fix(ci): resolve pipeline #516 audit and test failures

- Add pnpm overrides for minimatch (>=10.2.1) and tar (>=7.5.8)
  to resolve high-severity audit findings blocking CI
- Add localStorage mock to web vitest setup to fix ThemeProvider
  test failures (localStorage.clear not a function)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -63,6 +63,8 @@
     ],
     "overrides": {
       "@isaacs/brace-expansion": ">=5.0.1",
+      "minimatch": ">=10.2.1",
+      "tar": ">=7.5.8",
       "form-data": ">=2.5.4",
       "lodash": ">=4.17.23",
       "lodash-es": ">=4.17.23",