Chat view cleanup

Replace `waitingForReply` and the `status` string with the `state`
variable.

pkg/tui/views/chat/chat.go

@@ -13,20 +13,6 @@ import (
 	"github.com/charmbracelet/lipgloss"
 )
 
-type focusState int
-
-const (
-	focusInput focusState = iota
-	focusMessages
-)
-
-type editorTarget int
-
-const (
-	input editorTarget = iota
-	selectedMessage
-)
-
 // custom tea.Msg types
 type (
 	// sent on each chunk received from LLM
@@ -61,16 +47,38 @@ type (
 	msgMessageCloned *models.Message
 )
 
+type focusState int
+
+const (
+	focusInput focusState = iota
+	focusMessages
+)
+
+type editorTarget int
+
+const (
+	input editorTarget = iota
+	selectedMessage
+)
+
+type state int
+
+const (
+	idle state = iota
+	loading
+	pendingResponse
+)
+
 type Model struct {
 	shared.State
 	shared.Sections
 
 	// app state
+	state           state // current overall status of the view
 	conversation    *models.Conversation
 	rootMessages    []models.Message
 	messages        []models.Message
 	selectedMessage int
-	waitingForReply bool
 	editorTarget    editorTarget
 	stopSignal      chan struct{}
 	replyChan       chan models.Message
@@ -80,7 +88,6 @@ type Model struct {
 	// ui state
 	focus           focusState
 	wrap            bool     // whether message content is wrapped to viewport width
-	status          string   // a general status message
 	showToolResults bool     // whether tool calls and results are shown
 	messageCache    []string // cache of syntax highlighted and wrapped message content
 	messageOffsets  []int
@@ -101,6 +108,7 @@ func Chat(state shared.State) Model {
 	m := Model{
 		State: state,
 
+		state:        idle,
 		conversation: &models.Conversation{},
 		persistence:  true,
 
@@ -150,8 +158,6 @@ func Chat(state shared.State) Model {
 	m.input.FocusedStyle.Base = inputFocusedStyle
 	m.input.BlurredStyle.Base = inputBlurredStyle
 
-	m.waitingForReply = false
-	m.status = "Press ctrl+s to send"
 	return m
 }