feat: add command menu triggered by : with quit command

Co-authored-by: aider (ollama_chat/gemma4:31b) <aider@aider.chat>

main.go

@@ -3,8 +3,8 @@ package main
 import (
 	"fmt"
 
-	"github.com/rivo/tview"
 	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
 )
 
 type Brew struct {
@@ -49,18 +49,46 @@ func main() {
 		table.SetCell(row, 2, tview.NewTableCell(brew.Progress))
 	}
 
+	// Command Input Field
+	cmdInput := tview.NewInputField().
+		SetLabel(": ").
+		SetFieldWidth(0)
+
+	// Handle command execution
+	cmdInput.SetDoneFunc(func(key tcell.EventKey) {
+		text := cmdInput.GetText()
+		if text == "q" || text == "quit" {
+			app.Stop()
+		} else {
+			// Reset input and return focus to table if command is unknown
+			cmdInput.SetText("")
+			app.SetFocus(table)
+		}
+	})
+
 	// Footer
 	footer := tview.NewTextView().
 		SetTextAlign(tview.AlignCenter).
-		SetText(" Press Ctrl+C to exit ")
+		SetText(" Press : for commands | Press Ctrl+C to exit ")
 
 	// Layout: Vertical flex
 	flex := tview.NewFlex().
 		SetDirection(tview.FlexRow).
 		AddItem(header, 1, 1, false).
 		AddItem(table, 0, 1, true).
+		AddItem(cmdInput, 1, 1, false).
 		AddItem(footer, 1, 1, false)
 
+	// Global input capture to trigger the command menu
+	app.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
+		if event.Key() == tcell.KeyRune && event.Rune() == ':' {
+			app.SetFocus(cmdInput)
+			cmdInput.SetText("")
+			return nil // Consume the event so ':' isn't typed into the field
+		}
+		return event
+	})
+
 	if err := app.SetRoot(flex, true).Run(); err != nil {
 		fmt.Printf("Error running application: %v\n", err)
 	}