feat(good): wire GOOD import/export UI into the Diagnose view

Completes the GOOD interop point end-to-end (the conversion engine landed earlier
in goodInterop.ts). No new IPC needed - reuses the existing artifacts:load /
artifacts:saveMany / good:export bridge.

- Scan controller gains exportGoodFromStore (loadArtifacts -> storedArtifactsToGood
  -> exportGood) and importGoodArtifacts (saveMany + snapshot refresh), plus a
  canGoodInterop flag.
- DiagnosticsView adds a GOOD Interop card: export the scan store as GOOD, or
  import a GOOD file. The file is read in the renderer via a file input +
  goodDatabaseToStoredArtifacts, so no file-dialog IPC is required.

Verified in the browser preview after a clean restart: the Diagnose view renders
all cards (Status, Last scan, GOOD Interop, Automation log, Crops/OCR), the
Scan<->Diagnose switch works with no console errors (the earlier hook-order
warnings were stale-HMR artifacts from deleting files mid-session). 120 tests +
build green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/features/scan/hooks/useScanViewController.ts

@@ -16,6 +16,8 @@ import { useScanViewStateSync } from "./useScanViewStateSync";
 import { emptyAutoScanStats, resolveScanTargetCount, type AutoScanStats, type ScanSummary } from "../../../lib/scannerSession";
 import type { ScanViewProps, ScanViewControllerResult } from "../types";
 import type { CaptureResult, ClickResult, ReviewSampleRecord } from "../../../types/global";
+import type { StoredArtifactRecord } from "../../../types/storage";
+import { storedArtifactsToGood } from "../../../lib/goodInterop";
 import { createRendererRepositories } from "../../../infrastructure/repositories/rendererBridgeRepositories";
 
 export function useScanViewController({
@@ -37,6 +39,7 @@ export function useScanViewController({
   const snapshotRepo = repositories?.snapshot;
   const automationRepo = repositories?.automation;
   const captureRepo = repositories?.capture;
+  const exportRepo = repositories?.export;
 
   const [detailsOpen, setDetailsOpen] = useState(false);
   const [diagnosticsOpen, setDiagnosticsOpen] = useState(false);
@@ -152,6 +155,25 @@ export function useScanViewController({
     setReviewQueueOpen,
   });
 
+  const canGoodInterop = bridgeReady && Boolean(artifactRepo?.loadAll) && Boolean(artifactRepo?.saveMany);
+
+  const exportGoodFromStore = useCallback(async () => {
+    if (!artifactRepo?.loadAll || !exportRepo?.exportGood) return { ok: false, count: 0 };
+    const loaded = await artifactRepo.loadAll();
+    const records = loaded.artifacts ?? [];
+    const good = storedArtifactsToGood(records);
+    const result = await exportRepo.exportGood(good);
+    return { ok: Boolean(result.ok), path: result.path, count: good.artifacts.length };
+  }, [artifactRepo, exportRepo]);
+
+  const importGoodArtifacts = useCallback(async (records: StoredArtifactRecord[]) => {
+    if (!artifactRepo?.saveMany || records.length === 0) return { ok: false, added: 0, updated: 0 };
+    const result = await artifactRepo.saveMany(records);
+    if (typeof result.total === "number") setStoredTotal(result.total);
+    await onStoredArtifactsChanged?.();
+    return { ok: Boolean(result.ok), added: result.added ?? 0, updated: result.updated ?? 0 };
+  }, [artifactRepo, onStoredArtifactsChanged]);
+
   useScanViewStateSync({
     artifactRepo,
     latestCapture,
@@ -229,5 +251,8 @@ export function useScanViewController({
     openReviewQueue: openReviewQueueModal,
     runAutoReviewScan,
     runVisibleGridScan,
+    canGoodInterop,
+    exportGoodFromStore,
+    importGoodArtifacts,
   };
 }