feat: protect unsaved camera work

tests/integration/camera-ui.test.js

@@ -44,6 +44,7 @@ test("Acoustic Camera가 8×8 CPU 실행·결과 저장·stale·재실행 흐름
   const objectUrls = [];
   const originalAnchorClick = windowObject.HTMLAnchorElement.prototype.click;
   const originalRevoke = windowObject.URL.revokeObjectURL.bind(windowObject.URL);
+  const originalConfirm = windowObject.confirm.bind(windowObject);
   windowObject.HTMLAnchorElement.prototype.click = function captureDownload() {
     downloads.push({ fileName: this.download, url: this.href });
   };
@@ -73,6 +74,10 @@ test("Acoustic Camera가 8×8 CPU 실행·결과 저장·stale·재실행 흐름
       "8×8 CPU 입력 검증",
     );
     assertEqual(documentObject.querySelector("#grid-preset").value, "custom", "custom grid preset");
+    assert(
+      documentObject.documentElement.dataset.unsavedWork.includes("Experiment"),
+      "edited Experiment is marked unsaved",
+    );
 
     documentObject.querySelector("#run-button").click();
     await waitFor(
@@ -85,6 +90,20 @@ test("Acoustic Camera가 8×8 CPU 실행·결과 저장·stale·재실행 흐름
     assert(documentObject.querySelectorAll("#metric-grid .metric-card").length >= 9, "result metrics rendered");
     assert(!documentObject.querySelector("#metric-grid").classList.contains("is-hidden"), "metrics visible");
     assert(documentObject.querySelector("#result-badge").textContent.includes("CPU"), "backend badge rendered");
+    assert(documentObject.documentElement.dataset.unsavedWork.includes("Result"), "completed Result is unsaved");
+    assert(
+      documentObject.documentElement.dataset.unsavedWork.includes("비교 기록"),
+      "comparison summary is unsaved",
+    );
+    let replacementConfirmCount = 0;
+    windowObject.confirm = () => {
+      replacementConfirmCount += 1;
+      return false;
+    };
+    documentObject.querySelector("#run-button").click();
+    await waitFor(() => replacementConfirmCount === 1, "unsaved Result replacement confirmation");
+    assertEqual(documentObject.documentElement.dataset.runState, "done", "declined replacement keeps result");
+    windowObject.confirm = originalConfirm;
     await nextPaint(windowObject);
     assert(canvas.toDataURL() !== initialCanvas, "result heatmap changed the scene canvas");
 
@@ -94,6 +113,10 @@ test("Acoustic Camera가 8×8 CPU 실행·결과 저장·stale·재실행 흐름
       "Result JSON download",
     );
     const resultDocument = await fetch(resultDownload.url).then((response) => response.json());
+    assert(
+      !documentObject.documentElement.dataset.unsavedWork.includes("Result"),
+      "Result export clears Result dirty state",
+    );
     const [scene, experiment] = await Promise.all([
       loadJson("/assets/sample-scenes/single-tone.scene.json"),
       loadJson("/assets/sample-scenes/single-tone.experiment.json"),
@@ -156,7 +179,30 @@ test("Acoustic Camera가 8×8 CPU 실행·결과 저장·stale·재실행 흐름
     const historyText = documentObject.querySelector("#history-list").textContent;
     assert(historyText.includes("rectangular baseline"), "baseline history retained");
     assert(historyText.includes("Fermat spiral"), "comparison array history added");
+
+    documentObject.querySelector("#export-history-button").click();
+    const historyDownload = await waitFor(
+      () => downloads.find((download) => download.fileName.endsWith(".comparison-history.json")),
+      "comparison history download",
+    );
+    const historyDocument = await fetch(historyDownload.url).then((response) => response.json());
+    assertEqual(historyDocument.kind, "micarrsim.comparison-history", "comparison history kind");
+    assertEqual(historyDocument.items.length, 2, "both comparison summaries exported");
+    assert(
+      !documentObject.documentElement.dataset.unsavedWork.includes("비교 기록"),
+      "history export clears comparison dirty state",
+    );
+
+    documentObject.querySelector("#export-result-button").click();
+    documentObject.querySelector("#export-experiment-button").click();
+    await waitFor(
+      () => !documentObject.documentElement.dataset.unsavedWork.includes("Result") &&
+        !documentObject.documentElement.dataset.unsavedWork.includes("Experiment"),
+      "final Camera documents saved",
+    );
+    assertEqual(documentObject.documentElement.dataset.unsavedWork, "", "all Camera work is saved");
   } finally {
+    windowObject.confirm = originalConfirm;
     windowObject.HTMLAnchorElement.prototype.click = originalAnchorClick;
     windowObject.URL.revokeObjectURL = originalRevoke;
     for (const url of objectUrls) originalRevoke(url);