chore(deps): bump web vitest 4.1.12 and sign vite 6.4.4 (#64)

web: @vitest/mocker alerts cleared via vitest 4.1.12 (dev-only).
sign: vite 6.4.3 -> 6.4.4 clears five dev-server alerts.
Both releases are past the 14-day age rule.

web/package.json

@@ -148,6 +148,6 @@
     "vite": "^7.3.7",
     "vite-plugin-node-polyfills": "^0.25.0",
     "vite-plugin-subresource-integrity": "^0.0.12",
-    "vitest": "^4.1.11"
+    "vitest": "^4.1.12"
   }
 }