refactor: 简化工作台上手入口和个人设置（portal-onboarding-profile-simplification）

.trellis/spec/hyb-oa/frontend-react-vite-design.md

@@ -236,6 +236,33 @@ and admin tools available without dominating the default path.
   asserting the task surface, primary action and secondary/advanced entry
   behavior.
 
+## Convention: Workbench Onboarding And Profile Scope
+
+**What**: PC workbench and account settings should stay task-first, not become
+training or permission-maintenance surfaces:
+
+- Do not add a persistent `快速上手` / onboarding checklist to the workbench by
+  default. If first-login guidance is needed, use a dismissible welcome dialog
+  with at most three real business entries.
+- Welcome or onboarding entries must point to executable user tasks, such as
+  `处理待办`, `提交报销` or `请假`; do not use explanatory entries like
+  `了解流程`, and do not route users to settings or notifications as a
+  substitute for task guidance.
+- `个人设置` default content is account identity, notification preference and
+  Enterprise WeChat binding. Organization, report line and role summary may be
+  folded under `账号详情`; permission code lists and full employee dossier fields
+  stay out of the default view.
+
+**Why**: Small teams need fewer default decisions. Persistent onboarding and
+permission-heavy profile pages make ordinary users inspect system internals
+before doing work.
+
+**Tests Required**:
+
+- Focused Playwright coverage for changed workbench or profile routes.
+- Screenshot evidence for first-login welcome, workbench first screen and
+  profile default view when changing these surfaces.
+
 ## Convention: Detail And Mobile Command Surfaces
 
 **What**: PC detail pages and notification-like flows should reuse the Wave3