Implement Session Persistence: 'Keep me logged in' now works by toggling between localStorage and sessionStorage based on user choice

frontend/src/stores/auth.ts

@@ -35,12 +35,22 @@ export const useAuthStore = defineStore('auth', () => {
         }
     })
 
-    async function login(email: string, pass: string) {
+    async function login(email: string, pass: string, keepSession: boolean = false) {
         const { data, error } = await supabase.auth.signInWithPassword({ email, password: pass })
         if (error) throw new Error(error.message)
 
         if (data.user) {
-            // Rol disponible al instante desde el JWT — sin consultas BD bloqueantes
+            // Manejo de persistencia: Si el usuario NO quiere mantener sesión iniciada,
+            // movemos el token de localStorage a sessionStorage.
+            if (!keepSession) {
+                const storageKey = `sb-bjgixlugjzsccazdfmph-auth-token`
+                const sessionData = localStorage.getItem(storageKey)
+                if (sessionData) {
+                    sessionStorage.setItem(storageKey, sessionData)
+                    localStorage.removeItem(storageKey)
+                }
+            }
+
             userSession.value = data.session
             userProfile.value = {
                 id: data.user.id,