feat(bat-api): 实现内嵌 dashboard

Closes #46

internal/backendrpc/client_test.go

@@ -434,9 +434,14 @@ func TestTranslationTaskUpdateSendsWorkerParams(t *testing.T) {
 			t.Fatalf("decode params: %v", err)
 		}
 		if params.TaskID != "textunit/v-current/Scenario" ||
-			params.Status != "failed" ||
-			params.FailureReason != "provider rejected payload" ||
-			params.ProviderRunID != "provider-run-1" {
+			params.Status != "completed" ||
+			params.FailureReason != "" ||
+			params.ProviderRunID != "provider-run-1" ||
+			params.Provider != "manual" ||
+			len(params.TranslationResults) != 1 ||
+			params.TranslationResults[0].UnitID != "direct:a#unit:0" ||
+			params.TranslationResults[0].SourceText != "source" ||
+			params.TranslationResults[0].TranslatedText != "译文" {
 			t.Fatalf("params = %#v", params)
 		}
 		return testResponse{
@@ -444,16 +449,21 @@ func TestTranslationTaskUpdateSendsWorkerParams(t *testing.T) {
 				OK:        true,
 				Status:    "ok",
 				RequestID: "req-test-translation-update",
-				Data:      map[string]any{"task_status": "failed"},
+				Data:      map[string]any{"task_status": "completed"},
 			},
 		}
 	})
 
 	raw, err := client.TranslationTaskUpdate(context.Background(), TranslationTaskUpdateParams{
 		TaskID:        "textunit/v-current/Scenario",
-		Status:        "failed",
-		FailureReason: "provider rejected payload",
+		Status:        "completed",
 		ProviderRunID: "provider-run-1",
+		Provider:      "manual",
+		TranslationResults: []TranslationTaskUnitResultParam{{
+			UnitID:         "direct:a#unit:0",
+			SourceText:     "source",
+			TranslatedText: "译文",
+		}},
 	})
 	if err != nil {
 		t.Fatalf("TranslationTaskUpdate error: %v", err)