更新

server/app/adminapi/controller/tcm/DiagnosisController.php

@@ -969,7 +969,8 @@ class DiagnosisController extends BaseAdminController
                 $profile = (string) $metadata['model_key'];
                 $emit = $this->openAssistantSse();
                 $sseStartedAt = hrtime(true);
-                $started = $emit('start', $metadata + ['request_id' => $requestId, 'message' => '已连接，正在整理资料']);
+                $started = $emit('start', $metadata + ['request_id' => $requestId,
+                    'trace_id' => $timing->id(), 'message' => '已连接，正在整理资料']);
                 $timing->log('sse_start', ['status' => $started ? 'ok' : 'disconnected']);
                 return true;
             },

server/app/adminapi/logic/tcm/DiagnosisAiLogic.php

@@ -533,6 +533,13 @@ class DiagnosisAiLogic extends BaseLogic
         $retryMs = 0;
         $status = 'error';
         $upstreamStartedAt = hrtime(true);
+        if ($timing !== null) {
+            $priorObserver = $options['on_upstream_timing'] ?? null;
+            $options['on_upstream_timing'] = static function (\app\common\service\DifyStreamTiming $stages) use ($timing, $priorObserver): void {
+                $timing->logUpstream($stages);
+                if (is_callable($priorObserver)) $priorObserver($stages);
+            };
+        }
         $forwardDelta = static function (string $delta) use (&$deliveredDelta, &$deltaCount, &$deltaBytes, $onDelta) {
             $accepted = $onDelta($delta);
             if ($accepted !== false) {

server/app/adminapi/service/AssistantSseTiming.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace app\adminapi\service;
 
+use app\common\service\DifyStreamTiming;
 use think\facade\Log;
 
 /** A request-local, patient-free timing record for the diagnosis assistant SSE path. */
@@ -91,4 +92,15 @@ final class AssistantSseTiming
             // Telemetry must never interrupt the clinical request.
         }
     }
+
+    /** The typed collector exposes only bounded numeric timing and enum metadata. */
+    public function logUpstream(DifyStreamTiming $upstream): void
+    {
+        try {
+            Log::write('diagnosis ai upstream stages ' . json_encode([
+                'trace_id' => $this->traceId, 'request_elapsed_ms' => self::elapsedMs($this->startedAt),
+                'timing' => $upstream->snapshot(),
+            ]), 'info');
+        } catch (\Throwable $ignored) {}
+    }
 }