feat: setup frontend con pnpm, vite, react, tailwind y shadcn

Inicializa directorio frontend/ con stack React moderno:
pnpm + vite 8 + react 19 + tailwind v4 + shadcn v4 (base-nova).
Estructura functions/core (TS puro) y functions/ui (componentes React).
El indexer descubre frontend/functions/ y frontend/types/ automáticamente.
Elimina functions/components/ (legacy) y actualiza referencias en
CLAUDE.md y template de componentes.

frontend/node_modules/.pnpm-workspace-state-v1.json

@@ -0,0 +1,25 @@
+{
+  "lastValidatedTimestamp": 1774725979364,
+  "projects": {},
+  "pnpmfiles": [],
+  "settings": {
+    "autoInstallPeers": true,
+    "dedupeDirectDeps": false,
+    "dedupeInjectedDeps": true,
+    "dedupePeerDependents": true,
+    "dev": true,
+    "excludeLinksFromLockfile": false,
+    "hoistPattern": [
+      "*"
+    ],
+    "hoistWorkspacePackages": true,
+    "injectWorkspacePackages": false,
+    "linkWorkspacePackages": false,
+    "nodeLinker": "isolated",
+    "optional": true,
+    "preferWorkspacePackages": false,
+    "production": true,
+    "publicHoistPattern": []
+  },
+  "filteredInstall": false
+}