feat(Login): add example jwt token

src/components/Login.vue

@@ -0,0 +1,42 @@
+<script setup>
+  import { ref } from 'vue';
+  import AuthService from '@/services/auth';
+  import { inject } from 'vue';
+
+  const username = ref('');
+  const password = ref('');
+  const error = ref('');
+
+  async function login() {
+    try {
+      await AuthService.login({ username: username.value, password: password.value });
+      // opcional: redirigir al dashboard
+    } catch (e) {
+      error.value = e.message;
+    }
+  }
+
+  // ejemplo de llamada a clientes (requiere token)
+  const api = inject('api');
+
+  async function loadCustomers() {
+    try {
+      const data = await api.getCustomers();
+      console.log(data);
+    } catch (e) {
+      console.error(e);
+    }
+  }
+</script>
+
+<template>
+  <h1>Login</h1>
+  <v-form @submit.prevent="login">
+    <v-text-field v-model="username" label="Usuario" required />
+    <v-text-field v-model="password" label="Contraseña" type="password" required />
+    <v-btn type="submit">Entrar</v-btn>
+    <v-alert v-if="error" type="error">{{ error }}</v-alert>
+  </v-form>
+
+  <v-btn @click="loadCustomers">Cargar clientes</v-btn>
+</template>