fix(prompt): replay selected Cursor commands

Include client-resolved command content in model-visible user history so slash commands such as /init retain their actual instructions.

internal/backend/agent/prompt/replay.go

@@ -26,10 +26,13 @@ func BuildUserMessageReplayMessage(userMessage *agentv1.UserMessage) (Message, b
 
 func buildUserReplayMessage(text string, selectedContext *agentv1.SelectedContext) (Message, bool) {
 	images := buildSelectedImageContentParts(selectedContext)
-	sections := make([]string, 0, 4)
+	sections := make([]string, 0, 5)
 	if text != "" {
 		sections = append(sections, formatMessageText(fmt.Sprintf("<user_query>\n%s\n</user_query>", text)))
 	}
+	if cursorCommands := buildSelectedCursorCommandsPromptSection(selectedContext); cursorCommands != "" {
+		sections = append(sections, cursorCommands)
+	}
 	if ideState := buildSelectedIDEStatePromptSection(selectedContext); ideState != "" {
 		sections = append(sections, ideState)
 	}
@@ -62,6 +65,32 @@ func buildUserReplayMessage(text string, selectedContext *agentv1.SelectedContex
 	}, true
 }
 
+func buildSelectedCursorCommandsPromptSection(selectedContext *agentv1.SelectedContext) string {
+	if selectedContext == nil || len(selectedContext.GetCursorCommands()) == 0 {
+		return ""
+	}
+	entries := make([]string, 0, len(selectedContext.GetCursorCommands()))
+	for _, command := range selectedContext.GetCursorCommands() {
+		if command == nil {
+			continue
+		}
+		content := strings.TrimSpace(command.GetContent())
+		if content == "" {
+			continue
+		}
+		name := strings.TrimSpace(command.GetName())
+		if name == "" {
+			entries = append(entries, "<cursor_command>\n"+content+"\n</cursor_command>")
+			continue
+		}
+		entries = append(entries, fmt.Sprintf("<cursor_command name=\"%s\">\n%s\n</cursor_command>", escapePromptXML(name), content))
+	}
+	if len(entries) == 0 {
+		return ""
+	}
+	return "<cursor_commands>\n" + strings.Join(entries, "\n\n") + "\n</cursor_commands>"
+}
+
 func buildSelectedIDEStatePromptSection(selectedContext *agentv1.SelectedContext) string {
 	if selectedContext == nil || selectedContext.GetInvocationContext() == nil {
 		return ""

internal/backend/agent/prompt/replay_test.go

@@ -2,9 +2,67 @@ package promptengine
 
 import (
 	"reflect"
+	"strings"
 	"testing"
+
+	"cursor/gen/agentv1"
 )
 
+func TestBuildUserMessageReplayMessageIncludesSelectedCursorCommands(t *testing.T) {
+	message, ok := BuildUserMessageReplayMessage(&agentv1.UserMessage{
+		Text: "/init",
+		SelectedContext: &agentv1.SelectedContext{
+			CursorCommands: []*agentv1.SelectedCursorCommand{
+				{Name: "init", Content: "Analyze the repository and create AGENTS.md."},
+				{Name: `review"<&`, Content: "Review the implementation."},
+			},
+		},
+	})
+	if !ok {
+		t.Fatal("BuildUserMessageReplayMessage() returned ok=false")
+	}
+
+	want := strings.Join([]string{
+		"<user_query>\n/init\n</user_query>",
+		"<cursor_commands>\n" +
+			"<cursor_command name=\"init\">\nAnalyze the repository and create AGENTS.md.\n</cursor_command>\n\n" +
+			"<cursor_command name=\"review&quot;&lt;&amp;\">\nReview the implementation.\n</cursor_command>\n" +
+			"</cursor_commands>",
+	}, "\n\n")
+	if message.Role != "user" || message.Content != want {
+		t.Fatalf("message = %#v, want content %q", message, want)
+	}
+}
+
+func TestBuildUserMessageReplayMessageSkipsEmptyCursorCommandsAndKeepsOrder(t *testing.T) {
+	message, ok := BuildUserMessageReplayMessage(&agentv1.UserMessage{
+		Text: "run commands",
+		SelectedContext: &agentv1.SelectedContext{
+			CursorCommands: []*agentv1.SelectedCursorCommand{
+				nil,
+				{Name: "empty", Content: "  "},
+				{Content: "First command."},
+				{Name: "second", Content: "Second command."},
+			},
+		},
+	})
+	if !ok {
+		t.Fatal("BuildUserMessageReplayMessage() returned ok=false")
+	}
+
+	first := strings.Index(message.Content, "First command.")
+	second := strings.Index(message.Content, "Second command.")
+	if first < 0 || second < 0 || first >= second {
+		t.Fatalf("cursor command order was not preserved: %q", message.Content)
+	}
+	if strings.Contains(message.Content, "empty") {
+		t.Fatalf("empty cursor command was not skipped: %q", message.Content)
+	}
+	if !strings.Contains(message.Content, "<cursor_command>\nFirst command.\n</cursor_command>") {
+		t.Fatalf("unnamed cursor command was not rendered safely: %q", message.Content)
+	}
+}
+
 func TestBuildReplayMessagesFromPendingAssistantOutputsKeepsTextAndToolCallInOneAssistantTurn(t *testing.T) {
 	raw := `{
 		"id":"1",