chore: 리팩토링 마감 — 포맷터 적용·내부 라벨 정리·계획서 체크리스트 완료 표시

- prettier 적용(편집 파일 14종), ruff format 무변경 확인
- B03 내부 백그라운드 태스크 라벨 b04-wf1-auto -> b04-preprocess-auto
- docs/raw/PLAN.md R1 체크리스트 Phase 1~7 완료 표시 (검증 대기 상태로 전환)

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

B03_FileInput/B03_FileInput_Router.py

@@ -332,7 +332,7 @@ async def upload_project_files(
                     input_file_id=point_cloud_input_id,
                     user_role=str(session["role"]),
                 ),
-                task_name=f"b04-wf1-auto-{project_id}",
+                task_name=f"b04-preprocess-auto-{project_id}",
             )
         return FileUploadResponse(project_id=str(project_id), files=results)
     except LookupError as exc:
@@ -562,7 +562,7 @@ async def finalize_project_upload(
                     input_file_id=point_cloud_input_id,
                     user_role=str(session["role"]),
                 ),
-                task_name=f"b04-wf1-auto-{project_id}",
+                task_name=f"b04-preprocess-auto-{project_id}",
             )
         return FileUploadResponse(project_id=str(project_id), files=[result])
     except LookupError as exc: