Sprint 25/26 — 단면 분기 수정 + 다경간 + 피어 배치

Sprint 25: build_selectable_scene 의 SectionType::PscI 하드코딩 제거.
- p.section_type 에 따라 PscI / SteelBox 분기 (build_bridge_scene 과 동일 로직).
- 사용자가 단면 형식 전환 시 정상 반영.

Sprint 26: 다경간 + 교각 배치 (ParaWiki 교각 wiki Phase 1 MVP).
- SceneParams: span_count (1~5) + pier_type (SingleColumn/MultiColumn) 추가.
- span_m 의미 변경: 전체 교량 길이 → 경간당 길이. total = span_m × span_count.
- pier_ir_for_params() helper: 기본 사각 기둥·2m CSB·2.5m TB·5m column_height.
- build_bridge_scene / build_selectable_scene:
  · 거더: 경간마다 독립 세트 (span_count × girder_count 개)
  · 데크 슬래브: 전 구간 연속 1개
  · 받침: 모든 지점 (교대 2 + 교각 span_count-1)
  · 교각: 내부 지점 span_count-1 개 (새 기능)
  · 교대: 양 끝 (z=-800, z=total_mm)
  · 가로보: 경간마다 반복
  · 신축이음: 모든 지점 (선택적)
- build_background_scene + scene_extents: total_mm 기준으로 ground·alignment 길이 확장.
- project_file: version=2, span_count·pier_type 필드 추가 (v1 호환 default 값).
- UI ribbon: "경간 수" 슬라이더 + "교각 형식" T/π 선택.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cimery/crates/app/gen/schemas/acl-manifests.json

@@ -0,0 +1 @@
+{"core":{"default_permission":{"identifier":"default","description":"Default core plugins set.","permissions":["core:path:default","core:event:default","core:window:default","core:webview:default","core:app:default","core:image:default","core:resources:default","core:menu:default","core:tray:default"]},"permissions":{},"permission_sets":{},"global_scope_schema":null},"core:app":{"default_permission":{"identifier":"default","description":"Default permissions for the plugin.","permissions":["allow-version","allow-name","allow-tauri-version","allow-identifier","allow-bundle-type","allow-register-listener","allow-remove-listener"]},"permissions":{"allow-app-hide":{"identifier":"allow-app-hide","description":"Enables the app_hide command without any pre-configured scope.","commands":{"allow":["app_hide"],"deny":[]}},"allow-app-show":{"identifier":"allow-app-show","description":"Enables the app_show command without any pre-configured scope.","commands":{"allow":["app_show"],"deny":[]}},"allow-bundle-type":{"identifier":"allow-bundle-type","description":"Enables the bundle_type command without any pre-configured scope.","commands":{"allow":["bundle_type"],"deny":[]}},"allow-default-window-icon":{"identifier":"allow-default-window-icon","description":"Enables the default_window_icon command without any pre-configured scope.","commands":{"allow":["default_window_icon"],"deny":[]}},"allow-fetch-data-store-identifiers":{"identifier":"allow-fetch-data-store-identifiers","description":"Enables the fetch_data_store_identifiers command without any pre-configured scope.","commands":{"allow":["fetch_data_store_identifiers"],"deny":[]}},"allow-identifier":{"identifier":"allow-identifier","description":"Enables the identifier command without any pre-configured scope.","commands":{"allow":["identifier"],"deny":[]}},"allow-name":{"identifier":"allow-name","description":"Enables the name command without any pre-configured scope.","commands":{"allow":["name"],"deny":[]}},"allow-register-listener":{"identifier":"allow-register-listener","description":"Enables the register_listener command without any pre-configured scope.","commands":{"allow":["register_listener"],"deny":[]}},"allow-remove-data-store":{"identifier":"allow-remove-data-store","description":"Enables the remove_data_store command without any pre-configured scope.","commands":{"allow":["remove_data_store"],"deny":[]}},"allow-remove-listener":{"identifier":"allow-remove-listener","description":"Enables the remove_listener command without any pre-configured scope.","commands":{"allow":["remove_listener"],"deny":[]}},"allow-set-app-theme":{"identifier":"allow-set-app-theme","description":"Enables the set_app_theme command without any pre-configured scope.","commands":{"allow":["set_app_theme"],"deny":[]}},"allow-set-dock-visibility":{"identifier":"allow-set-dock-visibility","description":"Enables the set_dock_visibility command without any pre-configured scope.","commands":{"allow":["set_dock_visibility"],"deny":[]}},"allow-tauri-version":{"identifier":"allow-tauri-version","description":"Enables the tauri_version command without any pre-configured scope.","commands":{"allow":["tauri_version"],"deny":[]}},"allow-version":{"identifier":"allow-version","description":"Enables the version command without any pre-configured scope.","commands":{"allow":["version"],"deny":[]}},"deny-app-hide":{"identifier":"deny-app-hide","description":"Denies the app_hide command without any pre-configured scope.","commands":{"allow":[],"deny":["app_hide"]}},"deny-app-show":{"identifier":"deny-app-show","description":"Denies the app_show command without any pre-configured scope.","commands":{"allow":[],"deny":["app_show"]}},"deny-bundle-type":{"identifier":"deny-bundle-type","description":"Denies the bundle_type command without any pre-configured scope.","commands":{"allow":[],"deny":["bundle_type"]}},"deny-default-window-icon":{"identifier":"deny-default-window-icon","description":"Denies the default_window_icon command without any pre-configured scope.","commands":{"allow":[],"deny":["default_window_icon"]}},"deny-fetch-data-store-identifiers":{"identifier":"deny-fetch-data-store-identifiers","description":"Denies the fetch_data_store_identifiers command without any pre-configured scope.","commands":{"allow":[],"deny":["fetch_data_store_identifiers"]}},"deny-identifier":{"identifier":"deny-identifier","description":"Denies the identifier command without any pre-configured scope.","commands":{"allow":[],"deny":["identifier"]}},"deny-name":{"identifier":"deny-name","description":"Denies the name command without any pre-configured scope.","commands":{"allow":[],"deny":["name"]}},"deny-register-listener":{"identifier":"deny-register-listener","description":"Denies the register_listener command without any pre-configured scope.","commands":{"allow":[],"deny":["register_listener"]}},"deny-remove-data-store":{"identifier":"deny-remove-data-store","description":"Denies the remove_data_store command Line truncated

cimery/crates/app/gen/schemas/capabilities.json

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+{"default":{"identifier":"default","description":"Default cimery app capabilities","local":true,"windows":["main"],"permissions":["core:default","dialog:allow-open","dialog:allow-save","dialog:allow-message"]}}