refactor(B05,B06): B05_wf2_Route -> B05_Profile, B06_wf3_ProfileCross -> B06_Section 동시 개명

- 한몸으로 동작하는 두 페이지라 한 커밋으로 처리 (상호 참조 다수)
- B05 37파일 + B06 20파일 접두사 개명 (git mv, 이력 보존)
- 참조 치환 91파일: import 경로, 라우트 슬러그(b05-profile/b06-section),
  라우트 키(B05_PROFILE/B06_SECTION), B03 자동 체인, storage 상수, pyproject 제외 경로
- 로직 변경 없음. typecheck·백엔드 import 검증 통과

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

B04_PreProcess/B04_PreProcess_UI_Page.ts

@@ -10,7 +10,7 @@ import {
 import { createWorkflowLayout } from "@ui/ui_template_workflow_layout";
 import { fetchDashboardMe } from "../B01_Dashboard/B01_Dashboard_Api_Fetch";
 import { clearPreloadMark, purgeOtherProjects } from "../A00_Common/b_asset_cache";
-import { clearRouteLatestCache } from "../B05_wf2_Route/B05_wf2_Route_Api_Fetch";
+import { clearRouteLatestCache } from "../B05_Profile/B05_Profile_Api_Fetch";
 import { workflowSteps } from "../A00_Common/b_page_scaffold";
 import {
   fetchWorkflowState,
@@ -39,7 +39,7 @@ const SOURCE_FILTERS = ["grid_min_z", "csf", "pmf"] as const;
 const MODEL_METHODS = ["tin", "dtm", "nurbs", "implicit", "meshfree"] as const;
 const DEFAULT_FILTER = "csf";
 const DEFAULT_METHOD = "dtm";
-const ROUTE_STAGE = ROUTES.B05_WF2_ROUTE;
+const ROUTE_STAGE = ROUTES.B05_PROFILE;
 
 function L(key: keyof typeof ui_locales): string {
   return ui_locales[key][currentLanguageIndex];
@@ -109,7 +109,7 @@ export async function renderB04Surface(root: HTMLElement): Promise<void> {
       const surfaceStage = workflowState?.stages.find((stage) => stage.stage_no === 1);
       goToWorkflowStage(
         guardedProjectId,
-        surfaceStage?.state === "COMPLETE" ? ROUTES.B05_WF2_ROUTE : ROUTES.B03_FILE_INPUT,
+        surfaceStage?.state === "COMPLETE" ? ROUTES.B05_PROFILE : ROUTES.B03_FILE_INPUT,
       );
       return;
     }