diff --git a/apps/ai-game-creator-shell/src/components/AppUpdateNotice.tsx b/apps/ai-game-creator-shell/src/components/AppUpdateNotice.tsx
index 2d09967e3..b7fe11562 100644
--- a/apps/ai-game-creator-shell/src/components/AppUpdateNotice.tsx
+++ b/apps/ai-game-creator-shell/src/components/AppUpdateNotice.tsx
@@ -158,7 +158,7 @@ export function AppUpdateNotice() {
               </>
             ) : (
               <>
-                <p>{downloadError || '下载更新失败，请稍后重试。'}</p>
+                <p>{downloadError || '下载更新失败：未提供具体错误正文。'}</p>
                 <div className="app-update-progress-actions">
                   <button type="button" onClick={() => void handleDownload()}>
                     重试
diff --git a/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx b/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
index 01c0df96e..482d0405f 100644
--- a/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
+++ b/apps/ai-game-creator-shell/src/components/game-distribution/GameDistributionPublishPanel.tsx
@@ -369,7 +369,7 @@ export function GameDistributionPublishPanel({
           setPublicationState('unavailable');
           setPublicationMessage(
             recovery.message?.trim() ||
-              '无法确认该项目的线上发布状态，请稍后重试',
+              '无法确认该项目的线上发布状态：未提供具体错误正文，请稍后重试',
           );
           return;
         }
@@ -395,7 +395,7 @@ export function GameDistributionPublishPanel({
         setPublicationMessage(
           recoveryError instanceof Error
             ? recoveryError.message
-            : '无法确认该项目的线上发布状态，请稍后重试',
+            : '无法确认该项目的线上发布状态：未提供具体错误正文，请稍后重试',
         );
       });
 
@@ -659,7 +659,8 @@ export function GameDistributionPublishPanel({
     }
     if (publicationState === 'unavailable') {
       setError(
-        publicationMessage || '无法确认该项目的线上发布状态，请稍后重试',
+        publicationMessage ||
+          '无法确认该项目的线上发布状态：未提供具体错误正文，请稍后重试',
       );
       return;
     }
@@ -835,7 +836,7 @@ export function GameDistributionPublishPanel({
               ) : (
                 <span>
                   {publicationMessage ||
-                    '无法确认该项目的线上发布状态，请稍后重试。'}
+                    '无法确认该项目的线上发布状态：未提供具体错误正文，请稍后重试。'}
                 </span>
               )}
               {publicationState === 'update' && publicationMessage ? (
diff --git a/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetGenerationQueue.ts b/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetGenerationQueue.ts
index 2840b589d..7b684d1e8 100644
--- a/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetGenerationQueue.ts
+++ b/apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetGenerationQueue.ts
@@ -324,7 +324,7 @@ export function createResourceCanvasAssetGenerationQueue(
       status: settlement.status,
       phaseDetail:
         settlement.record?.phaseDetail ??
-        `生成失败：${settlement.error ?? '未知原因'}`,
+        `生成失败：${settlement.error ?? '宿主未提供具体错误正文'}`,
       error: settlement.error,
       finishedAtMillis: settlement.record?.finishedAtMillis ?? nowMillis(),
     });
diff --git a/apps/ai-game-creator-shell/src/features/runtime-config/RuntimeConfigDialog.tsx b/apps/ai-game-creator-shell/src/features/runtime-config/RuntimeConfigDialog.tsx
index 8575f1243..24827fc80 100644
--- a/apps/ai-game-creator-shell/src/features/runtime-config/RuntimeConfigDialog.tsx
+++ b/apps/ai-game-creator-shell/src/features/runtime-config/RuntimeConfigDialog.tsx
@@ -1145,7 +1145,8 @@ export function RuntimeConfigDialog({
                     <div className="runtime-settings-empty-state" role="alert">
                       <strong>扩展列表加载失败</strong>
                       <span>
-                        {clientExtensionsStatus || '暂时无法读取扩展列表。'}
+                        {clientExtensionsStatus ||
+                          '扩展列表读取失败：未提供具体错误正文。'}
                       </span>
                     </div>
                   ) : clientExtensions.length > 0 ? (
diff --git a/apps/ai-game-creator-shell/src/view/project-development/index.tsx b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
index 03a7eb114..f13f6d657 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/index.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
@@ -8708,7 +8708,7 @@ export default function ProjectDevelopmentView({
           */
           resourceGenerationPlaceholdersRef.current.failTask(
             settlement.taskId,
-            settlement.error ?? '生成失败',
+            settlement.error ?? '生成失败：宿主未提供具体错误正文',
           );
           setResourceWorkbenchNotice('');
           setResourceGenerationDraft({
@@ -8749,10 +8749,10 @@ export default function ProjectDevelopmentView({
         // 受理之后才失败：占位保留（名称、位置与重试入口都还在），后台任务在账本里收口。
         resourceGenerationPlaceholdersRef.current.failTask(
           settlement.taskId,
-          settlement.error ?? '未知原因',
+          settlement.error ?? '宿主未提供具体错误正文',
         );
         setResourceWorkbenchNotice(
-          `生成素材失败：${settlement.error ?? '未知原因'}`,
+          `生成素材失败：${settlement.error ?? '宿主未提供具体错误正文'}`,
         );
         return;
       }
@@ -9013,7 +9013,7 @@ export default function ProjectDevelopmentView({
           setResourceWorkbenchNotice(
             error
               ? `生成任务列表读取失败：${projectDevelopmentErrorMessage(error)}`
-              : '生成任务列表读取失败，暂时无法恢复历史任务',
+              : '生成任务列表读取失败：未提供具体错误正文，暂时无法恢复历史任务',
           );
         }
       };
diff --git a/docs/project-memory/plans/【里程碑】AGC错误具体文本展示-2026-10-04.md b/docs/project-memory/plans/【里程碑】AGC错误具体文本展示-2026-10-04.md
index 35d261e1b..ed1cf6f8b 100644
--- a/docs/project-memory/plans/【里程碑】AGC错误具体文本展示-2026-10-04.md
+++ b/docs/project-memory/plans/【里程碑】AGC错误具体文本展示-2026-10-04.md
@@ -76,3 +76,4 @@ DirectProject 回合失败在确认不是客户端内部不可归类故障时，
 - 继续扫前端外围又发现 Direct 回合后的清单刷新、资源卡片预览未知错误、UI 编辑器单图预览读取失败仍会静默或使用无因固定句；现分别进入运行错误出口、保留脱敏后的预览错误正文并在编辑器状态提示中显示。
 - 资源依赖图读取失败原先只切到 fallback 布局状态，用户看不到 IPC/权限正文；现把安全错误保存到状态并在依赖画布内联显示。
 - 资源画布布局读写失败原先只把原因写日志、界面仍显示固定“布局失败”；现把脱敏后的 revision/IPC/权限/磁盘正文附到读取与保存提示，原有回退布局行为不变。
+- 又扫出发布状态、扩展列表、应用更新和生成任务的“无正文时固定句”分支；这些分支现在明确显示“未提供具体错误正文”，不再让空原因伪装成完整错误。