diff --git a/.claude/rules/testing.md b/.claude/rules/testing.md
index 75577c16d..ee415a835 100644
--- a/.claude/rules/testing.md
+++ b/.claude/rules/testing.md
@@ -28,6 +28,52 @@ E2E files: **must** use `.spec.ts` extension (`.test.ts` not detected).
 
 Route unit tests: `src/routes/**/*.test.ts` is included by `vite.config.ts`. **Never use `+` as a filename prefix** — SvelteKit reserves it and `pnpm check` will error. Name route test files `page_server.test.ts`, not `+page.server.test.ts`.
 
+## Test Environment
+
+Default is `node` (set in `vite.config.ts`). Only files touching the real DOM (`window` / `document` / `localStorage`) opt in with a top-of-file `// @vitest-environment jsdom`. **Never set jsdom globally** — most tests are pure units and per-file jsdom construction is ~5.5x slower.
+
+### Toggling `browser` per describe
+
+**Never register `vi.mock('$app/environment')` twice in one file.** Every `vi.mock` is hoisted above the imports and runs once before any test, so a `{ browser: false }` mock written inside an SSR `describe`/`beforeEach` silently overwrites the `{ browser: true }` one at the top — the whole file ends up pinned to `browser = false`, the localStorage branches never execute, and tests that "verify" them become false-positives while still passing.
+
+Use **one dynamic mock** driven by a `vi.hoisted` flag, and toggle the flag in `beforeEach`. Default the flag to `false` so singletons constructed at import time stay SSR-safe:
+
+```typescript
+// @vitest-environment jsdom
+const browserState = vi.hoisted(() => ({ value: false }));
+
+vi.mock('$app/environment', () => ({
+  get browser() {
+    return browserState.value;
+  },
+}));
+
+describe('MyStore', () => {
+  let store: MyStore;
+
+  beforeEach(() => {
+    browserState.value = true;
+    localStorage.clear();
+    store = new MyStore(); // constructed after the flag flips — reads localStorage
+  });
+  // …
+});
+
+describe('MyStore in SSR', () => {
+  beforeEach(() => {
+    browserState.value = false;
+  });
+  // …
+});
+```
+
+**Never assert a browser branch on the import-time singleton.** The flag is `false` while the module graph is evaluated, so the exported singleton is always built in SSR mode and never touches localStorage — asserting on it under `browser = true` is the same false-positive as the double-`vi.mock` above. Construct a fresh instance inside the browser `describe` (which is why the store class, not just the singleton, needs a named export). The singleton is still worth one assertion: that import-time construction is SSR-safe.
+
+In jsdom files, do **not** stub localStorage with `vi.stubGlobal` — use jsdom's real `Storage` and assert on state (`localStorage.getItem(key)`), not on spy calls. Cover both SSR guards with separate cases, since one assertion cannot carry both:
+
+- **read guard**: pre-seed localStorage, construct a fresh store, expect the _default_ (the pre-seeded value stays in storage, so do not expect `getItem(key)` to be null here)
+- **write guard**: start from empty localStorage, call the setter, expect `getItem(key)` to still be null
+
 ## Unit Testing Patterns
 
 ### Assertions
diff --git a/compose.yaml b/compose.yaml
index ca78cccf6..28e479c63 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -6,8 +6,8 @@ services:
       - '5555:5555'
     tty: true
     volumes:
-      - .:/usr/src/app:cached
-      - ./node_modules:/usr/src/app/node_modules:cached
+      - .:/usr/src/app
+      - ./node_modules:/usr/src/app/node_modules
     environment:
       - NODE_ENV=development
       - DATABASE_URL=postgresql://db_user:db_password@db:5432/test_db?pgbouncer=true&connection_limit=10&connect_timeout=60&statement_timeout=60000 # Note: Local server cannot start if port is set to db:6543.
diff --git a/package.json b/package.json
index 177d5e52b..120918a26 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,6 @@
     "@sveltejs/vite-plugin-svelte": "7.2.0",
     "@tailwindcss/forms": "0.5.11",
     "@tailwindcss/vite": "4.3.2",
-    "@testing-library/jest-dom": "6.9.1",
     "@types/gtag.js": "0.0.20",
     "@types/jsdom": "28.0.3",
     "@typescript-eslint/eslint-plugin": "8.63.0",
@@ -77,8 +76,6 @@
     "@lucia-auth/adapter-prisma": "3.0.2",
     "@lucide/svelte": "1.24.0",
     "@prisma/client": "5.22.0",
-    "@testing-library/svelte": "5.4.2",
-    "@types/jest": "30.0.0",
     "@types/node": "25.9.5",
     "debug": "4.4.3",
     "lucia": "2.7.7",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index da0968fb3..9a2de3637 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -42,12 +42,6 @@ importers:
       '@prisma/client':
         specifier: 5.22.0
         version: 5.22.0(prisma@5.22.0)
-      '@testing-library/svelte':
-        specifier: 5.4.2
-        version: 5.4.2(svelte@5.56.4(@typescript-eslint/types@8.63.0))(vite@8.1.4(@types/node@25.9.5)(esbuild@0.28.1)(jiti@2.7.0)(tsx@4.23.1))(vitest@4.1.10)
-      '@types/jest':
-        specifier: 30.0.0
-        version: 30.0.0
       '@types/node':
         specifier: 25.9.5
         version: 25.9.5
@@ -103,9 +97,6 @@ importers:
       '@tailwindcss/vite':
         specifier: 4.3.2
         version: 4.3.2(vite@8.1.4(@types/node@25.9.5)(esbuild@0.28.1)(jiti@2.7.0)(tsx@4.23.1))
-      '@testing-library/jest-dom':
-        specifier: 6.9.1
-        version: 6.9.1
       '@types/gtag.js':
         specifier: 0.0.20
         version: 0.0.20
@@ -214,9 +205,6 @@ importers:
 
 packages:
 
-  '@adobe/css-tools@4.4.4':
-    resolution: {integrity: sha512-Elp+iwUx5rN5+Y8xLt5/GRoG20WGoDCQ/1Fb+1LiGtvwbDavuSk0jhD/eZdckHAuzcDzccnkv+rEjyWfRx18gg==}
-
   '@ark/schema@0.56.1':
     resolution: {integrity: sha512-1Cf2g9nKD8K/3JGRu+gCCfYw5d4qR8YLLjDs5W5kpmaButCYWAPFUJqSXyBATPjglzCd4tIkp398iPYVs8MjRA==}
 
@@ -238,10 +226,6 @@ packages:
   '@asamuzakjp/nwsapi@2.3.9':
     resolution: {integrity: sha512-n8GuYSrI9bF7FFZ/SjhwevlHc8xaVlb/7HmHelnc/PZXBD2ZR49NnN9sMMuDdEGPeeRQ5d0hqlSlEpgCX3Wl0Q==}
 
-  '@babel/code-frame@7.27.1':
-    resolution: {integrity: sha512-cjQ7ZlQ0Mv3b47hABuTevyTuYN4i+loJKGeV9flcCgIK37cCXRh+L1bd3iBHlynerhQ7BhCkn2BPbQUL+rGqFg==}
-    engines: {node: '>=6.9.0'}
-
   '@babel/helper-string-parser@7.29.7':
     resolution: {integrity: sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw==}
     engines: {node: '>=6.9.0'}
@@ -763,30 +747,6 @@ packages:
     resolution: {integrity: sha512-wgm9Ehl2jpeqP3zw/7mo3kRHFp5MEDhqAdwy1fTGkHAwnkGOVsgpvQhL8B5n1qlb01jV3n/bI0ZfZp5lWA1k4w==}
     engines: {node: '>=18.0.0'}
 
-  '@jest/diff-sequences@30.0.1':
-    resolution: {integrity: sha512-n5H8QLDJ47QqbCNn5SuFjCRDrOLEZ0h8vAHCK5RL9Ls7Xa8AQLa/YxAc9UjFqoEDM48muwtBGjtMY5cr0PLDCw==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  '@jest/expect-utils@30.2.0':
-    resolution: {integrity: sha512-1JnRfhqpD8HGpOmQp180Fo9Zt69zNtC+9lR+kT7NVL05tNXIi+QC8Csz7lfidMoVLPD3FnOtcmp0CEFnxExGEA==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  '@jest/get-type@30.1.0':
-    resolution: {integrity: sha512-eMbZE2hUnx1WV0pmURZY9XoXPkUYjpc55mb0CrhtdWLtzMQPFvu/rZkTLZFTsdaVQa+Tr4eWAteqcUzoawq/uA==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  '@jest/pattern@30.0.1':
-    resolution: {integrity: sha512-gWp7NfQW27LaBQz3TITS8L7ZCQ0TLvtmI//4OwlQRx4rnWxcPNIYjxZpDcN4+UlGxgm3jS5QPz8IPTCkb59wZA==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  '@jest/schemas@30.0.5':
-    resolution: {integrity: sha512-DmdYgtezMkh3cpU8/1uyXakv3tJRcmcXxBOcO0tbaozPwpmh4YMsnWrQm9ZmZMfa5ocbxzbFk6O4bDPEc/iAnA==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  '@jest/types@30.2.0':
-    resolution: {integrity: sha512-H9xg1/sfVvyfU7o3zMfBEjQ1gcsdeTMgqHoYdN79tuLqfTtuu7WckRA1R5whDwOzxaZAeMKTYWqP+WCAi0CHsg==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
   '@jridgewell/gen-mapping@0.3.13':
     resolution: {integrity: sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==}
 
@@ -1501,9 +1461,6 @@ packages:
   '@sinclair/typebox@0.25.24':
     resolution: {integrity: sha512-XJfwUVUKDHF5ugKwIcxEgc9k8b7HbznCp6eUfWgu710hMPNIO4aw4/zB5RogDQz8nd6gyCDpU9O/m6qYEWY6yQ==}
 
-  '@sinclair/typebox@0.34.41':
-    resolution: {integrity: sha512-6gS8pZzSXdyRHTIqoqSVknxolr1kzfy4/CeDnrzsVz8TTIWUbOBr6gnzOmTYJ3eXQNh4IYHIGi5aIL7sOZ2G/g==}
-
   '@standard-schema/spec@1.1.0':
     resolution: {integrity: sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==}
 
@@ -1644,33 +1601,6 @@ packages:
     peerDependencies:
       vite: ^5.2.0 || ^6 || ^7 || ^8
 
-  '@testing-library/dom@10.4.1':
-    resolution: {integrity: sha512-o4PXJQidqJl82ckFaXUeoAW+XysPLauYI43Abki5hABd853iMhitooc6znOnczgbTYmEP6U6/y1ZyKAIsvMKGg==}
-    engines: {node: '>=18'}
-
-  '@testing-library/jest-dom@6.9.1':
-    resolution: {integrity: sha512-zIcONa+hVtVSSep9UT3jZ5rizo2BsxgyDYU7WFD5eICBE7no3881HGeb/QkGfsJs6JTkY1aQhT7rIPC7e+0nnA==}
-    engines: {node: '>=14', npm: '>=6', yarn: '>=1'}
-
-  '@testing-library/svelte-core@1.1.3':
-    resolution: {integrity: sha512-KkMAvXeWorxN2Yn0kdC1lfoAItxpoj4uOWzxK5leDrNxonLvS5nwBFvztrroyTszQ0Wf/EU6iLT8JhY5qcn22g==}
-    engines: {node: '>=16'}
-    peerDependencies:
-      svelte: ^3 || ^4 || ^5 || ^5.0.0-next.0
-
-  '@testing-library/svelte@5.4.2':
-    resolution: {integrity: sha512-4o31E4HGo5BU5KwPkulNRocEden+7Tt9JYm9uhln5ajF7DULeyFA46BBWVfKJ8Ms9B3JmOFPTIiVamH7n3KpuQ==}
-    engines: {node: '>= 10'}
-    peerDependencies:
-      svelte: ^3 || ^4 || ^5 || ^5.0.0-next.0
-      vite: '*'
-      vitest: '*'
-    peerDependenciesMeta:
-      vite:
-        optional: true
-      vitest:
-        optional: true
-
   '@tootallnate/once@2.0.1':
     resolution: {integrity: sha512-HqmEUIGRJ5fSXchkVgR5F7qn48bDBzv0kWj/Kfu5e6uci4UlEeng4331LnBkWffb++Ei3FOVLxo8JJWMFBDMeQ==}
     engines: {node: '>= 10'}
@@ -1684,9 +1614,6 @@ packages:
   '@tybys/wasm-util@0.10.3':
     resolution: {integrity: sha512-F3fo1MYrRJYL3zER0OUOmkutjr1Vp23m7OsSgp7nq4SP6OqX6C/56XFIPAl5bt3zaBRjmW7SGz3u/6LwFpYcOg==}
 
-  '@types/aria-query@5.0.4':
-    resolution: {integrity: sha512-rfT93uj5s0PRL7EzccGMs3brplhcrghnDoV26NqKhCAS1hVo+WdNsPvE/yb6ilfr5hi2MEk6d5EWJTKdxg8jVw==}
-
   '@types/chai@5.2.3':
     resolution: {integrity: sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==}
 
@@ -1705,18 +1632,6 @@ packages:
   '@types/gtag.js@0.0.20':
     resolution: {integrity: sha512-wwAbk3SA2QeU67unN7zPxjEHmPmlXwZXZvQEpbEUQuMCRGgKyE1m6XDuTUA9b6pCGb/GqJmdfMOY5LuDjJSbbg==}
 
-  '@types/istanbul-lib-coverage@2.0.6':
-    resolution: {integrity: sha512-2QF/t/auWm0lsy8XtKVPG19v3sSOQlJe/YHZgfjb/KBBHOGSV+J2q/S671rcq9uTBrLAXmZpqJiaQbMT+zNU1w==}
-
-  '@types/istanbul-lib-report@3.0.3':
-    resolution: {integrity: sha512-NQn7AHQnk/RSLOxrBbGyJM/aVQ+pjj5HCgasFxc0K/KhoATfQ/47AyUl15I2yBUpihjmas+a+VJBOqecrFH+uA==}
-
-  '@types/istanbul-reports@3.0.4':
-    resolution: {integrity: sha512-pk2B1NWalF9toCRu6gjBzR69syFjP4Od8WRAX+0mmf9lAjCRicLOWc+ZrxZHx/0XRjotgkF9t6iaMJ+aXcOdZQ==}
-
-  '@types/jest@30.0.0':
-    resolution: {integrity: sha512-XTYugzhuwqWjws0CVz8QpM36+T+Dz5mTEBKhNs/esGLnCIlGdRy+Dq78NRjd7ls7r8BC8ZRMOrKlkO1hU0JOwA==}
-
   '@types/jsdom@28.0.3':
     resolution: {integrity: sha512-/HQ2uFoetFTXuye8vzIcHw2z6Fwi7Hi/qcgC+RoS9NCyewiqxhVGqlG+ViGB6lkax481R6dmhf1I7lIGlzJStQ==}
 
@@ -1732,9 +1647,6 @@ packages:
   '@types/resolve@1.20.2':
     resolution: {integrity: sha512-60BCwRFOZCQhDncwQdxxeOEEkbc5dIMccYLwbxsS4TUNeVECQ/pBJ0j09mrHOl/JJvpRPGwO9SvE4nR2Nb/a4Q==}
 
-  '@types/stack-utils@2.0.3':
-    resolution: {integrity: sha512-9aEbYZ3TbYMznPdcdr3SmIrLXwC/AKZXQeCf9Pgao5CKb8CyHuEX5jzWPTkvregvhRJHcpRO6BFoGW9ycaOkYw==}
-
   '@types/tough-cookie@4.0.5':
     resolution: {integrity: sha512-/Ad8+nIOV7Rl++6f1BdKxFSMgmoqEoYbHRpPcx3JEfv8VRsQe9Z4mCXeJBzxs7mbHY/XOZZuXlRNfhpVPbs6ZA==}
 
@@ -1744,12 +1656,6 @@ packages:
   '@types/validator@13.15.10':
     resolution: {integrity: sha512-T8L6i7wCuyoK8A/ZeLYt1+q0ty3Zb9+qbSSvrIVitzT3YjZqkTZ40IbRsPanlB4h1QB3JVL1SYCdR6ngtFYcuA==}
 
-  '@types/yargs-parser@21.0.3':
-    resolution: {integrity: sha512-I4q9QU9MQv4oEOz4tAHJtNz1cwuLxn2F3xcc2iV5WdqLPpUnj30aUuxt1mAxYTG+oe8CZMV/+6rU4S4gRDzqtQ==}
-
-  '@types/yargs@17.0.34':
-    resolution: {integrity: sha512-KExbHVa92aJpw9WDQvzBaGVE2/Pz+pLZQloT2hjL8IqsZnV62rlPOYvNnLmf/L2dyllfVUOVBj64M0z/46eR2A==}
-
   '@typeschema/class-validator@0.3.0':
     resolution: {integrity: sha512-OJSFeZDIQ8EK1HTljKLT5CItM2wsbgczLN8tMEfz3I1Lmhc5TBfkZ0eikFzUC16tI3d1Nag7um6TfCgp2I2Bww==}
     peerDependencies:
@@ -2030,18 +1936,6 @@ packages:
   ajv@8.20.0:
     resolution: {integrity: sha512-Thbli+OlOj+iMPYFBVBfJ3OmCAnaSyNn4M1vz9T6Gka5Jt9ba/HIR56joy65tY6kx/FCF5VXNB819Y7/GUrBGA==}
 
-  ansi-regex@5.0.1:
-    resolution: {integrity: sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==}
-    engines: {node: '>=8'}
-
-  ansi-styles@4.3.0:
-    resolution: {integrity: sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==}
-    engines: {node: '>=8'}
-
-  ansi-styles@5.2.0:
-    resolution: {integrity: sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==}
-    engines: {node: '>=10'}
-
   any-base@1.1.0:
     resolution: {integrity: sha512-uMgjozySS8adZZYePpaWs8cxB9/kdzmpX6SgJZ+wbz1K5eYk5QMYDVJaZKhxyIHUdnnJkfR7SVgStgH7LkGUyg==}
 
@@ -2060,17 +1954,10 @@ packages:
   argparse@2.0.1:
     resolution: {integrity: sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==}
 
-  aria-query@5.3.0:
-    resolution: {integrity: sha512-b0P0sZPKtyu8HkeRAfCq0IfURZK+SuwMjY1UXGBU27wpAiTwQAIlq56IbIO+ytk/JjS1fMR14ee5WBBfKi5J6A==}
-
   aria-query@5.3.1:
     resolution: {integrity: sha512-Z/ZeOgVl7bcSYZ/u/rh0fOpvEpq//LZmdbkXyc7syVzjPAhfOa9ebsdTSjEBDU4vs5nC98Kfduj1uFo0qyET3g==}
     engines: {node: '>= 0.4'}
 
-  aria-query@5.3.2:
-    resolution: {integrity: sha512-COROpnaoap1E2F000S62r6A60uHZnmlvomhfyT2DlTcrY1OrBKn2UhH7qn5wTC9zMvD0AY7csdPSNwKP+7WiQw==}
-    engines: {node: '>= 0.4'}
-
   arkregex@0.0.7:
     resolution: {integrity: sha512-O/Ltrn9EUSn3ui0KVzfyrWGDUsHlzKxDVBtpQxL/6JmLRMAZAebfSNf/A/J5Ny5S6QIwrXX+RfXsu888HMs35A==}
 
@@ -2180,10 +2067,6 @@ packages:
     resolution: {integrity: sha512-NUPRluOfOiTKBKvWPtSD4PhFvWCqOi0BGStNWs57X9js7XGTprSmFoz5F0tWhR4WPjNeR9jXqdC7/UpSJTnlRg==}
     engines: {node: '>=18'}
 
-  chalk@4.1.2:
-    resolution: {integrity: sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==}
-    engines: {node: '>=10'}
-
   chokidar@4.0.0:
     resolution: {integrity: sha512-mxIojEAQcuEvT/lyXq+jf/3cO/KoA6z4CeNDGGevTybECPOMFCnQy3OPahluUkbqgPNGw5Bi78UC7Po6Lhy+NA==}
     engines: {node: '>= 14.16.0'}
@@ -2196,10 +2079,6 @@ packages:
     resolution: {integrity: sha512-+IxzY9BZOQd/XuYPRmrvEVjF/nqj5kgT4kEq7VofrDoM1MxoRjEWkrCC3EtLi59TVawxTAn+orJwFQcrqEN1+g==}
     engines: {node: '>=18'}
 
-  ci-info@4.3.1:
-    resolution: {integrity: sha512-Wdy2Igu8OcBpI2pZePZ5oWjPC38tmDVx5WKUXKwlLYkA0ozo85sLsLvkBbBn/sZaSCMFOGZJ14fvW9t5/d7kdA==}
-    engines: {node: '>=8'}
-
   citty@0.1.6:
     resolution: {integrity: sha512-tskPPKEs8D2KPafUypv2gxwJP8h/OaJmC82QQGGDQcHvXX43xF2VDACcJVmZ0EuSxkpO9Kc4MlrA3q0+FG58AQ==}
 
@@ -2216,13 +2095,6 @@ packages:
   code-block-writer@10.1.1:
     resolution: {integrity: sha512-67ueh2IRGst/51p0n6FvPrnRjAGHY5F8xdjkgrYE7DDzpJe6qA07RYQ9VcoUeo5ATOjSOiWpSL3SWBRRbempMw==}
 
-  color-convert@2.0.1:
-    resolution: {integrity: sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==}
-    engines: {node: '>=7.0.0'}
-
-  color-name@1.1.4:
-    resolution: {integrity: sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==}
-
   commander@2.20.3:
     resolution: {integrity: sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==}
 
@@ -2259,9 +2131,6 @@ packages:
     resolution: {integrity: sha512-X7sjQzceUhu1u7Y/ylrRZFU2FS6LRiFVp6rKLPg23y3x3c3DOKAwuXGDp+PAGjh6CSnCjYeAul8pcT8bAl+lSA==}
     engines: {node: ^10 || ^12.20.0 || ^14.13.0 || >=15.0.0}
 
-  css.escape@1.5.1:
-    resolution: {integrity: sha512-YUifsXXuknHlUsmlgyY0PKzgPOr7/FjCePfHNt0jxm83wHZi44VDMQ7/fGNkjY3/jV1MC+1CmZbaHzugyeRtpg==}
-
   cssesc@3.0.0:
     resolution: {integrity: sha512-/Tb/JcjK111nNScGob5MNtsntNM1aCNUDipB/TkwZFhyDrrE47SOx/18wF2bbjgc3ZzCSKW1T5nt5EbFoAz/Vg==}
     engines: {node: '>=4'}
@@ -2331,10 +2200,6 @@ packages:
     resolution: {integrity: sha512-7emPTl6Dpo6JRXOXjLRxck+FlLRX5847cLKEn00PLAgc3g2hTZZgr+e4c2v6QpSmLeFP3n5yUo7ft6avBK/5jQ==}
     engines: {node: '>= 0.6'}
 
-  dequal@2.0.3:
-    resolution: {integrity: sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA==}
-    engines: {node: '>=6'}
-
   destr@2.0.5:
     resolution: {integrity: sha512-ugFTXCtDZunbzasqBxrK93Ik/DRYsO6S/fedkWEMKqt04xZ4csmnmwGDBAb07QWNaGMAmnTIemsYZCksjATwsA==}
 
@@ -2348,12 +2213,6 @@ packages:
   dlv@1.1.3:
     resolution: {integrity: sha512-+HlytyjlPKnIG8XuRG8WvmBP8xs8P71y+SKKS6ZXWoEgLuePxtDoUEiH7WkdePWrQ5JBpE6aoVqfZfJUQkjXwA==}
 
-  dom-accessibility-api@0.5.16:
-    resolution: {integrity: sha512-X7BJ2yElsnOJ30pZF4uIIDfBEVgF4XEBxL9Bxhy6dnrm5hkzqmsWHGTiHqRiITNhMyFLyAiWndIJP7Z1NTteDg==}
-
-  dom-accessibility-api@0.6.3:
-    resolution: {integrity: sha512-7ZgogeTnjuHbo+ct10G9Ffp0mif17idi0IyWNVA/wcwcm7NPOD/WEHVP3n7n3MhXqxoIYm8d6MuZohYWIZ4T3w==}
-
   dotenv@16.6.1:
     resolution: {integrity: sha512-uBq4egWHTcTt33a72vpSG0z3HnPuIl6NqYcTrKEg2azoEyl2hpW0zqlxysq2pK9HlDIHyHyakeYaYnSAwd8bow==}
     engines: {node: '>=12'}
@@ -2403,10 +2262,6 @@ packages:
     engines: {node: '>=18'}
     hasBin: true
 
-  escape-string-regexp@2.0.0:
-    resolution: {integrity: sha512-UpzcLCXolUWcNu5HtVMHYdXJjArjsF9C0aNnquZYY4uW/Vu0miy5YoWvbV345HauVvcAUnpRuhMMcqTcGOY2+w==}
-    engines: {node: '>=8'}
-
   escape-string-regexp@4.0.0:
     resolution: {integrity: sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==}
     engines: {node: '>=10'}
@@ -2533,10 +2388,6 @@ packages:
     resolution: {integrity: sha512-knvyeauYhqjOYvQ66MznSMs83wmHrCycNEN6Ao+2AeYEfxUIkuiVxdEa1qlGEPK+We3n0THiDciYSsCcgW/DoA==}
     engines: {node: '>=12.0.0'}
 
-  expect@30.2.0:
-    resolution: {integrity: sha512-u/feCi0GPsI+988gU2FLcsHyAHTU0MX1Wg68NhAnN7z/+C5wqG+CY8J53N9ioe8RXgaoz0nBR/TYMf3AycUuPw==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
   exsolve@1.0.8:
     resolution: {integrity: sha512-LmDxfWXwcTArk8fUEnOfSZpHOJ6zOMUJKOtFLFqJLoKJetuQG874Uc7/Kki7zFLzYybmZhp1M7+98pfMqeX8yA==}
 
@@ -2752,10 +2603,6 @@ packages:
     resolution: {integrity: sha512-JmXMZ6wuvDmLiHEml9ykzqO6lwFbof0GG4IkcGaENdCRDDmMVnny7s5HsIgHCbaq0w2MyPhDqkhTUgS2LU2PHA==}
     engines: {node: '>=0.8.19'}
 
-  indent-string@4.0.0:
-    resolution: {integrity: sha512-EdDDZu4A2OyIK7Lr/2zG+w5jmbuk1DVBnEwREQvBzspBJkCEbRa8GxU1lghYcaGJCnRWibjDXlq779X1/y5xwg==}
-    engines: {node: '>=8'}
-
   inherits@2.0.4:
     resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
 
@@ -2823,30 +2670,6 @@ packages:
     resolution: {integrity: sha512-HGYWWS/ehqTV3xN10i23tkPkpH46MLCIMFNCaaKNavAXTF1RkqxawEPtnjnGZ6XKSInBKkiOA5BKS+aZiY3AvA==}
     engines: {node: '>=8'}
 
-  jest-diff@30.2.0:
-    resolution: {integrity: sha512-dQHFo3Pt4/NLlG5z4PxZ/3yZTZ1C7s9hveiOj+GCN+uT109NC2QgsoVZsVOAvbJ3RgKkvyLGXZV9+piDpWbm6A==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  jest-matcher-utils@30.2.0:
-    resolution: {integrity: sha512-dQ94Nq4dbzmUWkQ0ANAWS9tBRfqCrn0bV9AMYdOi/MHW726xn7eQmMeRTpX2ViC00bpNaWXq+7o4lIQ3AX13Hg==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  jest-message-util@30.2.0:
-    resolution: {integrity: sha512-y4DKFLZ2y6DxTWD4cDe07RglV88ZiNEdlRfGtqahfbIjfsw1nMCPx49Uev4IA/hWn3sDKyAnSPwoYSsAEdcimw==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  jest-mock@30.2.0:
-    resolution: {integrity: sha512-JNNNl2rj4b5ICpmAcq+WbLH83XswjPbjH4T7yvGzfAGCPh1rw+xVNbtk+FnRslvt9lkCcdn9i1oAoKUuFsOxRw==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  jest-regex-util@30.0.1:
-    resolution: {integrity: sha512-jHEQgBXAgc+Gh4g0p3bCevgRCVRkB4VB70zhoAE48gxeSr1hfUOsM/C2WoJgVL7Eyg//hudYENbm3Ne+/dRVVA==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
-  jest-util@30.2.0:
-    resolution: {integrity: sha512-QKNsM0o3Xe6ISQU869e+DhG+4CK/48aHYdJZGlFQVTjnbvgpcKyxpzk29fGiO7i/J8VENZ+d2iGnSsvmuHywlA==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
   jiti@2.7.0:
     resolution: {integrity: sha512-AC/7JofJvZGrrneWNaEnJeOLUx+JlGt7tNa0wZiRPT4MY1wmfKjt2+6O2p2uz2+skll8OZZmJMNqeke7kKbNgQ==}
     hasBin: true
@@ -2863,9 +2686,6 @@ packages:
   js-tokens@10.0.0:
     resolution: {integrity: sha512-lM/UBzQmfJRo9ABXbPWemivdCW8V2G8FHaHdypQaIy523snUjog0W71ayWXTjiR+ixeMyVHN2XcpnTd/liPg/Q==}
 
-  js-tokens@4.0.0:
-    resolution: {integrity: sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==}
-
   js-yaml@4.3.0:
     resolution: {integrity: sha512-1td788aAnnZ5qs7V2QIRl1owjtYpbKt749Y3xauqQgwIIGF/xXWz1wMTEBx5O3LK3lXLVuqXPdPxj2BoFHaW9Q==}
     hasBin: true
@@ -3091,10 +2911,6 @@ packages:
     resolution: {integrity: sha512-vtEhXh/gNjI9Yg1u4jX/0YVPMvxzHuGgCm6tC5kZyb08yjGWGnqAjGJvcXbqQR2P3MyMEFnRbpcdFS6PBcLqew==}
     engines: {node: '>=12'}
 
-  lz-string@1.5.0:
-    resolution: {integrity: sha512-h5bgJWpxJNswbU7qCrV0tIKQCaS3blPDrqKWx+QxzuzL1zGUzij9XCWLrSLsJPu5t+eWA/ycetzYAO5IOMcWAQ==}
-    hasBin: true
-
   magic-string@0.30.21:
     resolution: {integrity: sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ==}
 
@@ -3139,10 +2955,6 @@ packages:
     resolution: {integrity: sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==}
     engines: {node: '>=6'}
 
-  min-indent@1.0.1:
-    resolution: {integrity: sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==}
-    engines: {node: '>=4'}
-
   mini-svg-data-uri@1.4.4:
     resolution: {integrity: sha512-r9deDe9p5FJUPZAk3A59wGH7Ii9YrjjWw0jmw/liSbHl2CHiyXj6FcDXDu2K3TjVAXqiJdaw3xxwlZZr9E6nHg==}
     hasBin: true
@@ -3516,14 +3328,6 @@ packages:
     engines: {node: '>=14'}
     hasBin: true
 
-  pretty-format@27.5.1:
-    resolution: {integrity: sha512-Qb1gy5OrP5+zDf2Bvnzdl3jsTf1qXVMazbvCoKhtKqVs4/YK4ozX4gKQJJVyNe+cajNPn0KoC0MC3FUmaHWEmQ==}
-    engines: {node: ^10.13.0 || ^12.13.0 || ^14.15.0 || >=15.0.0}
-
-  pretty-format@30.2.0:
-    resolution: {integrity: sha512-9uBdv/B4EefsuAL+pWqueZyZS2Ba+LxfFeQ9DN14HU4bN8bhaxKdkpjpB6fs9+pSjIBu+FXQHImEg8j/Lw0+vA==}
-    engines: {node: ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0}
-
   pretty-ms@7.0.1:
     resolution: {integrity: sha512-973driJZvxiGOQ5ONsFhOF/DtzPMOMtgC11kCpUrPGMTgqp2q/1gwzCquocrN33is0VZ5GFHXZYMM9l6h67v2Q==}
     engines: {node: '>=10'}
@@ -3581,20 +3385,10 @@ packages:
   rc9@2.1.2:
     resolution: {integrity: sha512-btXCnMmRIBINM2LDZoEmOogIZU7Qe7zn4BpomSKZ/ykbLObuBdvG+mFq11DL6fjH1DRwHhrlgtYWG96bJiC7Cg==}
 
-  react-is@17.0.2:
-    resolution: {integrity: sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==}
-
-  react-is@18.3.1:
-    resolution: {integrity: sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg==}
-
   readdirp@4.1.2:
     resolution: {integrity: sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==}
     engines: {node: '>= 14.18.0'}
 
-  redent@3.0.0:
-    resolution: {integrity: sha512-6tDA8g98We0zd0GvVeMT9arEOnTw9qM03L9cJXaCjrip1OO764RDBLBfrB4cwzNGDj5OA5ioymC9GkizgWJDUg==}
-    engines: {node: '>=8'}
-
   require-from-string@2.0.2:
     resolution: {integrity: sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==}
     engines: {node: '>=0.10.0'}
@@ -3718,10 +3512,6 @@ packages:
   sisteransi@1.0.5:
     resolution: {integrity: sha512-bLGGlR1QxBcynn2d5YmDX4MGjlZvy2MRBDRNHLJ8VI6l6+9FUiyTFNJ0IveOSP0bcXgVDPRcfGqA0pjaqUpfVg==}
 
-  slash@3.0.0:
-    resolution: {integrity: sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==}
-    engines: {node: '>=8'}
-
   smart-buffer@4.2.0:
     resolution: {integrity: sha512-94hK0Hh8rPqQl2xXc3HsaBoOXKV20MToPkcXvwbISWLEs+64sBq5kFgn2kJDHb1Pry9yrP0dxrCI9RRci7RXKg==}
     engines: {node: '>= 6.0.0', npm: '>= 3.0.0'}
@@ -3751,10 +3541,6 @@ packages:
     engines: {node: '>=20.16.0'}
     hasBin: true
 
-  stack-utils@2.0.6:
-    resolution: {integrity: sha512-XlkWvfIm6RmsWtNJx+uqtKLS8eqFbxUg0ZzLXqY0caEy9l7hruX8IpiDnjsLavoBgqCCR71TqWO8MaXYheJ3RQ==}
-    engines: {node: '>=10'}
-
   stackback@0.0.2:
     resolution: {integrity: sha512-1XMJE5fQo1jGH6Y/7ebnwPOBEkIEnT4QF32d5R1+VXdXveM0IBMJt8zfaxX1P3QhVwrYe+576+jkANtSS2mBbw==}
 
@@ -3785,10 +3571,6 @@ packages:
     resolution: {integrity: sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA==}
     engines: {node: '>=6'}
 
-  strip-indent@3.0.0:
-    resolution: {integrity: sha512-laJTa3Jb+VQpaC6DseHhF7dXVqHTfJPCRDaEbid/drOhgitgYku/letMUqOXFoWV0zIIUbjpdH2t+tYj4bQMRQ==}
-    engines: {node: '>=8'}
-
   strip-json-comments@3.1.1:
     resolution: {integrity: sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==}
     engines: {node: '>=8'}
@@ -4281,8 +4063,6 @@ packages:
 
 snapshots:
 
-  '@adobe/css-tools@4.4.4': {}
-
   '@ark/schema@0.56.1':
     dependencies:
       '@ark/util': 0.56.1
@@ -4311,12 +4091,6 @@ snapshots:
 
   '@asamuzakjp/nwsapi@2.3.9': {}
 
-  '@babel/code-frame@7.27.1':
-    dependencies:
-      '@babel/helper-validator-identifier': 7.29.7
-      js-tokens: 4.0.0
-      picocolors: 1.1.1
-
   '@babel/helper-string-parser@7.29.7': {}
 
   '@babel/helper-validator-identifier@7.29.7': {}
@@ -4325,7 +4099,8 @@ snapshots:
     dependencies:
       '@babel/types': 7.29.7
 
-  '@babel/runtime@7.29.2': {}
+  '@babel/runtime@7.29.2':
+    optional: true
 
   '@babel/types@7.29.7':
     dependencies:
@@ -4681,33 +4456,6 @@ snapshots:
     dependencies:
       minipass: 7.1.3
 
-  '@jest/diff-sequences@30.0.1': {}
-
-  '@jest/expect-utils@30.2.0':
-    dependencies:
-      '@jest/get-type': 30.1.0
-
-  '@jest/get-type@30.1.0': {}
-
-  '@jest/pattern@30.0.1':
-    dependencies:
-      '@types/node': 25.9.5
-      jest-regex-util: 30.0.1
-
-  '@jest/schemas@30.0.5':
-    dependencies:
-      '@sinclair/typebox': 0.34.41
-
-  '@jest/types@30.2.0':
-    dependencies:
-      '@jest/pattern': 30.0.1
-      '@jest/schemas': 30.0.5
-      '@types/istanbul-lib-coverage': 2.0.6
-      '@types/istanbul-reports': 3.0.4
-      '@types/node': 25.9.5
-      '@types/yargs': 17.0.34
-      chalk: 4.1.2
-
   '@jridgewell/gen-mapping@0.3.13':
     dependencies:
       '@jridgewell/sourcemap-codec': 1.5.5
@@ -5216,8 +4964,6 @@ snapshots:
 
   '@sinclair/typebox@0.25.24': {}
 
-  '@sinclair/typebox@0.34.41': {}
-
   '@standard-schema/spec@1.1.0': {}
 
   '@sveltejs/acorn-typescript@1.0.10(acorn@8.17.0)':
@@ -5338,39 +5084,6 @@ snapshots:
       tailwindcss: 4.3.2
       vite: 8.1.4(@types/node@25.9.5)(esbuild@0.28.1)(jiti@2.7.0)(tsx@4.23.1)
 
-  '@testing-library/dom@10.4.1':
-    dependencies:
-      '@babel/code-frame': 7.27.1
-      '@babel/runtime': 7.29.2
-      '@types/aria-query': 5.0.4
-      aria-query: 5.3.0
-      dom-accessibility-api: 0.5.16
-      lz-string: 1.5.0
-      picocolors: 1.1.1
-      pretty-format: 27.5.1
-
-  '@testing-library/jest-dom@6.9.1':
-    dependencies:
-      '@adobe/css-tools': 4.4.4
-      aria-query: 5.3.2
-      css.escape: 1.5.1
-      dom-accessibility-api: 0.6.3
-      picocolors: 1.1.1
-      redent: 3.0.0
-
-  '@testing-library/svelte-core@1.1.3(svelte@5.56.4(@typescript-eslint/types@8.63.0))':
-    dependencies:
-      svelte: 5.56.4(@typescript-eslint/types@8.63.0)
-
-  '@testing-library/svelte@5.4.2(svelte@5.56.4(@typescript-eslint/types@8.63.0))(vite@8.1.4(@types/node@25.9.5)(esbuild@0.28.1)(jiti@2.7.0)(tsx@4.23.1))(vitest@4.1.10)':
-    dependencies:
-      '@testing-library/dom': 10.4.1
-      '@testing-library/svelte-core': 1.1.3(svelte@5.56.4(@typescript-eslint/types@8.63.0))
-      svelte: 5.56.4(@typescript-eslint/types@8.63.0)
-    optionalDependencies:
-      vite: 8.1.4(@types/node@25.9.5)(esbuild@0.28.1)(jiti@2.7.0)(tsx@4.23.1)
-      vitest: 4.1.10(@edge-runtime/vm@3.2.0)(@types/node@25.9.5)(@vitest/coverage-v8@4.1.10)(@vitest/ui@4.1.10)(jsdom@29.1.1)(vite@8.1.4(@types/node@25.9.5)(esbuild@0.28.1)(jiti@2.7.0)(tsx@4.23.1))
-
   '@tootallnate/once@2.0.1': {}
 
   '@tootallnate/quickjs-emscripten@0.23.0': {}
@@ -5387,8 +5100,6 @@ snapshots:
       tslib: 2.8.1
     optional: true
 
-  '@types/aria-query@5.0.4': {}
-
   '@types/chai@5.2.3':
     dependencies:
       '@types/deep-eql': 4.0.2
@@ -5404,21 +5115,6 @@ snapshots:
 
   '@types/gtag.js@0.0.20': {}
 
-  '@types/istanbul-lib-coverage@2.0.6': {}
-
-  '@types/istanbul-lib-report@3.0.3':
-    dependencies:
-      '@types/istanbul-lib-coverage': 2.0.6
-
-  '@types/istanbul-reports@3.0.4':
-    dependencies:
-      '@types/istanbul-lib-report': 3.0.3
-
-  '@types/jest@30.0.0':
-    dependencies:
-      expect: 30.2.0
-      pretty-format: 30.2.0
-
   '@types/jsdom@28.0.3':
     dependencies:
       '@types/node': 25.9.5
@@ -5438,8 +5134,6 @@ snapshots:
 
   '@types/resolve@1.20.2': {}
 
-  '@types/stack-utils@2.0.3': {}
-
   '@types/tough-cookie@4.0.5': {}
 
   '@types/trusted-types@2.0.7': {}
@@ -5447,12 +5141,6 @@ snapshots:
   '@types/validator@13.15.10':
     optional: true
 
-  '@types/yargs-parser@21.0.3': {}
-
-  '@types/yargs@17.0.34':
-    dependencies:
-      '@types/yargs-parser': 21.0.3
-
   '@typeschema/class-validator@0.3.0(@types/json-schema@7.0.15)(class-validator@0.14.4)':
     dependencies:
       '@typeschema/core': 0.14.0(@types/json-schema@7.0.15)
@@ -6014,14 +5702,6 @@ snapshots:
       json-schema-traverse: 1.0.0
       require-from-string: 2.0.2
 
-  ansi-regex@5.0.1: {}
-
-  ansi-styles@4.3.0:
-    dependencies:
-      color-convert: 2.0.1
-
-  ansi-styles@5.2.0: {}
-
   any-base@1.1.0: {}
 
   any-promise@1.3.0: {}
@@ -6034,14 +5714,8 @@ snapshots:
 
   argparse@2.0.1: {}
 
-  aria-query@5.3.0:
-    dependencies:
-      dequal: 2.0.3
-
   aria-query@5.3.1: {}
 
-  aria-query@5.3.2: {}
-
   arkregex@0.0.7:
     dependencies:
       '@ark/util': 0.56.1
@@ -6137,11 +5811,6 @@ snapshots:
 
   chai@6.2.2: {}
 
-  chalk@4.1.2:
-    dependencies:
-      ansi-styles: 4.3.0
-      supports-color: 7.2.0
-
   chokidar@4.0.0:
     dependencies:
       readdirp: 4.1.2
@@ -6152,8 +5821,6 @@ snapshots:
 
   chownr@3.0.0: {}
 
-  ci-info@4.3.1: {}
-
   citty@0.1.6:
     dependencies:
       consola: 3.4.2
@@ -6171,12 +5838,6 @@ snapshots:
 
   code-block-writer@10.1.1: {}
 
-  color-convert@2.0.1:
-    dependencies:
-      color-name: 1.1.4
-
-  color-name@1.1.4: {}
-
   commander@2.20.3: {}
 
   concat-map@0.0.1: {}
@@ -6204,8 +5865,6 @@ snapshots:
       mdn-data: 2.27.1
       source-map-js: 1.2.1
 
-  css.escape@1.5.1: {}
-
   cssesc@3.0.0: {}
 
   cssfilter@0.0.10: {}
@@ -6252,8 +5911,6 @@ snapshots:
 
   depd@1.1.2: {}
 
-  dequal@2.0.3: {}
-
   destr@2.0.5: {}
 
   detect-libc@2.1.2: {}
@@ -6263,10 +5920,6 @@ snapshots:
   dlv@1.1.3:
     optional: true
 
-  dom-accessibility-api@0.5.16: {}
-
-  dom-accessibility-api@0.6.3: {}
-
   dotenv@16.6.1: {}
 
   edge-runtime@2.5.9:
@@ -6367,8 +6020,6 @@ snapshots:
       '@esbuild/win32-ia32': 0.28.1
       '@esbuild/win32-x64': 0.28.1
 
-  escape-string-regexp@2.0.0: {}
-
   escape-string-regexp@4.0.0: {}
 
   escodegen@2.1.0:
@@ -6535,15 +6186,6 @@ snapshots:
 
   expect-type@1.3.0: {}
 
-  expect@30.2.0:
-    dependencies:
-      '@jest/expect-utils': 30.2.0
-      '@jest/get-type': 30.1.0
-      jest-matcher-utils: 30.2.0
-      jest-message-util: 30.2.0
-      jest-mock: 30.2.0
-      jest-util: 30.2.0
-
   exsolve@1.0.8: {}
 
   fast-check@3.23.2:
@@ -6778,8 +6420,6 @@ snapshots:
 
   imurmurhash@0.1.4: {}
 
-  indent-string@4.0.0: {}
-
   inherits@2.0.4: {}
 
   ip-address@10.2.0: {}
@@ -6831,49 +6471,6 @@ snapshots:
       html-escaper: 2.0.2
       istanbul-lib-report: 3.0.1
 
-  jest-diff@30.2.0:
-    dependencies:
-      '@jest/diff-sequences': 30.0.1
-      '@jest/get-type': 30.1.0
-      chalk: 4.1.2
-      pretty-format: 30.2.0
-
-  jest-matcher-utils@30.2.0:
-    dependencies:
-      '@jest/get-type': 30.1.0
-      chalk: 4.1.2
-      jest-diff: 30.2.0
-      pretty-format: 30.2.0
-
-  jest-message-util@30.2.0:
-    dependencies:
-      '@babel/code-frame': 7.27.1
-      '@jest/types': 30.2.0
-      '@types/stack-utils': 2.0.3
-      chalk: 4.1.2
-      graceful-fs: 4.2.11
-      micromatch: 4.0.8
-      pretty-format: 30.2.0
-      slash: 3.0.0
-      stack-utils: 2.0.6
-
-  jest-mock@30.2.0:
-    dependencies:
-      '@jest/types': 30.2.0
-      '@types/node': 25.9.5
-      jest-util: 30.2.0
-
-  jest-regex-util@30.0.1: {}
-
-  jest-util@30.2.0:
-    dependencies:
-      '@jest/types': 30.2.0
-      '@types/node': 25.9.5
-      chalk: 4.1.2
-      ci-info: 4.3.1
-      graceful-fs: 4.2.11
-      picomatch: 4.0.4
-
   jiti@2.7.0: {}
 
   joi@17.13.4:
@@ -6891,8 +6488,6 @@ snapshots:
 
   js-tokens@10.0.0: {}
 
-  js-tokens@4.0.0: {}
-
   js-yaml@4.3.0:
     dependencies:
       argparse: 2.0.1
@@ -7084,8 +6679,6 @@ snapshots:
 
   luxon@3.7.2: {}
 
-  lz-string@1.5.0: {}
-
   magic-string@0.30.21:
     dependencies:
       '@jridgewell/sourcemap-codec': 1.5.5
@@ -7127,8 +6720,6 @@ snapshots:
 
   mimic-fn@2.1.0: {}
 
-  min-indent@1.0.1: {}
-
   mini-svg-data-uri@1.4.4: {}
 
   minimatch@10.2.5:
@@ -7428,18 +7019,6 @@ snapshots:
 
   prettier@3.9.5: {}
 
-  pretty-format@27.5.1:
-    dependencies:
-      ansi-regex: 5.0.1
-      ansi-styles: 5.2.0
-      react-is: 17.0.2
-
-  pretty-format@30.2.0:
-    dependencies:
-      '@jest/schemas': 30.0.5
-      ansi-styles: 5.2.0
-      react-is: 18.3.1
-
   pretty-ms@7.0.1:
     dependencies:
       parse-ms: 2.1.0
@@ -7506,17 +7085,8 @@ snapshots:
       defu: 6.1.7
       destr: 2.0.5
 
-  react-is@17.0.2: {}
-
-  react-is@18.3.1: {}
-
   readdirp@4.1.2: {}
 
-  redent@3.0.0:
-    dependencies:
-      indent-string: 4.0.0
-      strip-indent: 3.0.0
-
   require-from-string@2.0.2: {}
 
   resolve-from@4.0.0: {}
@@ -7657,8 +7227,6 @@ snapshots:
 
   sisteransi@1.0.5: {}
 
-  slash@3.0.0: {}
-
   smart-buffer@4.2.0: {}
 
   smol-toml@1.7.0: {}
@@ -7683,10 +7251,6 @@ snapshots:
 
   srvx@0.11.16: {}
 
-  stack-utils@2.0.6:
-    dependencies:
-      escape-string-regexp: 2.0.0
-
   stackback@0.0.2: {}
 
   stat-mode@0.3.0: {}
@@ -7718,10 +7282,6 @@ snapshots:
 
   strip-final-newline@2.0.0: {}
 
-  strip-indent@3.0.0:
-    dependencies:
-      min-indent: 1.0.1
-
   strip-json-comments@3.1.1: {}
 
   super-sitemap@1.0.12(svelte@5.56.4(@typescript-eslint/types@8.63.0)):
diff --git a/src/features/tasks/stores/active_contest_type.svelte.test.ts b/src/features/tasks/stores/active_contest_type.svelte.test.ts
index c1dc22941..90967b826 100644
--- a/src/features/tasks/stores/active_contest_type.svelte.test.ts
+++ b/src/features/tasks/stores/active_contest_type.svelte.test.ts
@@ -1,3 +1,5 @@
+// @vitest-environment jsdom
+
 import { describe, test, expect, vi, beforeEach, afterEach } from 'vitest';
 
 import type { ContestTableProviderGroups } from '$features/tasks/utils/contest-table/contest_table_provider';
@@ -6,40 +8,35 @@ import {
   ActiveContestTypeStore,
 } from '$features/tasks/stores/active_contest_type.svelte';
 
+// WHY: a single dynamic mock is the only way to toggle `browser` per describe. Every vi.mock is
+// hoisted and the last registration for a module wins, so a second vi.mock of `$app/environment`
+// would silently clamp the whole file to one branch.
+// Defaults to false so the singleton constructed at import time stays SSR-safe (no localStorage).
+const browserState = vi.hoisted(() => ({ value: false }));
+
 vi.mock('$app/environment', () => ({
-  browser: true,
+  get browser() {
+    return browserState.value;
+  },
 }));
 
+const localStorageKey = 'contest_table_providers';
+
+afterEach(() => {
+  localStorage.clear();
+});
+
 describe('ActiveContestTypeStore', () => {
   let store: ActiveContestTypeStore;
 
-  const mockLocalStorage: Storage = {
-    getItem: vi.fn((key) => mockStorage[key] || null),
-    setItem: vi.fn((key, value) => {
-      mockStorage[key] = value;
-    }),
-    removeItem: vi.fn(),
-    clear: vi.fn(),
-    length: 0,
-    key: vi.fn(),
-  };
-  const mockStorage: Record<string, string> = {};
-
   beforeEach(() => {
-    vi.clearAllMocks();
-    // Clear mockStorage before each test
-    Object.keys(mockStorage).forEach((key) => delete mockStorage[key]);
-    // Setup mock for localStorage
-    vi.stubGlobal('localStorage', mockLocalStorage);
+    browserState.value = true;
+    localStorage.clear();
 
     store = new ActiveContestTypeStore();
     store.reset();
   });
 
-  afterEach(() => {
-    vi.unstubAllGlobals();
-  });
-
   test('expects to initialize with default value', () => {
     expect(store.get()).toBe('abs');
   });
@@ -60,6 +57,17 @@ describe('ActiveContestTypeStore', () => {
     expect(store.get()).toBe('abc319Onwards');
   });
 
+  test('expects to persist the value in localStorage when calling set()', () => {
+    store.set('abc319Onwards' as ContestTableProviderGroups);
+    expect(localStorage.getItem(localStorageKey)).toBe(JSON.stringify('abc319Onwards'));
+  });
+
+  test('expects to restore the value persisted in localStorage', () => {
+    localStorage.setItem(localStorageKey, JSON.stringify('fromAbc212ToAbc318'));
+
+    expect(new ActiveContestTypeStore().get()).toBe('fromAbc212ToAbc318');
+  });
+
   test('expects to correctly determine if contest type is the same with isSame()', () => {
     expect(store.isSame('abs' as ContestTableProviderGroups)).toBe(true);
     expect(store.isSame('abc319Onwards' as ContestTableProviderGroups)).toBe(false);
@@ -94,15 +102,21 @@ describe('ActiveContestTypeStore', () => {
   });
 
   test('expects to reset to default when initialized with invalid localStorage key', () => {
-    // Simulate invalid key in localStorage
-    mockStorage['contest_table_providers'] = JSON.stringify('invalidContestType');
+    localStorage.setItem(localStorageKey, JSON.stringify('invalidContestType'));
+
+    const newStore = new ActiveContestTypeStore();
+    expect(newStore.get()).toBe('abs');
+  });
+
+  test('expects to reset to default when localStorage holds invalid JSON', () => {
+    localStorage.setItem(localStorageKey, 'invalid-json');
 
     const newStore = new ActiveContestTypeStore();
     expect(newStore.get()).toBe('abs');
   });
 
   test('expects to reset to default when initialized with null', () => {
-    mockStorage['contest_table_providers'] = JSON.stringify(null);
+    localStorage.setItem(localStorageKey, JSON.stringify(null));
 
     const newStore = new ActiveContestTypeStore();
     expect(newStore.get()).toBe('abs');
@@ -124,17 +138,24 @@ describe('ActiveContestTypeStore', () => {
 
 describe('Active contest type store in SSR', () => {
   beforeEach(() => {
-    vi.restoreAllMocks();
-    vi.mock('$app/environment', () => ({
-      browser: false,
-    }));
+    browserState.value = false;
   });
 
-  afterEach(() => {
-    vi.restoreAllMocks();
+  test('expects to ignore localStorage and initialize with default value', () => {
+    localStorage.setItem(localStorageKey, JSON.stringify('abc319Onwards'));
+
+    expect(new ActiveContestTypeStore().get()).toBe('abs');
+  });
+
+  test('expects not to persist the value in localStorage when calling set()', () => {
+    const store = new ActiveContestTypeStore();
+    store.set('abc319Onwards' as ContestTableProviderGroups);
+
+    expect(store.get()).toBe('abc319Onwards');
+    expect(localStorage.getItem(localStorageKey)).toBeNull();
   });
 
-  test('handles SSR gracefully', () => {
+  test('expects the singleton constructed at import time to hold the default value', () => {
     expect(activeContestTypeStore.get()).toBe('abs');
   });
 });
diff --git a/src/features/workbooks/stores/replenishment_workbook.svelte.ts b/src/features/workbooks/stores/replenishment_workbook.svelte.ts
index 9cf790e25..6eb7fa62c 100644
--- a/src/features/workbooks/stores/replenishment_workbook.svelte.ts
+++ b/src/features/workbooks/stores/replenishment_workbook.svelte.ts
@@ -7,7 +7,7 @@ import { browser } from '$app/environment';
 // https://svelte.dev/docs/svelte/$state
 const IS_SHOWN_REPLENISHMENT_WORKBOOKS = 'is_shown_replenishment_workbooks';
 
-class ReplenishmentWorkBooksStore {
+export class ReplenishmentWorkBooksStore {
   private isShown = $state<boolean>(this.loadInitialState());
 
   // Note:
diff --git a/src/features/workbooks/stores/replenishment_workbook.test.ts b/src/features/workbooks/stores/replenishment_workbook.test.ts
index 8dcbff159..cbba5d863 100644
--- a/src/features/workbooks/stores/replenishment_workbook.test.ts
+++ b/src/features/workbooks/stores/replenishment_workbook.test.ts
@@ -1,36 +1,40 @@
-import { expect, test, vi, type Mock } from 'vitest';
+// @vitest-environment jsdom
 
-import { replenishmentWorkBooksStore } from '$features/workbooks/stores/replenishment_workbook.svelte';
+import { describe, test, expect, vi, beforeEach, afterEach } from 'vitest';
+
+import {
+  replenishmentWorkBooksStore,
+  ReplenishmentWorkBooksStore,
+} from '$features/workbooks/stores/replenishment_workbook.svelte';
+
+// WHY: a single dynamic mock is the only way to toggle `browser` per describe. Every vi.mock is
+// hoisted and the last registration for a module wins, so a second vi.mock of `$app/environment`
+// would silently clamp the whole file to one branch.
+// Defaults to false so the singleton constructed at import time stays SSR-safe (no localStorage).
+const browserState = vi.hoisted(() => ({ value: false }));
 
 vi.mock('$app/environment', () => ({
-  browser: true,
+  get browser() {
+    return browserState.value;
+  },
 }));
 
-describe('Replenishment workbooks store', () => {
-  const localStorageKey = 'is_shown_replenishment_workbooks';
-  const mockLocalStorage: Storage = {
-    getItem: vi.fn(),
-    setItem: vi.fn(),
-    removeItem: vi.fn(),
-    clear: vi.fn(),
-    length: 0,
-    key: vi.fn(),
-  };
+const localStorageKey = 'is_shown_replenishment_workbooks';
+
+afterEach(() => {
+  localStorage.clear();
+});
 
+describe('Replenishment workbooks store', () => {
   beforeEach(() => {
-    vi.clearAllMocks();
-    // Setup mock for localStorage
-    vi.stubGlobal('localStorage', mockLocalStorage);
+    browserState.value = true;
+    localStorage.clear();
 
     replenishmentWorkBooksStore.reset();
   });
 
-  afterEach(() => {
-    vi.unstubAllGlobals();
-  });
-
   test('expects to be invisible before toggling', () => {
-    expect(replenishmentWorkBooksStore.canView()).toBeFalsy();
+    expect(replenishmentWorkBooksStore.canView()).toBe(false);
   });
 
   test.each([
@@ -45,30 +49,47 @@ describe('Replenishment workbooks store', () => {
     expect(replenishmentWorkBooksStore.canView()).toBe(expected);
   });
 
-  // Note: This test is skipped because it is not possible to mock localStorage in JSDOM.
-  test.skip('persists state in localStorage', () => {
-    (mockLocalStorage.getItem as Mock).mockReturnValue(JSON.stringify(false));
+  test('expects to persist state in localStorage', () => {
+    replenishmentWorkBooksStore.toggleView();
+    expect(localStorage.getItem(localStorageKey)).toBe(JSON.stringify(true));
 
     replenishmentWorkBooksStore.toggleView();
+    expect(localStorage.getItem(localStorageKey)).toBe(JSON.stringify(false));
+  });
 
-    expect(mockLocalStorage.setItem).toHaveBeenCalledTimes(1);
-    expect(mockLocalStorage.setItem).toHaveBeenCalledWith(localStorageKey, JSON.stringify(true));
+  test('expects to be invisible when localStorage holds no state', () => {
+    expect(new ReplenishmentWorkBooksStore().canView()).toBe(false);
   });
 
-  test('handles invalid localStorage data', () => {
+  test('expects to restore the state persisted in localStorage', () => {
+    localStorage.setItem(localStorageKey, JSON.stringify(true));
+
+    expect(new ReplenishmentWorkBooksStore().canView()).toBe(true);
+  });
+
+  test('expects to be invisible when localStorage data is invalid', () => {
     localStorage.setItem(localStorageKey, 'invalid-json');
-    expect(replenishmentWorkBooksStore.canView()).toBeFalsy();
+
+    expect(new ReplenishmentWorkBooksStore().canView()).toBe(false);
   });
 });
 
 describe('Replenishment workbooks store in SSR', () => {
   beforeEach(() => {
-    vi.mock('$app/environment', () => ({
-      browser: false,
-    }));
+    browserState.value = false;
   });
 
-  test('handles SSR gracefully', () => {
-    expect(replenishmentWorkBooksStore.canView()).toBeFalsy();
+  test('expects to ignore localStorage and be invisible', () => {
+    localStorage.setItem(localStorageKey, JSON.stringify(true));
+
+    expect(new ReplenishmentWorkBooksStore().canView()).toBe(false);
+  });
+
+  test('expects not to persist state in localStorage when toggling', () => {
+    const store = new ReplenishmentWorkBooksStore();
+    store.toggleView();
+
+    expect(store.canView()).toBe(true);
+    expect(localStorage.getItem(localStorageKey)).toBeNull();
   });
 });
diff --git a/src/test/lib/stores/active_problem_list_tab.svelte.test.ts b/src/test/lib/stores/active_problem_list_tab.svelte.test.ts
index 6af9f0f4a..288edc478 100644
--- a/src/test/lib/stores/active_problem_list_tab.svelte.test.ts
+++ b/src/test/lib/stores/active_problem_list_tab.svelte.test.ts
@@ -1,42 +1,41 @@
-import { describe, test, expect, vi, beforeEach } from 'vitest';
+// @vitest-environment jsdom
+
+import { describe, test, expect, vi, beforeEach, afterEach } from 'vitest';
 
 import {
   activeProblemListTabStore,
   ActiveProblemListTabStore,
 } from '$lib/stores/active_problem_list_tab.svelte';
 
+// WHY: a single dynamic mock is the only way to toggle `browser` per describe. Every vi.mock is
+// hoisted and the last registration for a module wins, so a second vi.mock of `$app/environment`
+// would silently clamp the whole file to one branch.
+// Defaults to false so the singleton constructed at import time stays SSR-safe (no localStorage).
+const browserState = vi.hoisted(() => ({ value: false }));
+
 vi.mock('$app/environment', () => ({
-  browser: true,
+  get browser() {
+    return browserState.value;
+  },
 }));
 
+const localStorageKey = 'active_problem_list_tab';
+
+afterEach(() => {
+  localStorage.clear();
+});
+
 describe('ActiveProblemListTabStore', () => {
   let store: ActiveProblemListTabStore;
 
-  const mockLocalStorage: Storage = {
-    getItem: vi.fn((key) => mockStorage[key] || null),
-    setItem: vi.fn((key, value) => {
-      mockStorage[key] = value;
-    }),
-    removeItem: vi.fn(),
-    clear: vi.fn(),
-    length: 0,
-    key: vi.fn(),
-  };
-  const mockStorage: Record<string, string> = {};
-
   beforeEach(() => {
-    vi.clearAllMocks();
-    // Setup mock for localStorage
-    vi.stubGlobal('localStorage', mockLocalStorage);
+    browserState.value = true;
+    localStorage.clear();
 
     store = new ActiveProblemListTabStore();
     store.reset();
   });
 
-  afterEach(() => {
-    vi.unstubAllGlobals();
-  });
-
   describe('constructor', () => {
     test('expects to initialize with default value', () => {
       expect(store.get()).toBe('contestTable');
@@ -46,6 +45,12 @@ describe('ActiveProblemListTabStore', () => {
       const customStore = new ActiveProblemListTabStore('listByGrade');
       expect(customStore.get()).toBe('listByGrade');
     });
+
+    test('expects to restore the value persisted in localStorage', () => {
+      localStorage.setItem(localStorageKey, JSON.stringify('gradeGuidelineTable'));
+
+      expect(new ActiveProblemListTabStore().get()).toBe('gradeGuidelineTable');
+    });
   });
 
   describe('get', () => {
@@ -62,6 +67,11 @@ describe('ActiveProblemListTabStore', () => {
       store.set('gradeGuidelineTable');
       expect(store.get()).toBe('gradeGuidelineTable');
     });
+
+    test('expects to persist the active tab in localStorage', () => {
+      store.set('listByGrade');
+      expect(localStorage.getItem(localStorageKey)).toBe(JSON.stringify('listByGrade'));
+    });
   });
 
   describe('isSame', () => {
@@ -90,17 +100,16 @@ describe('ActiveProblemListTabStore', () => {
 
 describe('Active problem list tab store in SSR', () => {
   beforeEach(() => {
-    vi.restoreAllMocks();
-    vi.mock('$app/environment', () => ({
-      browser: false,
-    }));
+    browserState.value = false;
   });
 
-  afterEach(() => {
-    vi.restoreAllMocks();
+  test('expects to ignore localStorage and initialize with default value', () => {
+    localStorage.setItem(localStorageKey, JSON.stringify('listByGrade'));
+
+    expect(new ActiveProblemListTabStore().get()).toBe('contestTable');
   });
 
-  test('handles SSR gracefully', () => {
+  test('expects the singleton constructed at import time to hold the default value', () => {
     expect(activeProblemListTabStore.get()).toBe('contestTable');
   });
 });
diff --git a/vite.config.ts b/vite.config.ts
index 65227f17c..f1c220a99 100755
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -22,7 +22,8 @@ export default defineConfig({
       'dist/**',
       'node_modules/**',
     ],
-    environment: 'jsdom',
+    // Default to node; DOM-dependent tests opt in via `// @vitest-environment jsdom`.
+    environment: 'node',
     globals: true,
     coverage: {
       provider: 'v8',