Initial commit: mini-erp (backend FastAPI + frontend React/Vite)

Base para el flujo de ramas por cliente.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

mini-backend/menu_permissions.json

@@ -0,0 +1,22 @@
+{
+  "renato.ortega@tagumedica.com": [
+    "*"
+  ],
+  "rodrigo.catari@tagumedica.com": [
+    "/inventario/*"
+  ],
+  "jose.huayta@tagumedica.com": [
+    "/inventario/articulos",
+    "/ventas/*",
+    "/compras/*"
+  ],
+  "ricardo.merino@tagumedica.com": [
+    "/socios/*"
+  ],
+  "renato.bustamante@tagumedica.com": [
+    "/inventario/articulos",
+    "/inventario/lotes",
+    "/ventas/*",
+    "/compras/*"
+  ]
+}