feat: 全模块公司隔离 + crossDomain权限码动态跨域控制

- get_current_company_filter: 新增_has_cross_domain_permission, 权限码替代硬编码
- 补全11个Service的get_current_company_filter调用(semi/product/service/outbound/bom/trans/scrap/summary)
- base/search修复: search_material此前无隔离, 已补全
- get_current_company_filter兜底: JWT缺company_name时返回__NO_COMPANY__防止放行
- permission.py: _get_operator_company补全返回值, 修复权限页保存逻辑
- 新增crossDomain迁移脚本, element_type=element挂system_mgmt下

inventory-backend/app/services/inbound/product_service.py

@@ -1,6 +1,7 @@
 # app/services/inbound/product_service.py
 from app.extensions import db
 from app.models.base import MaterialBase
+from app.utils.decorators import get_current_company_filter
 from app.models.inbound.buy import StockBuy
 from app.models.inbound.semi import StockSemi
 from app.models.outbound import TransOutbound
@@ -363,6 +364,13 @@ class ProductInboundService:
             if material_type and material_type.strip():
                 query = query.filter(MaterialBase.material_type == material_type.strip())
 
+            # ============================================================
+            # 【行级数据隔离】基于 JWT 多租户公司过滤
+            # ============================================================
+            company_limit = get_current_company_filter()
+            if company_limit is not None:
+                query = query.filter(MaterialBase.company_name == company_limit)
+
             # ============================================================
             # 【全局特权】基于 JWT 与 global:cross_company_op 的跨组织隔离
             # ============================================================