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>

A00_Common/b_workflow_nav.ts

@@ -18,8 +18,8 @@ export interface WorkflowState {
 export const WORKFLOW_STEP_ROUTES: readonly RoutePath[] = [
   ROUTES.B03_FILE_INPUT,
   ROUTES.B04_PREPROCESS,
-  ROUTES.B05_WF2_ROUTE,
-  ROUTES.B06_WF3_PROFILE_CROSS,
+  ROUTES.B05_PROFILE,
+  ROUTES.B06_SECTION,
   ROUTES.B07_WF4_DESIGN_DETAIL,
   ROUTES.B08_WF5_QUANTITY,
   ROUTES.B09_WF6_ESTIMATION,

A00_Common/main.ts

@@ -19,8 +19,8 @@ const FOOTERLESS_ROUTES: readonly RoutePath[] = [
   ROUTES.B02_PROJ_REGISTER,
   ROUTES.B03_FILE_INPUT,
   ROUTES.B04_PREPROCESS,
-  ROUTES.B05_WF2_ROUTE,
-  ROUTES.B06_WF3_PROFILE_CROSS,
+  ROUTES.B05_PROFILE,
+  ROUTES.B06_SECTION,
   ROUTES.B07_WF4_DESIGN_DETAIL,
   ROUTES.B08_WF5_QUANTITY,
   ROUTES.B09_WF6_ESTIMATION,

A00_Common/router.ts

@@ -41,10 +41,10 @@ const routeTable: Partial<Record<RoutePath, () => Promise<PageRenderer>>> = {
     (await import("../B03_FileInput/B03_FileInput_UI_Page")).renderB03FileInput,
   [ROUTES.B04_PREPROCESS]: async () =>
     (await import("../B04_PreProcess/B04_PreProcess_UI_Page")).renderB04Surface,
-  [ROUTES.B05_WF2_ROUTE]: async () =>
-    (await import("../B05_wf2_Route/B05_wf2_Route_UI_Page")).renderB05Route,
-  [ROUTES.B06_WF3_PROFILE_CROSS]: async () =>
-    (await import("../B06_wf3_ProfileCross/B06_wf3_ProfileCross_UI_Page")).renderB06ProfileCross,
+  [ROUTES.B05_PROFILE]: async () =>
+    (await import("../B05_Profile/B05_Profile_UI_Page")).renderB05Route,
+  [ROUTES.B06_SECTION]: async () =>
+    (await import("../B06_Section/B06_Section_UI_Page")).renderB06ProfileCross,
   [ROUTES.B07_WF4_DESIGN_DETAIL]: async () =>
     (await import("../B07_wf4_DesignDetail/B07_wf4_DesignDetail_UI_Page")).renderB07DesignDetail,
   // B08_WF5_QUANTITY: 재작성 예정으로 기존 구현을 0_old_260726_codex.zip에 백업 후 제거.
@@ -107,8 +107,8 @@ export async function renderCurrentRoute(outlet: HTMLElement): Promise<void> {
     ROUTES.B02_PROJ_REGISTER,
     ROUTES.B03_FILE_INPUT,
     ROUTES.B04_PREPROCESS,
-    ROUTES.B05_WF2_ROUTE,
-    ROUTES.B06_WF3_PROFILE_CROSS,
+    ROUTES.B05_PROFILE,
+    ROUTES.B06_SECTION,
     ROUTES.B07_WF4_DESIGN_DETAIL,
     ROUTES.B08_WF5_QUANTITY,
     ROUTES.B09_WF6_ESTIMATION,