

pkg/tui/page/chat/chat.go

@@ -624,6 +624,13 @@ func (p *chatPage) cancelStream(showCancelMessage bool) tea.Cmd {
 // handleSendMsg handles incoming messages from the editor, either processing
 // them immediately or queuing them if the agent is busy.
 func (p *chatPage) handleSendMsg(msg msgtypes.SendMsg) (layout.Model, tea.Cmd) {
+	// Handle "exit", "quit", and ":q" as special keywords to quit the session
+	// immediately, equivalent to the /exit slash command.
+	switch strings.TrimSpace(msg.Content) {
+	case "exit", "quit", ":q":
+		return p, core.CmdHandler(msgtypes.ExitSessionMsg{})
+	}
+
 	// Predefined slash commands (e.g., /yolo, /exit, /compact) execute immediately
 	// even while the agent is working - they're UI commands that don't interrupt the stream.
 	// Custom agent commands (defined in config) should still be queued.