refactor frontend storage access through safeStorage

tests/test_storage_unification.mjs

@@ -0,0 +1,17 @@
+import assert from 'node:assert/strict';
+import { readFile } from 'node:fs/promises';
+import test from 'node:test';
+
+const STORAGE_MODULES = [
+  'web/resolver/model_resolver.js',
+  'web/resolver/actions/queue_storage_methods.js',
+  'web/resolver/actions/queue_methods.js',
+];
+
+test('resolver storage modules use safeStorage instead of direct localStorage access', async () => {
+  for (const relativePath of STORAGE_MODULES) {
+    const source = await readFile(new URL(`../${relativePath}`, import.meta.url), 'utf8');
+    assert.match(source, /safeStorage\.(?:getItem|setItem|removeItem)/, relativePath);
+    assert.doesNotMatch(source, /\blocalStorage\s*\./, relativePath);
+  }
+});