feat(frontend): 移除万华相关元素并更新门户登录展示

统一清理前端万华相关文案与公司展示口径为滨化集团，移除登录与门户页角色选框，并同步更新全量页面截图及Word汇总文档。

Co-authored-by: Cursor <cursoragent@cursor.com>

front-end/src/app/pages/portal/TradingInfoPage.tsx

@@ -10,7 +10,7 @@ const NOTICE_DATA: Record<string, Notice[]> = {
   招标公告: [
     { title: "[公开招标] 扣电测试柜框架", date: "2026-07-13" },
     { title: "[公开招标] 2026年地脚螺栓、不锈钢及五金紧固件框架招标", date: "2026-07-13" },
-    { title: "[公开招标] 万华莱州100MW分散式风电项目EPC工程总承包[变更公告]", date: "2026-07-13" },
+    { title: "[公开招标] 莱州100MW分散式风电项目EPC工程总承包[变更公告]", date: "2026-07-13" },
     { title: "[公开招标] TPU掺混特种线项目FFS包装机[变更公告]", date: "2026-07-13" },
   ],
   资格预审公告: [
@@ -25,13 +25,13 @@ const NOTICE_DATA: Record<string, Notice[]> = {
   ],
   结果公告: [
     { title: "[公开招标] HDPE管道管件框架招标中标结果公告", date: "2026-07-07" },
-    { title: "[公开招标] 万华起重框架招标包一 单梁起重机中标结果公告", date: "2026-07-02" },
-    { title: "[公开招标] 万华海阳绿电直连光伏组件项目中标结果公告", date: "2026-06-30" },
+    { title: "[公开招标] 起重框架招标包一 单梁起重机中标结果公告", date: "2026-07-02" },
+    { title: "[公开招标] 海阳绿电直连光伏组件项目中标结果公告", date: "2026-06-30" },
   ],
   终止公告: [
     { title: "国标切断双偏心蝶阀框架招标废标公告", date: "2026-07-06" },
     { title: "TPU四期熟化料仓招标废标公告", date: "2026-07-01" },
-    { title: "万华滨州碳酸锂项目冷却窑废标公告", date: "2026-06-24" },
+    { title: "滨州碳酸锂项目冷却窑废标公告", date: "2026-06-24" },
   ],
 };