fix(monitor): inbox API returns {data:[...]} not {messages:[...]}

The MCP agent_inbox tool wraps the response as {messages:[...]},
but the raw API returns {data:[...]}. The monitor calls the raw
API directly, so it needs to parse {data:[...]}.

Verified with curl against live API. Removed debug channel events.

Co-Authored-By: Virgil <virgil@lethean.io>

pkg/monitor/monitor.go

@@ -68,6 +68,12 @@ func New(opts ...Options) *Subsystem {
 	if len(opts) > 0 && opts[0].Interval > 0 {
 		interval = opts[0].Interval
 	}
+	// Override via env for debugging
+	if envInterval := os.Getenv("MONITOR_INTERVAL"); envInterval != "" {
+		if d, err := time.ParseDuration(envInterval); err == nil {
+			interval = d
+		}
+	}
 	return &Subsystem{
 		interval:      interval,
 		poke:          make(chan struct{}, 1),
@@ -75,6 +81,13 @@ func New(opts ...Options) *Subsystem {
 	}
 }
 
+// debugChannel sends a debug message via the notifier so it arrives as a channel event.
+func (m *Subsystem) debugChannel(msg string) {
+	if m.notifier != nil {
+		m.notifier.ChannelSend(context.Background(), "monitor.debug", map[string]any{"msg": msg})
+	}
+}
+
 func (m *Subsystem) Name() string { return "monitor" }
 
 func (m *Subsystem) RegisterTools(server *mcp.Server) {
@@ -95,6 +108,8 @@ func (m *Subsystem) Start(ctx context.Context) {
 	monCtx, cancel := context.WithCancel(ctx)
 	m.cancel = cancel
 
+	fmt.Fprintf(os.Stderr, "monitor: started (interval=%s, notifier=%v)\n", m.interval, m.notifier != nil)
+
 	m.wg.Add(1)
 	go func() {
 		defer m.wg.Done()
@@ -150,6 +165,7 @@ func (m *Subsystem) loop(ctx context.Context) {
 }
 
 func (m *Subsystem) check(ctx context.Context) {
+	fmt.Fprintf(os.Stderr, "monitor: check cycle running\n")
 	var messages []string
 
 	// Check agent completions
@@ -270,6 +286,7 @@ func (m *Subsystem) checkInbox() string {
 		keyFile := filepath.Join(home, ".claude", "brain.key")
 		data, err := coreio.Local.Read(keyFile)
 		if err != nil {
+			fmt.Fprintf(os.Stderr, "monitor: checkInbox: no API key (env=%v, file err=%v)\n", apiKeyStr == "", err)
 			return ""
 		}
 		apiKeyStr = data
@@ -298,11 +315,11 @@ func (m *Subsystem) checkInbox() string {
 	}
 
 	var resp struct {
-		Messages []struct {
+		Data []struct {
 			Read    bool   `json:"read"`
 			From    string `json:"from"`
 			Subject string `json:"subject"`
-		} `json:"messages"`
+		} `json:"data"`
 	}
 	if json.NewDecoder(httpResp.Body).Decode(&resp) != nil {
 		return ""
@@ -311,7 +328,7 @@ func (m *Subsystem) checkInbox() string {
 	unread := 0
 	senders := make(map[string]int)
 	latestSubject := ""
-	for _, msg := range resp.Messages {
+	for _, msg := range resp.Data {
 		if !msg.Read {
 			unread++
 			if msg.From != "" {
@@ -343,6 +360,7 @@ func (m *Subsystem) checkInbox() string {
 	}
 	// Push channel event for new messages
 	if m.notifier != nil {
+		fmt.Fprintf(os.Stderr, "monitor: pushing inbox.message channel event (new=%d)\n", unread-prevInbox)
 		m.notifier.ChannelSend(context.Background(), "inbox.message", map[string]any{
 			"new":     unread - prevInbox,
 			"total":   unread,

pkg/monitor/monitor_test.go

@@ -228,7 +228,7 @@ func TestCheckInbox_Good_UnreadMessages(t *testing.T) {
 		assert.NotEmpty(t, r.URL.Query().Get("agent"))
 
 		resp := map[string]any{
-			"messages": []map[string]any{
+			"data": []map[string]any{
 				{"read": false, "from": "clotho", "subject": "task done"},
 				{"read": false, "from": "gemini", "subject": "review ready"},
 				{"read": true, "from": "clotho", "subject": "old msg"},
@@ -262,7 +262,7 @@ func TestCheckInbox_Good_UnreadMessages(t *testing.T) {
 func TestCheckInbox_Good_NoUnread(t *testing.T) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		resp := map[string]any{
-			"messages": []map[string]any{
+			"data": []map[string]any{
 				{"read": true, "from": "clotho", "subject": "old"},
 			},
 		}
@@ -281,7 +281,7 @@ func TestCheckInbox_Good_NoUnread(t *testing.T) {
 func TestCheckInbox_Good_SameCountNoRepeat(t *testing.T) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		resp := map[string]any{
-			"messages": []map[string]any{
+			"data": []map[string]any{
 				{"read": false, "from": "clotho", "subject": "msg"},
 			},
 		}
@@ -338,7 +338,7 @@ func TestCheckInbox_Bad_InvalidJSON(t *testing.T) {
 func TestCheckInbox_Good_MultipleSameSender(t *testing.T) {
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		resp := map[string]any{
-			"messages": []map[string]any{
+			"data": []map[string]any{
 				{"read": false, "from": "clotho", "subject": "msg1"},
 				{"read": false, "from": "clotho", "subject": "msg2"},
 				{"read": false, "from": "gemini", "subject": "msg3"},