feat: fix opencode message box parsing (#137)

Co-authored-by: Cian Johnston <public@cianjohnston.ie>

Author: 35C4n0r

chat/bun.lock

@@ -1,5 +1,6 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "chat",

lib/httpapi/server.go

@@ -326,6 +326,7 @@ func (s *Server) StartSnapshotLoop(ctx context.Context) {
 
 			// Send initial prompt when agent becomes stable for the first time
 			if !s.conversation.InitialPromptSent && convertStatus(currentStatus) == AgentStatusStable {
+
 				if err := s.conversation.SendMessage(FormatMessage(s.agentType, s.conversation.InitialPrompt)...); err != nil {
 					s.logger.Error("Failed to send initial prompt", "error", err)
 				} else {

lib/msgfmt/message_box.go

@@ -70,8 +70,8 @@ func removeOpencodeMessageBox(msg string) string {
 	//  ┃                                                                      ┃
 	// We only check for the first ┃ and then an empty line above it - as sometimes the full input block does not load within a snapshot,
 	// this leads to displaying a bunch of newlines.
-	for i := len(lines) - 1; i >= 1; i-- {
-		if strings.TrimSpace(lines[i-1]) == "" &&
+	for i := len(lines) - 1; i >= 2; i-- {
+		if strings.ReplaceAll(lines[i-2], " ", "") != "┃┃" &&
 			strings.ReplaceAll(lines[i], " ", "") == "┃┃" {
 			lines = lines[:i-1]
 			break

lib/msgfmt/testdata/format/opencode/partial_render/expected.txt

@@ -0,0 +1,12 @@
+                    █▀▀█ █▀▀█ █▀▀ █▀▀▄ █▀▀ █▀▀█ █▀▀▄ █▀▀
+                    █░░█ █░░█ █▀▀ █░░█ █░░ █░░█ █░░█ █▀▀
+                    ▀▀▀▀ █▀▀▀ ▀▀▀ ▀  ▀ ▀▀▀ ▀▀▀▀ ▀▀▀  ▀▀▀
+                                                  v0.6.8
+
+                     /new      new session     ctrl+x n
+                     /help     show help       ctrl+x h
+                     /share    share session   ctrl+x s
+                     /models   list models     ctrl+x m
+
+
+                    Grok Code is free for a limited time