Fixes to message/conversation handling in tui chat view

This set of changes fixes root/child message cycling and ensures all
database operations happen within a `tea.Cmd`

pkg/tui/views/chat/chat.go

@@ -36,13 +36,29 @@ type (
 	// a special case of common.MsgError that stops the response waiting animation
 	msgResponseError error
 	// sent on each completed reply
-	msgAssistantReply models.Message
+	msgResponse models.Message
 	// sent when a conversation is (re)loaded
-	msgConversationLoaded *models.Conversation
-	// sent when a new conversation title is set
-	msgConversationTitleChanged string
+	msgConversationLoaded struct {
+		conversation *models.Conversation
+		rootMessages []models.Message
+	}
+	// sent when a new conversation title generated
+	msgConversationTitleGenerated string
 	// sent when a conversation's messages are laoded
 	msgMessagesLoaded []models.Message
+	// sent when the conversation has been persisted, triggers a reload of contents
+	msgConversationPersisted struct {
+		conversation *models.Conversation
+		messages     []models.Message
+	}
+	// sent when the given message is made the new selected reply of its parent
+	msgSelectedReplyCycled *models.Message
+	// sent when the given message is made the new selected root of the current conversation
+	msgSelectedRootCycled *models.Message
+	// sent when a message's contents are updated and saved
+	msgMessageUpdated *models.Message
+	// sent when a message is cloned, with the cloned message
+	msgMessageCloned *models.Message
 )
 
 type Model struct {
@@ -141,7 +157,7 @@ func Chat(state shared.State) Model {
 
 func (m Model) Init() tea.Cmd {
 	return tea.Batch(
-		m.waitForChunk(),
-		m.waitForReply(),
+		m.waitForResponseChunk(),
+		m.waitForResponse(),
 	)
 }