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/.bin/tsserver

@@ -0,0 +1,21 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -z "$NODE_PATH" ]; then
+  export NODE_PATH="/home/lucas/fn_registry/frontend/node_modules/.pnpm/typescript@6.0.2/node_modules/typescript/bin/node_modules:/home/lucas/fn_registry/frontend/node_modules/.pnpm/typescript@6.0.2/node_modules/typescript/node_modules:/home/lucas/fn_registry/frontend/node_modules/.pnpm/typescript@6.0.2/node_modules:/home/lucas/fn_registry/frontend/node_modules/.pnpm/node_modules"
+else
+  export NODE_PATH="/home/lucas/fn_registry/frontend/node_modules/.pnpm/typescript@6.0.2/node_modules/typescript/bin/node_modules:/home/lucas/fn_registry/frontend/node_modules/.pnpm/typescript@6.0.2/node_modules/typescript/node_modules:/home/lucas/fn_registry/frontend/node_modules/.pnpm/typescript@6.0.2/node_modules:/home/lucas/fn_registry/frontend/node_modules/.pnpm/node_modules:$NODE_PATH"
+fi
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../.pnpm/typescript@6.0.2/node_modules/typescript/bin/tsserver" "$@"
+else
+  exec node  "$basedir/../.pnpm/typescript@6.0.2/node_modules/typescript/bin/tsserver" "$@"
+fi