fix(studio): surface complete workflow errors

frontend/src/adk/client.ts

@@ -1770,9 +1770,9 @@ export async function deployAgentkitProject(
     throw error;
   }
   if (!res.ok) {
-    const t = await res.text().catch(() => "");
+    const detail = await httpErrorMessage(res, "部署失败");
     clearController();
-    throw new Error(t || `部署失败 (${res.status})`);
+    throw new Error(detail);
   }
 
   let final: DeployFrame | null = null;

frontend/src/create/CustomCreate.tsx

@@ -1976,6 +1976,7 @@ function DebugComparisonWorkspace({
                           <DeploymentErrorMessage
                             message={variant.error}
                             className="cw-debug-error-detail"
+                            defaultExpanded
                           />
                         ) : starting ? (
                           <div className="cw-ab-empty cw-ab-starting">
@@ -2014,6 +2015,7 @@ function DebugComparisonWorkspace({
                                   <DeploymentErrorMessage
                                     message={message.error}
                                     className="cw-debug-msg-error"
+                                    defaultExpanded
                                   />
                                 ) : message.blocks && message.blocks.length > 0 ? (
                                   <Blocks blocks={message.blocks} onAction={() => {}} />
@@ -3273,9 +3275,10 @@ export function CustomCreate({
           : undefined}
       />
       {buildErr && (
-        <div className="cw-workspace-alert" role="alert">
-          {buildErr}
-        </div>
+        <DeploymentErrorMessage
+          className="cw-workspace-alert"
+          message={buildErr}
+        />
       )}
       <main className="cw-workspace-main" id="cw-workspace-main">
       {workspaceMode === "build" && (

frontend/src/ui/DeploymentErrorMessage.tsx

@@ -6,13 +6,15 @@ export function DeploymentErrorMessage({
   className = "",
   onRetry,
   retryLabel = "重试部署",
+  defaultExpanded = true,
 }: {
   message: string;
   className?: string;
   onRetry?: () => Promise<void>;
   retryLabel?: string;
+  defaultExpanded?: boolean;
 }) {
-  const [expanded, setExpanded] = useState(false);
+  const [expanded, setExpanded] = useState(defaultExpanded);
   const [copied, setCopied] = useState(false);
   const [retrying, setRetrying] = useState(false);
 
@@ -41,6 +43,7 @@ export function DeploymentErrorMessage({
       className={`deploy-error-message${expanded ? " is-expanded" : ""}${
         className ? ` ${className}` : ""
       }`}
+      role="alert"
     >
       <p className="deploy-error-message-text">{message}</p>
       <div className="deploy-error-message-actions">

frontend/tests/debugErrorPresentation.test.mjs

@@ -6,20 +6,91 @@ const source = readFileSync(
   new URL("../src/create/CustomCreate.tsx", import.meta.url),
   "utf8",
 );
+const errorComponentSource = readFileSync(
+  new URL("../src/ui/DeploymentErrorMessage.tsx", import.meta.url),
+  "utf8",
+);
+const clientSource = readFileSync(
+  new URL("../src/adk/client.ts", import.meta.url),
+  "utf8",
+);
+const projectPreviewSource = readFileSync(
+  new URL("../src/ui/ProjectPreview.tsx", import.meta.url),
+  "utf8",
+);
+const appSource = readFileSync(
+  new URL("../src/App.tsx", import.meta.url),
+  "utf8",
+);
 
-test("debug errors support full expansion, copying, and footer restart", () => {
+test("debug errors show the complete backend detail by default", () => {
   assert.match(
     source,
     /import \{ DeploymentErrorMessage \} from "\.\.\/ui\/DeploymentErrorMessage"/,
   );
-  assert.match(source, /className="cw-debug-error-detail"/);
-  assert.match(source, /className="cw-debug-msg-error"/);
+  assert.match(
+    source,
+    /message=\{variant\.error\}[\s\S]*?className="cw-debug-error-detail"[\s\S]*?defaultExpanded/,
+  );
+  assert.match(
+    source,
+    /message=\{message\.error\}[\s\S]*?className="cw-debug-msg-error"[\s\S]*?defaultExpanded/,
+  );
+  assert.match(errorComponentSource, /defaultExpanded = true/);
+  assert.match(errorComponentSource, /useState\(defaultExpanded\)/);
+  assert.match(errorComponentSource, /role="alert"/);
   assert.match(
     source,
     /className="cw-ab-start cw-ab-footer-start"[\s\S]*?onClick=\{\(\) => onStartVariant\(variant\.id\)\}/,
   );
 });
 
+test("creation and deployment keep friendly context and the original error", () => {
+  assert.match(
+    source,
+    /<DeploymentErrorMessage[\s\S]*?className="cw-workspace-alert"[\s\S]*?message=\{buildErr\}/,
+  );
+  assert.match(
+    source,
+    /setBuildErr\(error instanceof Error \? error\.message : String\(error\)\)/,
+  );
+  assert.match(
+    source,
+    /className="cw-ai-error-message"[\s\S]*?\{aiErrorDialog\}/,
+  );
+  assert.match(
+    clientSource,
+    /if \(!res\.ok\) \{[\s\S]*?httpErrorMessage\(res, "部署失败"\)[\s\S]*?throw new Error\(detail\)/,
+  );
+  assert.match(
+    projectPreviewSource,
+    /<DeploymentErrorMessage[\s\S]*?className="pp-error"[\s\S]*?\$\{deployError\}/,
+  );
+  assert.match(
+    appSource,
+    /<DeploymentErrorMessage[\s\S]*?className="global-deploy-error"[\s\S]*?message=\{task\.message\}/,
+  );
+});
+
+test("generated-agent debug requests preserve backend error details", () => {
+  assert.match(
+    clientSource,
+    /if \(typeof detail === "string"\) return detail/,
+  );
+  for (const fallback of [
+    "创建调试运行失败",
+    "创建调试会话失败",
+    "加载调试调用链路失败",
+    "调试运行失败",
+    "清理调试运行失败",
+  ]) {
+    assert.match(
+      clientSource,
+      new RegExp(`new Error\\(await httpErrorMessage\\(res, "${fallback}"\\)\\)`),
+    );
+  }
+});
+
 test("debug test runs are persisted and reclaimed after refresh", () => {
   assert.match(source, /const DEBUG_TEST_RUN_STORAGE_KEY = "veadk\.generatedAgentTestRuns"/);
   assert.match(source, /window\.sessionStorage\.getItem\(DEBUG_TEST_RUN_STORAGE_KEY\)/);

frontend/tests/markdownPromptEditor.test.mjs

@@ -271,7 +271,7 @@ test("container agents require child agents before debug or publish", () => {
   );
   assert.match(
     createSource,
-    /\{buildErr && \([\s\S]*?className="cw-workspace-alert" role="alert"[\s\S]*?\{buildErr\}/,
+    /\{buildErr && \([\s\S]*?<DeploymentErrorMessage[\s\S]*?className="cw-workspace-alert"[\s\S]*?message=\{buildErr\}/,
   );
   assert.doesNotMatch(
     createSource,