fix: preserve analysis bands across input workflows

apps/acoustic-camera/main.js

@@ -981,7 +981,8 @@ function applyValidation(validation) {
       if (!state.lastRun && document.documentElement.dataset.runState === "idle") {
         setRunStatus(
           `${state.arrayDefinition.microphones.length} ch · ` +
-          `${state.experiment.scan.columns}×${state.experiment.scan.rows} · 실행 준비 완료`,
+          `${state.experiment.scan.columns}×${state.experiment.scan.rows} · ` +
+          `분석 대역 ${state.experiment.frequencyBands.length}개 · 실행 준비 완료`,
         );
       }
     }
@@ -1470,6 +1471,18 @@ function toggleLivePlayback() {
 
 async function loadMovingExample() {
   if (state.active) return;
+  const bandCount = state.experiment?.frequencyBands?.length ?? 0;
+  if (
+    (bandCount > 1 || hasUnsavedWork()) &&
+    !window.confirm(
+      "이동 예제는 현재 Scene·Array·Experiment 전체와 " +
+        String(bandCount) +
+        "개 분석 대역을 교체합니다. 계속할까요?",
+    )
+  ) {
+    setRunStatus("이동 예제를 열지 않았습니다. 현재 입력과 분석 대역을 유지합니다.");
+    return;
+  }
   beginInputOperation();
   try {
     setRunStatus("이동 음원 예제를 불러오고 있습니다…");
@@ -1494,7 +1507,7 @@ async function loadMovingExample() {
     assetRuntime.reset();
     markChanged({ syncControls: true, renderBands: true, dirty: "none" });
     renderAssets();
-    setRunStatus("이동 음원 예제를 열었습니다. ‘라이브 준비’를 누르세요.");
+    setRunStatus("Scene·Array·Experiment를 이동 음원 예제 전체로 교체했습니다. ‘Map 준비’를 누르세요.");
   } catch (error) {
     setTransientError(error, "이동 예제 불러오기 실패");
   } finally {
@@ -1561,10 +1574,10 @@ async function importDocument(kind, input) {
     } else if (kind === "scene") {
       issues = await validateScene(value);
     } else {
-      issues = await validateExperiment(value, {
-        arrayDefinition: state.arrayDefinition,
-        scene: state.scene,
-      });
+      // An Experiment is a useful editable document even before its referenced
+      // Scene or Array has been loaded. Validate its own contract here, then let
+      // validateCurrent() keep Run disabled until the document IDs line up.
+      issues = await validateExperiment(value);
     }
     if (generation !== state.importGenerations[kind]) return;
     if (issues.length > 0) throw new Error(issues.slice(0, 4).map(formatIssue).join(" · "));
@@ -1588,7 +1601,21 @@ async function importDocument(kind, input) {
       dirty: kind === "experiment" ? "none" : "experiment",
     });
     renderAssets();
-    setRunStatus(`${file.name} ${kind} 문서를 불러왔습니다.`);
+    const bandStatus = kind === "scene"
+      ? ` · 분석 대역 ${state.experiment.frequencyBands.length}개 유지`
+      : kind === "experiment"
+        ? ` · 분석 대역 ${state.experiment.frequencyBands.length}개`
+        : "";
+    const pendingReferences = kind === "experiment"
+      ? [
+          value.sceneId !== state.scene?.id ? `Scene ${value.sceneId}` : null,
+          value.arrayId !== state.arrayDefinition?.id ? `Array ${value.arrayId}` : null,
+        ].filter(Boolean)
+      : [];
+    const referenceStatus = pendingReferences.length > 0
+      ? ` · ${pendingReferences.join(" · ")} 연결 대기`
+      : "";
+    setRunStatus(`${file.name} ${kind} 문서를 불러왔습니다.${bandStatus}${referenceStatus}`);
   } catch (error) {
     setTransientError(error, `${file.name} 불러오기 실패`);
   } finally {