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 {

cmd/chub/main_test.go

@@ -248,6 +248,24 @@ func TestInstanceStatusRefresherAssociatesExternalWithoutLifecycleControl(t *tes
 	}
 }
 
+func TestInstanceTabsInspectorReadsOnlyVerifiedRuntimeRows(t *testing.T) {
+	remote := &fakeRemoteDebugInspector{targets: []browser.RemoteDebugTarget{{ID: "page-1", Type: "page", Title: "运营后台", URL: "https://example.com/orders"}}}
+	inspector := instanceTabsInspector{remoteDebug: remote}
+	targets, err := inspector.Inspect(context.Background(), ui.InstanceRow{ID: "chrome-a", Browser: "Chrome", Status: "运行中", RemoteDebugPort: 9666})
+	if err != nil || len(targets) != 1 || targets[0].ID != "page-1" || targets[0].URL != "https://example.com/orders" {
+		t.Fatalf("Inspect() = %#v, %v", targets, err)
+	}
+	if remote.targetCalls != 1 || remote.targetKind != domain.BrowserChrome || remote.targetPort != 9666 {
+		t.Fatalf("target inspector invocation = %#v", remote)
+	}
+	if _, err := inspector.Inspect(context.Background(), ui.InstanceRow{ID: "stopped", Browser: "Chrome", Status: "已退出", RemoteDebugPort: 9666}); err == nil {
+		t.Fatal("Inspect() accepted a non-running instance")
+	}
+	if remote.targetCalls != 1 {
+		t.Fatalf("non-running instance reached CDP target inspector %d times", remote.targetCalls)
+	}
+}
+
 type fakeExecutableResolver struct {
 	path       string
 	kind       domain.BrowserKind
@@ -371,6 +389,11 @@ type fakeRemoteDebugInspector struct {
 	port             int
 	allocatedPorts   []int
 	allocationStarts []int
+	targets          []browser.RemoteDebugTarget
+	targetErr        error
+	targetKind       domain.BrowserKind
+	targetPort       int
+	targetCalls      int
 }
 
 func (i *fakeRemoteDebugInspector) InspectRemoteDebugEndpoint(context.Context, domain.BrowserKind, string) (browser.RemoteDebugEndpoint, error) {
@@ -401,3 +424,10 @@ func (i *fakeRemoteDebugInspector) FindAvailableRemoteDebugPort(_ context.Contex
 	}
 	return start, nil
 }
+
+func (i *fakeRemoteDebugInspector) ListRemoteDebugTargets(_ context.Context, kind domain.BrowserKind, port int) ([]browser.RemoteDebugTarget, error) {
+	i.targetCalls++
+	i.targetKind = kind
+	i.targetPort = port
+	return append([]browser.RemoteDebugTarget(nil), i.targets...), i.targetErr
+}