feat(admin,rvw,asl,frontend): Batch import redesign + RVW parallel skills + UI improvements

Backend:
- Redesign batch user import: add autoInheritModules param, users auto-inherit tenant modules when true
- Add module validation: reject modules not subscribed by the tenant
- Soften department validation: skip instead of fail when department name not found
- Fix RVW skill status semantics: review findings (ERROR issues) no longer mark skill as error
- Add parallel execution support to SkillExecutor via parallelGroup
- Configure Editorial + Methodology skills to run in parallel (~240s -> ~130s)
- Update legacy bridge error message to user-friendly text

Frontend:
- Redesign ImportUserModal: 4-step flow (select tenant -> upload -> preview -> result)
- Simplify import template: remove tenant code and module columns
- Show tenant subscribed modules before import with auto-inherit option
- Fix isLegacyEmbed modules bypassing RouteGuard and TopNavigation permission checks
- Hide ASL fulltext screening (step 3), renumber subsequent nav items
- Add ExtractionWorkbenchGuide page when no taskId provided
- Update legacy system error message to network-friendly text

Docs:
- Update deployment changelog with BE-9, FE-11 entries

Made-with: Cursor

frontend-v2/src/modules/legacy/LegacySystemPage.tsx

@@ -51,10 +51,9 @@ const LegacySystemPage: React.FC<LegacySystemPageProps> = ({ targetUrl }) => {
       authDoneRef.current = true
       setStatus('ready')
     } catch (err: any) {
-      const msg = err?.response?.data?.message || err?.message || '服务连接失败，请稍后重试'
+      const msg = err?.response?.data?.message || '网络连接问题，请点击下方按钮重试'
       setErrorMsg(msg)
       setStatus('error')
-      message.error(msg)
     }
   }, [targetUrl])