diff --git a/client/src/services/debugEmlService.ts b/client/src/services/debugEmlService.ts
index ddf3e63..a58d214 100644
--- a/client/src/services/debugEmlService.ts
+++ b/client/src/services/debugEmlService.ts
@@ -13,6 +13,8 @@ import { isAuthSessionInvalidPayload, notifyUnauthorized } from '@/services/http
 const apiBaseUrl = import.meta.env.VITE_API_BASE_URL ?? ''
 const debugEmlEndpoint = '/api/system/debug/eml-superagent-runs'
 const debugEmlStreamEndpoint = `${debugEmlEndpoint}/stream`
+const streamFallbackPollIntervalMs = 2_000
+const streamFallbackPollTimeoutMs = 30 * 60 * 1_000
 const jsonSecretPattern =
   /("(?:api[_-]?key|token|secret|password|cookie|authorization)"\s*:\s*")[^"]*(")/gi
 const headerSecretPattern = /((?:authorization|cookie)\s*:\s*)[^\s,;]+/gi
@@ -99,42 +101,120 @@ export async function uploadDebugEmlSuperAgentRunStream(
 
   let finalResult: DebugEmlSuperAgentRunResult | null = null
   let streamError: DebugEmlUploadError | null = null
-  await readSseStream(response.body, (event) => {
-    const payload = parseSsePayload(event.data)
-    if (event.event === 'debug_stage') {
-      handlers.onStage?.(normalizeStageEvent(payload))
-      return
-    }
-    if (event.event === 'superagent_trace') {
-      handlers.onTrace?.(normalizeTraceEvent(payload))
-      return
-    }
-    if (event.event === 'debug_heartbeat') {
-      return
-    }
-    if (event.event === 'superagent_result') {
-      finalResult = normalizeDebugEmlResult(payload)
-      handlers.onResult?.(finalResult)
-      return
-    }
-    if (event.event === 'debug_error') {
-      const errorPayload = isDebugEmlErrorResponse(payload) ? payload : {}
-      streamError = new DebugEmlUploadError(
-        errorPayload.message || 'Debug EML 调试失败。',
-        response.status,
-        errorPayload.error_code || 'DEBUG_EML_RUN_FAILED',
-        payload,
-      )
-    }
-  })
+  let fallbackDebugRunId: string | null = null
+  let streamReadError: unknown = null
+  try {
+    await readSseStream(response.body, (event) => {
+      const payload = parseSsePayload(event.data)
+      if (event.event === 'debug_stage') {
+        const stage = normalizeStageEvent(payload)
+        fallbackDebugRunId = stage.debug_run_id ?? fallbackDebugRunId
+        handlers.onStage?.(stage)
+        return
+      }
+      if (event.event === 'superagent_trace') {
+        handlers.onTrace?.(normalizeTraceEvent(payload))
+        return
+      }
+      if (event.event === 'debug_heartbeat') {
+        const heartbeat = normalizeStageEvent(payload)
+        fallbackDebugRunId = heartbeat.debug_run_id ?? fallbackDebugRunId
+        return
+      }
+      if (event.event === 'superagent_result') {
+        finalResult = normalizeDebugEmlResult(payload)
+        fallbackDebugRunId = finalResult.debug_run_id || fallbackDebugRunId
+        handlers.onResult?.(finalResult)
+        return
+      }
+      if (event.event === 'debug_error') {
+        const errorPayload = isDebugEmlErrorResponse(payload) ? payload : {}
+        streamError = new DebugEmlUploadError(
+          errorPayload.message || 'Debug EML 调试失败。',
+          response.status,
+          errorPayload.error_code || 'DEBUG_EML_RUN_FAILED',
+          payload,
+        )
+      }
+    })
+  } catch (error) {
+    streamReadError = error
+  }
 
   if (streamError) {
     throw streamError
   }
-  if (!finalResult) {
-    throw new DebugEmlUploadError('Debug EML SSE 未收到最终结果。', response.status, 'DEBUG_EML_RUN_FAILED', null)
+  if (finalResult) {
+    return finalResult
   }
-  return finalResult
+  if (fallbackDebugRunId) {
+    return pollDebugEmlSuperAgentRun(input.debugUploadKey, fallbackDebugRunId)
+  }
+  if (streamReadError) {
+    throw new DebugEmlUploadError('Debug EML SSE 读取失败。', response.status, 'DEBUG_EML_RUN_FAILED', null)
+  }
+  throw new DebugEmlUploadError('Debug EML SSE 未收到最终结果。', response.status, 'DEBUG_EML_RUN_FAILED', null)
+}
+
+async function getDebugEmlSuperAgentRun(
+  debugUploadKey: string,
+  debugRunId: string,
+): Promise<DebugEmlSuperAgentRunResult> {
+  const response = await fetch(`${apiBaseUrl}${debugEmlEndpoint}/${encodeURIComponent(debugRunId)}`, {
+    method: 'GET',
+    headers: buildUploadHeaders(debugUploadKey),
+  })
+  const payload = await readResponsePayload(response)
+  if (!response.ok) {
+    if (isAuthSessionInvalidPayload(payload)) {
+      notifyUnauthorized()
+    }
+    const errorPayload = isDebugEmlErrorResponse(payload) ? payload : {}
+    throw new DebugEmlUploadError(
+      errorPayload.message || `Request failed with status ${response.status}`,
+      response.status,
+      errorPayload.error_code || 'DEBUG_EML_RUN_FAILED',
+      payload,
+    )
+  }
+  return normalizeDebugEmlResult(payload)
+}
+
+async function pollDebugEmlSuperAgentRun(
+  debugUploadKey: string,
+  debugRunId: string,
+): Promise<DebugEmlSuperAgentRunResult> {
+  const deadline = Date.now() + streamFallbackPollTimeoutMs
+  let latestResult: DebugEmlSuperAgentRunResult | null = null
+  while (Date.now() <= deadline) {
+    latestResult = await getDebugEmlSuperAgentRun(debugUploadKey, debugRunId)
+    if (latestResult.status === 'SUPERAGENT_SUCCEEDED') {
+      return latestResult
+    }
+    if (latestResult.status === 'SUPERAGENT_FAILED' || latestResult.status === 'FAILED') {
+      throw new DebugEmlUploadError(
+        latestResult.safe_error_summary || 'Debug EML 调试失败。',
+        200,
+        latestResult.status === 'SUPERAGENT_FAILED'
+          ? 'SUPERAGENT_OPEN_API_FAILED'
+          : 'DEBUG_EML_RUN_FAILED',
+        latestResult,
+      )
+    }
+    await delay(streamFallbackPollIntervalMs)
+  }
+  throw new DebugEmlUploadError(
+    latestResult?.safe_error_summary || 'Debug EML SSE 未收到最终结果。',
+    200,
+    'DEBUG_EML_RUN_FAILED',
+    latestResult,
+  )
+}
+
+function delay(ms: number): Promise<void> {
+  return new Promise((resolve) => {
+    window.setTimeout(resolve, ms)
+  })
 }
 
 function buildUploadForm(input: DebugEmlUploadInput): FormData {
@@ -202,6 +282,7 @@ function normalizeDebugEmlResult(payload: unknown): DebugEmlSuperAgentRunResult
       : [],
     warnings: Array.isArray(result.warnings) ? result.warnings.filter(isString) : [],
     status: nullableStringValue(result.status),
+    safe_error_summary: nullableStringValue(result.safe_error_summary),
   }
 }
 
diff --git a/client/src/tests/debugEmlService.spec.ts b/client/src/tests/debugEmlService.spec.ts
index 26e2057..0d99946 100644
--- a/client/src/tests/debugEmlService.spec.ts
+++ b/client/src/tests/debugEmlService.spec.ts
@@ -41,6 +41,27 @@ function mockSseResponse(chunks: string[], status = 200): Response {
   })
 }
 
+function mockErroredSseResponse(chunksBeforeError: string[], error: Error, status = 200): Response {
+  const encoder = new TextEncoder()
+  let nextChunkIndex = 0
+  const stream = new ReadableStream<Uint8Array>({
+    pull(controller) {
+      if (nextChunkIndex < chunksBeforeError.length) {
+        controller.enqueue(encoder.encode(chunksBeforeError[nextChunkIndex]))
+        nextChunkIndex += 1
+        return
+      }
+      controller.error(error)
+    },
+  })
+  return new Response(stream, {
+    status,
+    headers: {
+      'Content-Type': 'text/event-stream',
+    },
+  })
+}
+
 describe('debugEmlService', () => {
   beforeEach(() => {
     vi.restoreAllMocks()
@@ -275,4 +296,86 @@ describe('debugEmlService', () => {
       message: 'SuperAgent 调用失败。',
     } satisfies Partial<DebugEmlUploadError>)
   })
+
+  it('polls backend run status when SSE closes before final result', async () => {
+    const fetchMock = vi.spyOn(globalThis, 'fetch')
+    fetchMock.mockResolvedValueOnce(
+      mockSseResponse([
+        'event: debug_stage\n',
+        'data: {"debug_run_id":"90005","status":"CALLING_SUPERAGENT","safe_summary":"阶段：调用 SuperAgent Open API。"}\n\n',
+      ]),
+    )
+    fetchMock.mockResolvedValueOnce(
+      mockJsonResponse({
+        debug_run_id: '90005',
+        source_message_id: '30005',
+        uploaded_media: [],
+        superagent_session_id: 'session-poll-1',
+        superagent_run_id: 'run-poll-1',
+        superagent_raw_answer: '{"route_code":"S10"}',
+        superagent_parsed_json: { route_code: 'S10' },
+        superagent_trace_events: [],
+        warnings: [],
+        status: 'SUPERAGENT_SUCCEEDED',
+      }),
+    )
+    const file = new File(['From: guest@example.test'], 'booking.eml', { type: 'message/rfc822' })
+
+    const result = await uploadDebugEmlSuperAgentRunStream({
+      hotelId: 'HOTEL-TEST',
+      debugUploadKey: 'manual-debug-key',
+      file,
+    })
+
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+    expect(fetchMock.mock.calls[1]?.[0]).toBe('/api/system/debug/eml-superagent-runs/90005')
+    expect(fetchMock.mock.calls[1]?.[1]).toMatchObject({
+      method: 'GET',
+      headers: {
+        Accept: 'application/json',
+        'X-TH-Hotel-Debug-Upload-Key': 'manual-debug-key',
+      },
+    })
+    expect(result.superagent_run_id).toBe('run-poll-1')
+    expect(result.superagent_parsed_json).toEqual({ route_code: 'S10' })
+  })
+
+  it('polls backend run status when SSE stream errors after sending debug run id', async () => {
+    const fetchMock = vi.spyOn(globalThis, 'fetch')
+    fetchMock.mockResolvedValueOnce(
+      mockErroredSseResponse(
+        [
+          'event: debug_stage\n',
+          'data: {"debug_run_id":"90006","status":"CALLING_SUPERAGENT","safe_summary":"阶段：调用 SuperAgent Open API。"}\n\n',
+        ],
+        new Error('stream reset by proxy'),
+      ),
+    )
+    fetchMock.mockResolvedValueOnce(
+      mockJsonResponse({
+        debug_run_id: '90006',
+        source_message_id: '30006',
+        uploaded_media: [],
+        superagent_session_id: 'session-poll-error-1',
+        superagent_run_id: 'run-poll-error-1',
+        superagent_raw_answer: '{"route_code":"S10"}',
+        superagent_parsed_json: { route_code: 'S10' },
+        superagent_trace_events: [],
+        warnings: [],
+        status: 'SUPERAGENT_SUCCEEDED',
+      }),
+    )
+    const file = new File(['From: guest@example.test'], 'booking.eml', { type: 'message/rfc822' })
+
+    const result = await uploadDebugEmlSuperAgentRunStream({
+      hotelId: 'HOTEL-TEST',
+      debugUploadKey: 'manual-debug-key',
+      file,
+    })
+
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+    expect(fetchMock.mock.calls[1]?.[0]).toBe('/api/system/debug/eml-superagent-runs/90006')
+    expect(result.superagent_run_id).toBe('run-poll-error-1')
+    expect(result.superagent_parsed_json).toEqual({ route_code: 'S10' })
+  })
 })
diff --git a/client/src/tests/debugEmlView.spec.ts b/client/src/tests/debugEmlView.spec.ts
index 9ce4f4e..de91dd0 100644
--- a/client/src/tests/debugEmlView.spec.ts
+++ b/client/src/tests/debugEmlView.spec.ts
@@ -83,6 +83,7 @@ function createResult() {
     ],
     warnings: ['SuperAgent 返回非 JSON 时会展示原始回答'],
     status: 'SUPERAGENT_SUCCEEDED',
+    safe_error_summary: null,
   }
 }
 
diff --git a/client/src/types/debugEml.ts b/client/src/types/debugEml.ts
index 92e4ecb..342fea1 100644
--- a/client/src/types/debugEml.ts
+++ b/client/src/types/debugEml.ts
@@ -38,6 +38,7 @@ export interface DebugEmlSuperAgentRunResult {
   superagent_trace_events: DebugEmlSuperAgentTraceEvent[]
   warnings: string[]
   status: string | null
+  safe_error_summary: string | null
 }
 
 export interface DebugEmlSuperAgentTraceEvent {
diff --git a/docs/project/frontend-backend/debug-eml-page-integration-guide.md b/docs/project/frontend-backend/debug-eml-page-integration-guide.md
index c2c422d..b772a8c 100644
--- a/docs/project/frontend-backend/debug-eml-page-integration-guide.md
+++ b/docs/project/frontend-backend/debug-eml-page-integration-guide.md
@@ -22,7 +22,8 @@ Debug EML 页面第一版只做一件事：
 - 不调用 SuperAgent 任务结果通知接口。
 - 不触发 AgentBus 实时链路。
 - 不做批量上传。
-- 不提供 Debug run 历史列表或详情查询。
+- 不提供 Debug run 历史列表。
+- 仅提供按 `debug_run_id` 查询单次运行状态和安全结果，用于 SSE 断流后的前端兜底轮询。
 - 不在生产普通业务页面开放。
 
 ## 3. 页面建议结构
@@ -40,6 +41,17 @@ Debug EML 页面第一版只做一件事：
 
 ## 4. 接口
 
+实时 Trace 页面优先使用流式接口：
+
+```text
+POST /api/system/debug/eml-superagent-runs/stream
+Content-Type: multipart/form-data
+Accept: text/event-stream
+Header: X-TH-Hotel-Debug-Upload-Key: <调试上传口令>
+```
+
+同步调试接口仍保留：
+
 ```text
 POST /api/system/debug/eml-superagent-runs
 Content-Type: multipart/form-data
@@ -47,6 +59,16 @@ Accept: application/json
 Header: X-TH-Hotel-Debug-Upload-Key: <调试上传口令>
 ```
 
+SSE 断流兜底查询接口：
+
+```text
+GET /api/system/debug/eml-superagent-runs/{debug_run_id}
+Accept: application/json
+Header: X-TH-Hotel-Debug-Upload-Key: <调试上传口令>
+```
+
+中文说明：前端不直接调用 SuperAgent。上传后如果 SSE 已收到 `debug_run_id`，但浏览器或反向代理提前关闭了流，前端可以用同一个 Debug 上传口令轮询该 GET 接口，直到状态变成 `SUPERAGENT_SUCCEEDED`、`SUPERAGENT_FAILED` 或 `FAILED`。该接口不是历史列表接口，也不允许绕过 Debug 上传口令。
+
 注意：
 
 - 该接口只有在后端 `debug.eml-upload.enabled=true` 时存在；如果后端未开启，前端可能收到 `404`。
@@ -229,7 +251,8 @@ idle
 - 文件未选择或 Debug 上传口令为空时禁用提交按钮；`hotel_id` 为空是允许的，表示使用后端系统酒店。
 - 提交后禁用文件选择和提交按钮，避免重复上传。
 - SuperAgent 调用可能耗时较长，页面 loading 文案不要只写“上传中”，建议写“正在解析邮件并等待 SuperAgent 返回”。
-- 成功后保留本次响应在页面内存中；当前没有 Debug run 查询接口，刷新页面后需要重新上传。
+- 成功后保留本次响应在页面内存中；当前没有 Debug run 历史列表，刷新页面后通常需要重新上传或手动使用已知 `debug_run_id` 排查。
+- 如果 SSE 正常返回 `superagent_result`，以前端收到的最终结果为准；如果 SSE 在最终结果前关闭但已经收到 `debug_run_id`，前端应轮询 GET 兜底接口。
 - 再次上传同一封 `.eml` 会生成新的 `external_message_id` 和新的 SourceMessage，前端不要按原始 `Message-ID` 去重。
 
 ## 8. 安全与日志
@@ -268,8 +291,8 @@ idle
 
 ## 11. 当前后置事项
 
-- Debug run 历史列表 / 详情查询接口未做。
-- Debug run 取消或超时轮询接口未做。
+- Debug run 历史列表未做。
+- Debug run 取消接口未做。
 - 批量上传未做。
 - 前端白名单元数据独立接口未做。
 - 用户身份 / 权限体系未接入；当前依赖调试上传口令保护。
diff --git a/docs/project/go-live-notes.md b/docs/project/go-live-notes.md
index 49c2c24..d293957 100644
--- a/docs/project/go-live-notes.md
+++ b/docs/project/go-live-notes.md
@@ -158,6 +158,7 @@
 | `DEBUG_EML_UPLOAD_PROD_ACCESS_KEY` | 是 | prod Debug EML 上传访问口令；生产通常不应启用该接口。 |
 | `DEBUG_EML_UPLOAD_MAX_FILE_BYTES` | 否 | `.eml` 上传大小上限，默认 `10485760`。 |
 | `DEBUG_EML_UPLOAD_SSE_HEARTBEAT_INTERVAL` | 否 | Debug EML 页面到后端的 SSE 心跳间隔，默认 `15s`；测试机如仍遇到空闲断流可调小到 `10s`。 |
+| `DEBUG_EML_UPLOAD_SSE_REQUEST_TIMEOUT` | 否 | Spring MVC 异步请求总超时，默认 `1800s`；当前用于保障 Debug EML SSE 不先于 SuperAgent read timeout 关闭。注意 Spring MVC async timeout 是应用级全局设置，后续如增加其他 async/SSE 接口需一起评估。 |
 | `DEERFLOW_DEV_BASE_URL` / `DEERFLOW_TEST_BASE_URL` / `DEERFLOW_PROD_BASE_URL` | 否 | SuperAgent / DeerFlow Open API 基础地址，未配置时可兜底 `DEERFLOW_BASE_URL`。 |
 | `DEERFLOW_DEV_OPEN_API_KEY` / `DEERFLOW_TEST_OPEN_API_KEY` / `DEERFLOW_PROD_OPEN_API_KEY` | 是 | SuperAgent Open API Key，未配置时可兜底 `DEERFLOW_OPEN_API_KEY`。 |
 | `SUPERAGENT_DEV_OPEN_API_ENABLED` / `SUPERAGENT_TEST_OPEN_API_ENABLED` / `SUPERAGENT_PROD_OPEN_API_ENABLED` | 否 | 是否启用真实 SuperAgent Open API 调用；prod 默认关闭。 |
diff --git a/docs/project/requirements/M004-debug-eml-superagent-upload-v1.md b/docs/project/requirements/M004-debug-eml-superagent-upload-v1.md
index aca9b4f..3d6269d 100644
--- a/docs/project/requirements/M004-debug-eml-superagent-upload-v1.md
+++ b/docs/project/requirements/M004-debug-eml-superagent-upload-v1.md
@@ -426,6 +426,7 @@ DEBUG_EML_UPLOAD_ENABLED=true
 DEBUG_EML_UPLOAD_ACCESS_KEY=
 DEBUG_EML_UPLOAD_MAX_FILE_BYTES=10485760
 DEBUG_EML_UPLOAD_SSE_HEARTBEAT_INTERVAL=15s
+DEBUG_EML_UPLOAD_SSE_REQUEST_TIMEOUT=1800s
 
 ALIYUN_OSS_ENDPOINT=
 ALIYUN_OSS_BUCKET=
@@ -441,6 +442,12 @@ SUPERAGENT_DEBUG_EML_CONNECT_TIMEOUT=15s
 SUPERAGENT_DEBUG_EML_READ_TIMEOUT=180s
 ```
 
+中文说明：
+
+- `DEBUG_EML_UPLOAD_SSE_HEARTBEAT_INTERVAL` 控制 Debug EML SSE 在等待 SuperAgent Open API 返回期间的心跳事件间隔，用于避免中间链路按空闲连接断开。
+- `DEBUG_EML_UPLOAD_SSE_REQUEST_TIMEOUT` 目前映射到 Spring MVC async request timeout。Spring MVC 对 `StreamingResponseBody` 使用全局异步超时，因此该变量虽然为 Debug EML 设置，但会影响同一 Spring MVC 应用内其他异步请求；如后续增加其他 SSE / async 接口，需要统一评估该全局值。
+- 前端实时页面优先调用 `POST /api/system/debug/eml-superagent-runs/stream`。如果 SSE 在最终 `superagent_result` 前断开但已收到 `debug_run_id`，前端可通过 `GET /api/system/debug/eml-superagent-runs/{debug_run_id}` 轮询运行状态和安全结果；该 GET 接口不是历史列表接口，仍必须携带 `X-TH-Hotel-Debug-Upload-Key`。
+
 分环境建议：
 
 - dev 可以默认关闭真实 SuperAgent 调用，但允许配置后开启。
diff --git a/server/src/main/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParser.java b/server/src/main/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParser.java
index d148c87..d892b63 100644
--- a/server/src/main/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParser.java
+++ b/server/src/main/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParser.java
@@ -93,16 +93,16 @@ public class SuperAgentOpenApiSseParser {
      * 汇总解析状态并生成结果对象。
      */
     private SuperAgentOpenApiResult buildResult(String sessionId, Set<String> eventTypes, ParsedState state) {
-        if (!state.endSeen) {
-            throw new SuperAgentOpenApiException("SuperAgent SSE 未收到结束事件。");
-        }
-        if ((state.rawAnswer == null || state.rawAnswer.isBlank()) && state.fallbackRawAnswer != null) {
+        if ((state.rawAnswer == null || state.rawAnswer.isBlank()) && state.endSeen && state.fallbackRawAnswer != null) {
             state.rawAnswer = state.fallbackRawAnswer;
             state.modelName = state.fallbackModelName;
             state.inputTokens = state.fallbackInputTokens;
             state.outputTokens = state.fallbackOutputTokens;
             state.totalTokens = state.fallbackTotalTokens;
         }
+        if (!state.endSeen && (state.rawAnswer == null || state.rawAnswer.isBlank())) {
+            throw new SuperAgentOpenApiException("SuperAgent SSE 未收到结束事件。");
+        }
         if (state.rawAnswer == null || state.rawAnswer.isBlank()) {
             throw new SuperAgentOpenApiException("SuperAgent SSE 未找到最终 AI 回答。");
         }
diff --git a/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/dto/DebugEmlSuperAgentRunSnapshot.java b/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/dto/DebugEmlSuperAgentRunSnapshot.java
index 1396a9b..f1927d9 100644
--- a/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/dto/DebugEmlSuperAgentRunSnapshot.java
+++ b/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/dto/DebugEmlSuperAgentRunSnapshot.java
@@ -9,13 +9,49 @@ import java.time.LocalDateTime;
  * @param hotelId 酒店或业务上下文 ID
  * @param runStatus 当前运行状态
  * @param sourceMessageId 关联的内部 SourceMessage ID
+ * @param externalMessageId Debug 外部邮件 ID
+ * @param externalConversationId Debug 外部会话 ID
+ * @param originalFileName 原始 EML 安全文件名
+ * @param originalEmlOssUrl 原始 EML OSS URL
+ * @param originalEmlSha256 原始 EML SHA-256
+ * @param payloadJson 发送给 SuperAgent 的 AgentBus-like payload
+ * @param superagentSessionId SuperAgent session ID
+ * @param superagentRunId SuperAgent run ID
+ * @param superagentProfileId SuperAgent profile ID
+ * @param superagentProfileVersionId SuperAgent profile version ID
+ * @param superagentModelName SuperAgent 模型名称
+ * @param superagentRawAnswer SuperAgent 最终原始回答
+ * @param superagentParsedJson 后端解析出的 SuperAgent JSON 文本
+ * @param superagentInputTokens SuperAgent 输入 token 数
+ * @param superagentOutputTokens SuperAgent 输出 token 数
+ * @param superagentTotalTokens SuperAgent 总 token 数
+ * @param safeErrorSummary 安全错误摘要
  * @param createdAt 创建 UTC 时间
+ * @param updatedAt 更新 UTC 时间
  */
 public record DebugEmlSuperAgentRunSnapshot(
         Long id,
         String hotelId,
         String runStatus,
         Long sourceMessageId,
-        LocalDateTime createdAt
+        String externalMessageId,
+        String externalConversationId,
+        String originalFileName,
+        String originalEmlOssUrl,
+        String originalEmlSha256,
+        String payloadJson,
+        String superagentSessionId,
+        String superagentRunId,
+        String superagentProfileId,
+        String superagentProfileVersionId,
+        String superagentModelName,
+        String superagentRawAnswer,
+        String superagentParsedJson,
+        Integer superagentInputTokens,
+        Integer superagentOutputTokens,
+        Integer superagentTotalTokens,
+        String safeErrorSummary,
+        LocalDateTime createdAt,
+        LocalDateTime updatedAt
 ) {
 }
diff --git a/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/result/DebugEmlSuperAgentRunResult.java b/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/result/DebugEmlSuperAgentRunResult.java
index ef5b28e..1b21c94 100644
--- a/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/result/DebugEmlSuperAgentRunResult.java
+++ b/server/src/main/java/cn/nianxx/thhotel/platform/debug/common/result/DebugEmlSuperAgentRunResult.java
@@ -29,6 +29,7 @@ import java.util.Map;
  * @param superagentTraceEvents SuperAgent 公开 Trace 事件列表
  * @param warnings 可展示的安全警告
  * @param status Debug 运行状态
+ * @param safeErrorSummary 安全错误摘要，成功时为空；不包含 Secret、邮件正文或附件签名 URL
  */
 public record DebugEmlSuperAgentRunResult(
         @JsonProperty("debug_run_id")
@@ -68,6 +69,8 @@ public record DebugEmlSuperAgentRunResult(
         @JsonProperty("superagent_trace_events")
         List<SuperAgentOpenApiTraceEvent> superagentTraceEvents,
         List<String> warnings,
-        String status
+        String status,
+        @JsonProperty("safe_error_summary")
+        String safeErrorSummary
 ) {
 }
diff --git a/server/src/main/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentController.java b/server/src/main/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentController.java
index adcc625..bde801b 100644
--- a/server/src/main/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentController.java
+++ b/server/src/main/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentController.java
@@ -7,6 +7,8 @@ import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -44,6 +46,16 @@ public class DebugEmlSuperAgentController {
         return ResponseEntity.status(HttpStatus.CREATED).body(runService.uploadAndRun(accessKey, file, hotelId, runLabel));
     }
 
+    /**
+     * 查询 Debug EML 运行结果，用于流式响应提前结束后的前端兜底轮询。
+     */
+    @GetMapping(path = "/{runId}", produces = MediaType.APPLICATION_JSON_VALUE)
+    public DebugEmlSuperAgentRunResult getRun(
+            @RequestHeader(name = "X-TH-Hotel-Debug-Upload-Key", required = false) String accessKey,
+            @PathVariable String runId) {
+        return runService.getRun(accessKey, runId);
+    }
+
     /**
      * 上传单封 .eml 邮件并以 SSE 实时返回本系统阶段、SuperAgent 公开 Trace 和最终回答。
      */
diff --git a/server/src/main/java/cn/nianxx/thhotel/platform/debug/repository/MybatisDebugEmlSuperAgentRunRepository.java b/server/src/main/java/cn/nianxx/thhotel/platform/debug/repository/MybatisDebugEmlSuperAgentRunRepository.java
index e013e11..bfdad6d 100644
--- a/server/src/main/java/cn/nianxx/thhotel/platform/debug/repository/MybatisDebugEmlSuperAgentRunRepository.java
+++ b/server/src/main/java/cn/nianxx/thhotel/platform/debug/repository/MybatisDebugEmlSuperAgentRunRepository.java
@@ -100,6 +100,24 @@ public class MybatisDebugEmlSuperAgentRunRepository implements DebugEmlSuperAgen
                 entity.getHotelId(),
                 entity.getRunStatus(),
                 entity.getSourceMessageId(),
-                entity.getCreatedAt());
+                entity.getExternalMessageId(),
+                entity.getExternalConversationId(),
+                entity.getOriginalFileName(),
+                entity.getOriginalEmlOssUrl(),
+                entity.getOriginalEmlSha256(),
+                entity.getPayloadJson(),
+                entity.getSuperagentSessionId(),
+                entity.getSuperagentRunId(),
+                entity.getSuperagentProfileId(),
+                entity.getSuperagentProfileVersionId(),
+                entity.getSuperagentModelName(),
+                entity.getSuperagentRawAnswer(),
+                entity.getSuperagentParsedJson(),
+                entity.getSuperagentInputTokens(),
+                entity.getSuperagentOutputTokens(),
+                entity.getSuperagentTotalTokens(),
+                entity.getSafeErrorSummary(),
+                entity.getCreatedAt(),
+                entity.getUpdatedAt());
     }
 }
diff --git a/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/DebugEmlSuperAgentRunService.java b/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/DebugEmlSuperAgentRunService.java
index 3bf44b9..0f5e6f5 100644
--- a/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/DebugEmlSuperAgentRunService.java
+++ b/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/DebugEmlSuperAgentRunService.java
@@ -23,6 +23,11 @@ public interface DebugEmlSuperAgentRunService {
             String hotelId,
             String runLabel);
 
+    /**
+     * 查询 Debug EML 运行安全结果，用于流式响应被中间链路提前关闭后的前端兜底轮询。
+     */
+    DebugEmlSuperAgentRunResult getRun(String accessKey, String runId);
+
     /**
      * 上传并处理单封 EML，按 text/event-stream 实时写出内部阶段、SuperAgent Trace 和最终结果。
      */
diff --git a/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/impl/DebugEmlSuperAgentRunServiceImpl.java b/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/impl/DebugEmlSuperAgentRunServiceImpl.java
index e52e4e2..3c4af3c 100644
--- a/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/impl/DebugEmlSuperAgentRunServiceImpl.java
+++ b/server/src/main/java/cn/nianxx/thhotel/platform/debug/service/impl/DebugEmlSuperAgentRunServiceImpl.java
@@ -12,6 +12,7 @@ import cn.nianxx.thhotel.integrations.storage.aliyunoss.service.impl.AliyunOssPr
 import cn.nianxx.thhotel.integrations.storage.aliyunoss.service.impl.ObjectStorageException;
 import cn.nianxx.thhotel.platform.common.enums.SourceMessageOnlyResultCode;
 import cn.nianxx.thhotel.platform.debug.common.dto.DebugEmlSuperAgentRunDraft;
+import cn.nianxx.thhotel.platform.debug.common.dto.DebugEmlSuperAgentRunSnapshot;
 import cn.nianxx.thhotel.platform.debug.common.dto.DebugEmlSuperAgentRunStatusUpdate;
 import cn.nianxx.thhotel.platform.debug.common.dto.DebugEmlSuperAgentRunUpdate;
 import cn.nianxx.thhotel.platform.debug.common.enums.DebugEmlSuperAgentRunStatus;
@@ -23,15 +24,19 @@ import cn.nianxx.thhotel.platform.hotel.service.HotelContextService;
 import cn.nianxx.thhotel.platform.hotel.service.HotelContextException;
 import cn.nianxx.thhotel.platform.message.common.dto.ParsedEmlMediaItem;
 import cn.nianxx.thhotel.platform.message.common.dto.ParsedEmlMessage;
+import cn.nianxx.thhotel.platform.message.common.dto.SourceMessageOriginalContent;
+import cn.nianxx.thhotel.platform.message.common.dto.SourceMessageOriginalMediaItem;
 import cn.nianxx.thhotel.platform.message.common.enums.SourceMessageMediaType;
 import cn.nianxx.thhotel.platform.message.common.request.CaptureSourceMessageCommand;
 import cn.nianxx.thhotel.platform.message.common.request.CaptureSourceMessageMedia;
 import cn.nianxx.thhotel.platform.message.common.result.SourceMessageCaptureResult;
+import cn.nianxx.thhotel.platform.message.repository.SourceMessageInboxRepository;
 import cn.nianxx.thhotel.platform.message.service.EmlMessageParseService;
 import cn.nianxx.thhotel.platform.message.service.SourceMessageCaptureService;
 import cn.nianxx.thhotel.platform.message.service.SourceMessageHtmlSanitizerService;
 import cn.nianxx.thhotel.platform.message.service.impl.EmlMessageParseException;
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ObjectNode;
@@ -97,6 +102,7 @@ public class DebugEmlSuperAgentRunServiceImpl implements DebugEmlSuperAgentRunSe
     private final EmlMessageParseService parseService;
     private final ObjectStorageService objectStorageService;
     private final SourceMessageCaptureService sourceMessageCaptureService;
+    private final SourceMessageInboxRepository sourceMessageInboxRepository;
     private final SourceMessageHtmlSanitizerService htmlSanitizerService;
     private final SuperAgentOpenApiClient superAgentOpenApiClient;
     private final DebugEmlSuperAgentRunRepository runRepository;
@@ -112,6 +118,7 @@ public class DebugEmlSuperAgentRunServiceImpl implements DebugEmlSuperAgentRunSe
             EmlMessageParseService parseService,
             ObjectStorageService objectStorageService,
             SourceMessageCaptureService sourceMessageCaptureService,
+            SourceMessageInboxRepository sourceMessageInboxRepository,
             SourceMessageHtmlSanitizerService htmlSanitizerService,
             SuperAgentOpenApiClient superAgentOpenApiClient,
             DebugEmlSuperAgentRunRepository runRepository,
@@ -122,6 +129,7 @@ public class DebugEmlSuperAgentRunServiceImpl implements DebugEmlSuperAgentRunSe
         this.parseService = parseService;
         this.objectStorageService = objectStorageService;
         this.sourceMessageCaptureService = sourceMessageCaptureService;
+        this.sourceMessageInboxRepository = sourceMessageInboxRepository;
         this.htmlSanitizerService = htmlSanitizerService;
         this.superAgentOpenApiClient = superAgentOpenApiClient;
         this.runRepository = runRepository;
@@ -199,6 +207,21 @@ public class DebugEmlSuperAgentRunServiceImpl implements DebugEmlSuperAgentRunSe
         }
     }
 
+    /**
+     * 查询 Debug EML 运行安全结果。用于前端 SSE 被中间链路提前关闭后按 runId 兜底轮询。
+     */
+    @Override
+    public DebugEmlSuperAgentRunResult getRun(String accessKey, String runId) {
+        validateAccessKey(accessKey);
+        Long parsedRunId = parseRunId(runId);
+        DebugEmlSuperAgentRunSnapshot snapshot = runRepository.findById(parsedRunId)
+                .orElseThrow(() -> new DebugEmlSuperAgentException(
+                        HttpStatus.NOT_FOUND,
+                        "DEBUG_EML_RUN_NOT_FOUND",
+                        "Debug EML 运行记录不存在。"));
+        return toRunResult(snapshot);
+    }
+
     /**
      * 处理单封 Debug EML 上传，并实时输出安全的调试 SSE 事件。
      */
@@ -571,7 +594,131 @@ public class DebugEmlSuperAgentRunServiceImpl implements DebugEmlSuperAgentRunSe
                 parsedJson,
                 traceEvents,
                 List.copyOf(warnings),
-                status.name());
+                status.name(),
+                null);
+    }
+
+    /**
+     * 将持久化快照转换为 Debug 页面可安全展示的查询结果。
+     */
+    private DebugEmlSuperAgentRunResult toRunResult(DebugEmlSuperAgentRunSnapshot snapshot) {
+        SourceMessageOriginalContent originalContent = loadOriginalContent(snapshot.sourceMessageId());
+        String htmlBodyWithOssUrls = originalContent == null ? null : originalContent.htmlBody();
+        String htmlBodySanitized = htmlBodyWithOssUrls == null ? null : htmlSanitizerService.sanitizeHtml(htmlBodyWithOssUrls);
+        return new DebugEmlSuperAgentRunResult(
+                snapshot.id().toString(),
+                snapshot.sourceMessageId() == null ? null : snapshot.sourceMessageId().toString(),
+                snapshot.sourceMessageId() == null ? null : SOURCE_PROVIDER,
+                snapshot.externalMessageId(),
+                snapshot.externalConversationId(),
+                snapshot.originalEmlOssUrl(),
+                snapshot.originalEmlSha256(),
+                originalContent == null ? List.of() : debugMediaResults(originalContent.mediaItems()),
+                htmlBodyWithOssUrls,
+                htmlBodySanitized,
+                originalContent == null ? null : true,
+                originalContent == null ? null : htmlSanitizerService.htmlRenderMode(htmlBodyWithOssUrls),
+                parsePayloadJson(snapshot.payloadJson()),
+                snapshot.superagentSessionId(),
+                snapshot.superagentRunId(),
+                snapshot.superagentRawAnswer(),
+                parseJsonNode(snapshot.superagentParsedJson()),
+                List.of(),
+                List.of(),
+                snapshot.runStatus(),
+                snapshot.safeErrorSummary());
+    }
+
+    /**
+     * 读取 Debug run 关联 SourceMessage 的受控原文快照；缺失时返回 null，查询接口仍返回运行状态。
+     */
+    private SourceMessageOriginalContent loadOriginalContent(Long sourceMessageId) {
+        if (sourceMessageId == null) {
+            return null;
+        }
+        return sourceMessageInboxRepository.findOriginalContent(sourceMessageId).orElse(null);
+    }
+
+    /**
+     * 将 SourceMessage 媒体快照转换为 Debug 响应媒体项。
+     */
+    private List<DebugEmlUploadedMediaResult> debugMediaResults(List<SourceMessageOriginalMediaItem> mediaItems) {
+        if (mediaItems == null || mediaItems.isEmpty()) {
+            return List.of();
+        }
+        return mediaItems.stream()
+                .map(item -> new DebugEmlUploadedMediaResult(
+                        item.mediaType(),
+                        item.fileName(),
+                        item.contentType(),
+                        item.sizeBytes(),
+                        item.externalUrl(),
+                        item.externalMediaId(),
+                        objectKeyFromPublicUrl(item.externalUrl())))
+                .toList();
+    }
+
+    /**
+     * 尽量从公开 URL 还原 OSS object key；无法可靠还原时返回 null，不影响前端调试展示。
+     */
+    private String objectKeyFromPublicUrl(String externalUrl) {
+        String normalizedUrl = trimToNull(externalUrl);
+        String publicBaseUrl = trimTrailingSlash(trimToNull(ossProperties.getPublicBaseUrl()));
+        if (normalizedUrl == null || publicBaseUrl == null || !normalizedUrl.startsWith(publicBaseUrl + "/")) {
+            return null;
+        }
+        String encodedObjectKey = normalizedUrl.substring(publicBaseUrl.length() + 1);
+        return URLDecoder.decode(encodedObjectKey, StandardCharsets.UTF_8);
+    }
+
+    /**
+     * 解析查询路径中的 Debug runId。
+     */
+    private Long parseRunId(String runId) {
+        String normalizedRunId = trimToNull(runId);
+        if (normalizedRunId == null) {
+            throw new DebugEmlSuperAgentException(HttpStatus.BAD_REQUEST, "REQUEST_FIELD_REQUIRED", "debug_run_id 不能为空。");
+        }
+        try {
+            return Long.valueOf(normalizedRunId);
+        } catch (NumberFormatException exception) {
+            throw new DebugEmlSuperAgentException(HttpStatus.BAD_REQUEST, "REQUEST_FIELD_INVALID", "debug_run_id 格式错误。");
+        }
+    }
+
+    /**
+     * 解析已入库的 payload JSON；解析失败返回 null，避免查询接口抛出内部异常。
+     */
+    private Map<String, Object> parsePayloadJson(String payloadJson) {
+        String normalizedPayload = trimToNull(payloadJson);
+        if (normalizedPayload == null) {
+            return null;
+        }
+        try {
+            JsonNode jsonNode = objectMapper.readTree(normalizedPayload);
+            if (jsonNode == null || !jsonNode.isObject()) {
+                return null;
+            }
+            return objectMapper.convertValue(jsonNode, new TypeReference<>() {
+            });
+        } catch (Exception exception) {
+            return null;
+        }
+    }
+
+    /**
+     * 解析已入库的 SuperAgent JSON；解析失败返回 null，前端仍可查看 raw answer。
+     */
+    private JsonNode parseJsonNode(String jsonText) {
+        String normalizedJson = trimToNull(jsonText);
+        if (normalizedJson == null) {
+            return null;
+        }
+        try {
+            return objectMapper.readTree(normalizedJson);
+        } catch (Exception exception) {
+            return null;
+        }
     }
 
     /**
@@ -1135,6 +1282,20 @@ public class DebugEmlSuperAgentRunServiceImpl implements DebugEmlSuperAgentRunSe
         return trimmed.isEmpty() ? null : trimmed;
     }
 
+    /**
+     * 去掉 URL 末尾斜杠，便于用公开基础 URL 还原对象路径。
+     */
+    private String trimTrailingSlash(String value) {
+        if (value == null) {
+            return null;
+        }
+        String trimmed = value;
+        while (trimmed.endsWith("/")) {
+            trimmed = trimmed.substring(0, trimmed.length() - 1);
+        }
+        return trimmed;
+    }
+
     /**
      * 截断安全摘要，避免超过数据库限制。
      */
diff --git a/server/src/main/resources/application.yml b/server/src/main/resources/application.yml
index aa0262f..cc96fb6 100644
--- a/server/src/main/resources/application.yml
+++ b/server/src/main/resources/application.yml
@@ -11,6 +11,10 @@ spring:
       # multipart 需要高于 Debug EML 业务文件上限，避免超限文件在进入 Controller 前被框架直接 413 拦截。
       max-file-size: ${DEBUG_EML_UPLOAD_MULTIPART_MAX_FILE_BYTES:20971520}
       max-request-size: ${DEBUG_EML_UPLOAD_MULTIPART_MAX_REQUEST_BYTES:${DEBUG_EML_UPLOAD_MAX_REQUEST_BYTES:25165824}}
+  mvc:
+    async:
+      # Spring MVC async timeout 是应用级全局值；当前主要用于避免 Debug EML SSE 先于 SuperAgent 调试调用关闭。
+      request-timeout: ${DEBUG_EML_UPLOAD_SSE_REQUEST_TIMEOUT:${SPRING_MVC_ASYNC_REQUEST_TIMEOUT:1800s}}
 
 mybatis-plus:
   configuration:
diff --git a/server/src/test/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParserTest.java b/server/src/test/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParserTest.java
index d833e1e..5bba1f9 100644
--- a/server/src/test/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParserTest.java
+++ b/server/src/test/java/cn/nianxx/thhotel/integrations/ai/superagent/service/impl/SuperAgentOpenApiSseParserTest.java
@@ -89,16 +89,30 @@ class SuperAgentOpenApiSseParserTest {
     }
 
     @Test
-    void shouldFailWhenEndEventMissingEvenIfAiContentExists() {
+    void shouldFailWhenEndEventMissingAndOnlyPartialAiContentExists() {
+        String sse = """
+                event: messages
+                data: {"type":"ai","content":"partial answer"}
+
+                """;
+
+        assertThatThrownBy(() -> parser.parse("session-debug-partial", sse))
+                .isInstanceOf(SuperAgentOpenApiException.class)
+                .hasMessageContaining("SuperAgent SSE 未收到结束事件。");
+    }
+
+    @Test
+    void shouldAcceptMissingEndEventWhenFinalAiContentExists() {
         String sse = """
                 event: messages
                 data: {"type":"ai","content":"{\\"ai_task_results\\":[]}","response_metadata":{"finish_reason":"stop"}}
 
                 """;
 
-        assertThatThrownBy(() -> parser.parse("session-debug-004", sse))
-                .isInstanceOf(SuperAgentOpenApiException.class)
-                .hasMessageContaining("SuperAgent SSE 未收到结束事件。");
+        SuperAgentOpenApiResult result = parser.parse("session-debug-004", sse);
+
+        assertThat(result.rawAnswer()).isEqualTo("{\"ai_task_results\":[]}");
+        assertThat(result.eventTypes()).containsExactly("messages");
     }
 
     @Test
diff --git a/server/src/test/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentControllerTest.java b/server/src/test/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentControllerTest.java
index 1df5003..511281c 100644
--- a/server/src/test/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentControllerTest.java
+++ b/server/src/test/java/cn/nianxx/thhotel/platform/debug/control/DebugEmlSuperAgentControllerTest.java
@@ -8,6 +8,7 @@ import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.when;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.asyncDispatch;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
@@ -186,6 +187,44 @@ class DebugEmlSuperAgentControllerTest {
         org.assertj.core.api.Assertions.assertThat(debugRunCount).isEqualTo(1L);
     }
 
+    @Test
+    void shouldQueryDebugRunResultByIdForStreamFallback() throws Exception {
+        mockStorageAndSuperAgentSuccess();
+
+        mockMvc.perform(multipart(ENDPOINT)
+                        .file(emlFile())
+                        .param("hotel_id", "HOTEL-TEST")
+                        .param("run_label", "query-run-fallback")
+                        .header("X-TH-Hotel-Debug-Upload-Key", "test-debug-upload-key"))
+                .andExpect(status().isCreated());
+
+        Long runId = jdbcTemplate.queryForObject("""
+                SELECT id
+                FROM platform_debug_eml_superagent_run
+                WHERE run_label = 'query-run-fallback'
+                """, Long.class);
+
+        mockMvc.perform(get(ENDPOINT + "/" + runId)
+                        .header("X-TH-Hotel-Debug-Upload-Key", "test-debug-upload-key"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.debug_run_id").value(runId.toString()))
+                .andExpect(jsonPath("$.source_message_id").isNotEmpty())
+                .andExpect(jsonPath("$.source_provider").value("DEBUG_EML_UPLOAD"))
+                .andExpect(jsonPath("$.uploaded_media", hasSize(greaterThanOrEqualTo(3))))
+                .andExpect(jsonPath("$.html_body_with_oss_urls", containsString("https://oss.example.test/")))
+                .andExpect(jsonPath("$.html_body_with_oss_urls", not(containsString("cid:inline-001"))))
+                .andExpect(jsonPath("$.html_body_sanitized", containsString("https://oss.example.test/")))
+                .andExpect(jsonPath("$.html_sanitize_required").value(true))
+                .andExpect(jsonPath("$.html_render_mode").value("SANITIZED_HTML"))
+                .andExpect(jsonPath("$.superagent_session_id").value("session-debug-001"))
+                .andExpect(jsonPath("$.superagent_run_id").value("run-debug-001"))
+                .andExpect(jsonPath("$.superagent_raw_answer", containsString("ai_task_results")))
+                .andExpect(jsonPath("$.superagent_parsed_json.ai_task_results[0].task_type").value("New Booking"))
+                .andExpect(jsonPath("$.status").value("SUPERAGENT_SUCCEEDED"))
+                .andExpect(jsonPath("$.safe_error_summary").doesNotExist())
+                .andExpect(content().string(not(containsString("test-debug-upload-key"))));
+    }
+
     @Test
     void shouldStreamDebugStagesSuperAgentTraceAndFinalResult() throws Exception {
         when(objectStorageService.putObject(any())).thenAnswer(invocation -> {