修复：服务详情接口浏览量自增异步任务导致SQLAlchemy会话状态冲突

- 根本原因：使用asyncio.create_task在后台执行db.commit()，主请求结束时调用db.close()导致会话状态冲突
- 错误：Method 'close()' can't be called here; method 'commit()' is already in progress
- 修复：改为同步执行浏览量自增和浏览历史记录，避免异步任务与会话生命周期冲突

app/api/routers/rbac_service_market.py

@@ -192,32 +192,29 @@ async def service_detail(
     item["gallery"] = _parse_json(item.get("gallery_json"), [])
     item["skus"] = _parse_json(item.get("skus_json"), [])
 
-    # 浏览量自增（异步，不阻塞响应）
-    import asyncio
-    async def _incr_view():
-        try:
-            await db.session.execute(
-                text("UPDATE opc_services SET view_count = view_count + 1 WHERE id = :id"),
-                {"id": service_id},
-            )
-            await db.session.commit()
-            # 记录浏览历史
-            await db.session.execute(
-                text("""INSERT INTO service_views (id, service_id, user_id, ip, user_agent, created_at)
-                        VALUES (:id, :service_id, :user_id, :ip, :ua, :now)"""),
-                {
-                    "id": _gen_id("sv_"),
-                    "service_id": service_id,
-                    "user_id": user.get("id", "") if user else "",
-                    "ip": "",
-                    "ua": "",
-                    "now": _now(),
-                },
-            )
-            await db.session.commit()
-        except Exception:
-            pass
-    asyncio.create_task(_incr_view())
+    # 浏览量自增（同步执行，避免异步任务导致会话状态冲突）
+    try:
+        await db.session.execute(
+            text("UPDATE opc_services SET view_count = view_count + 1 WHERE id = :id"),
+            {"id": service_id},
+        )
+        await db.session.commit()
+        # 记录浏览历史
+        await db.session.execute(
+            text("""INSERT INTO service_views (id, service_id, user_id, ip, user_agent, created_at)
+                    VALUES (:id, :service_id, :user_id, :ip, :ua, :now)"""),
+            {
+                "id": _gen_id("sv_"),
+                "service_id": service_id,
+                "user_id": user.get("id", "") if user else "",
+                "ip": "",
+                "ua": "",
+                "now": _now(),
+            },
+        )
+        await db.session.commit()
+    except Exception:
+        pass
 
     # 评价统计
     review_sql = """