Merge remote-tracking branch 'origin/dev' into sub_laptop_7

A00_Common/design/design_save.ts

@@ -25,7 +25,7 @@ import {
   pendingAlignment,
 } from "../../B05_Profile/B05_Profile_UI_Profile_Edit";
 import { flushCulvertOptions } from "../../B06_Section/B06_Section_Api_Culvert_Options";
-import { stateKey } from "../b_page_state";
+import { clearState, stateKey } from "../b_page_state";
 
 /** 저장 차례 — 이 순서 그대로 돈다. */
 export const DESIGN_SAVE_ORDER = [
@@ -134,6 +134,7 @@ export async function saveDesign(
       const label = TOLERANT[step];
       await (label ? run().catch(reportOnly(label)) : run());
     }
+    clearState("structure-type-cache", ctx.projectId); // 종류별 캐시는 저장 뒤 비움(54-32)
     await ctx.done?.(confirm);
     return true;
   } catch (error) {