feat: implementacion de dashboards por rol, soporte de clases virtuales concurrentes en importador de sheets y cartelera del dia

backend/app/forms/auth.py

@@ -0,0 +1,17 @@
+from flask_wtf import FlaskForm
+from wtforms import StringField, PasswordField, BooleanField, SubmitField
+from wtforms.validators import DataRequired, Email, Length
+from flask_babel import lazy_gettext as _l
+
+class LoginForm(FlaskForm):
+    email = StringField(_l('Email'), 
+        validators=[
+            DataRequired(),
+            Email(),
+            Length(max=120)
+        ],
+        filters=[lambda x: x.strip().lower() if x else '']
+    )
+    password = PasswordField(_l('Password'), validators=[DataRequired()])
+    remember_me = BooleanField(_l('Remember me'))
+    submit = SubmitField(_l('Sign In'))