tui: revamp footer (some more)

Simplified layout logic, reorganized elements

pkg/tui/views/chat/chat.go

@@ -107,6 +107,28 @@ type Model struct {
 	elapsed    time.Duration
 }
 
+func getSpinner() spinner.Model {
+	return spinner.New(spinner.WithSpinner(
+		spinner.Spinner{
+			Frames: []string{
+				"∙∙∙",
+				"●∙∙",
+				"●●∙",
+				"●●●",
+				"∙●●",
+				"∙∙●",
+				"∙∙∙",
+				"∙∙●",
+				"∙●●",
+				"●●●",
+				"●●∙",
+				"●∙∙",
+			},
+			FPS: 440 * time.Millisecond,
+		},
+	))
+}
+
 func Chat(app *model.AppModel) *Model {
 	m := Model{
 		App: app,
@@ -121,21 +143,9 @@ func Chat(app *model.AppModel) *Model {
 		wrap:            true,
 		selectedMessage: -1,
 
-		content: viewport.New(0, 0),
-		input:   textarea.New(),
-		spinner: spinner.New(spinner.WithSpinner(
-			spinner.Spinner{
-				Frames: []string{
-					".  ",
-					".. ",
-					"...",
-					".. ",
-					".  ",
-					"   ",
-				},
-				FPS: time.Second / 3,
-			},
-		)),
+		content:     viewport.New(0, 0),
+		input:       textarea.New(),
+		spinner:     getSpinner(),
 		replyCursor: cursor.New(),
 	}