feat: add read-only CDP target viewing

cmd/chub/main.go

@@ -130,6 +130,7 @@ func runWindow(logger *slog.Logger) {
 		externalProfiles: externalProfiles,
 		remoteDebug:      cdp,
 	}.Refresh, window.Invalidate)
+	shell.OnInspectTabs(instanceTabsInspector{remoteDebug: cdp}.Inspect, window.Invalidate)
 	shell.OnPathSearch(func(ctx context.Context, field ui.PathField, current string) (string, error) {
 		switch field {
 		case ui.PathChromeExecutable:
@@ -362,6 +363,37 @@ type instanceStatusRefresher struct {
 	remoteDebug      browser.RemoteDebugEndpointInspector
 }
 
+// instanceTabsInspector is a read-only adapter. It accepts only a UI row that
+// already has a verified runtime port and maps platform targets into UI DTOs.
+type instanceTabsInspector struct {
+	remoteDebug browser.RemoteDebugTargetInspector
+}
+
+func (i instanceTabsInspector) Inspect(ctx context.Context, row ui.InstanceRow) ([]ui.CDPTarget, error) {
+	if i.remoteDebug == nil {
+		return nil, errors.New("CDP 页面目标服务尚未准备好")
+	}
+	if row.Status != "运行中" && row.Status != "外部已关联" {
+		return nil, errors.New("实例需要处于已验证的运行或外部关联状态")
+	}
+	if !domain.ValidRemoteDebugPort(row.RemoteDebugPort) {
+		return nil, errors.New("实例没有可验证的本地调试端口")
+	}
+	kind, err := browserKind(row.Browser)
+	if err != nil {
+		return nil, err
+	}
+	targets, err := i.remoteDebug.ListRemoteDebugTargets(ctx, kind, row.RemoteDebugPort)
+	if err != nil {
+		return nil, fmt.Errorf("读取 CDP 页面目标失败：%w", err)
+	}
+	result := make([]ui.CDPTarget, 0, len(targets))
+	for _, target := range targets {
+		result = append(result, ui.CDPTarget{ID: target.ID, Type: target.Type, Title: target.Title, URL: target.URL})
+	}
+	return result, nil
+}
+
 func (s instanceStatusRefresher) Refresh(ctx context.Context, rows []ui.InstanceRow) ([]ui.InstanceRefreshResult, error) {
 	results := make([]ui.InstanceRefreshResult, 0, len(rows))
 	for _, row := range rows {