feat(i18n & ux): auditoria, traduccion completa, correcciones ux y gestion de idioma en perfil

app/routes/auth.py

@@ -25,6 +25,10 @@ def login():
             login_user(user, remember=form.remember_me.data)
             user.update_last_login()
             
+            # Si el usuario tiene idioma configurado en su perfil, sobrescribe el navegador en toda la sesión
+            if user.preferred_language and user.preferred_language in ['es', 'en']:
+                session['language'] = user.preferred_language
+            
             next_page = request.args.get('next')
             if not next_page or not next_page.startswith('/'):
                 next_page = url_for('main.dashboard')
@@ -41,15 +45,26 @@ def login():
 def logout():
     """Handle user logout"""
     logout_user()
+    # Al cerrar sesión, se limpia el idioma para que el login use el del navegador por defecto
+    session.pop('language', None)
     flash('You have been logged out successfully.', 'info')
     return redirect(url_for('auth.login'))
 
-@auth_bp.route('/profile')
+@auth_bp.route('/profile', methods=['GET', 'POST'])
 @login_required
 def profile():
     """User profile page"""
+    if request.method == 'POST':
+        lang = request.form.get('preferred_language')
+        if lang in ['es', 'en']:
+            current_user.preferred_language = lang
+            session['language'] = lang
+            db.session.commit()
+            flash('Idioma de preferencia actualizado correctamente.', 'success')
+        return redirect(url_for('auth.profile'))
     return render_template('auth/profile.html')
 
+
 @auth_bp.route('/change_password', methods=['GET', 'POST'])
 @login_required
 def change_password():

app/routes/classrooms.py

@@ -52,6 +52,7 @@ def add_classroom():
     
     return render_template('classrooms/add.html', form=form, title='Add Classroom')
 
+@classrooms_bp.route('/', endpoint='index')
 @classrooms_bp.route('/list')
 @login_required 
 def list_classrooms():

app/routes/main.py

@@ -1,5 +1,6 @@
 from flask import Blueprint, render_template, jsonify, redirect, url_for, session, request, flash
 from flask_login import login_required, current_user
+from app import db
 from app.models.reservation import Reservation
 from app.models.classroom import Classroom
 from app.models.subject import Subject
@@ -124,4 +125,8 @@ def set_language(language=None):
         language = 'en'
     
     session['language'] = language
+    if current_user.is_authenticated:
+        current_user.preferred_language = language
+        db.session.commit()
+        
     return redirect(request.referrer or url_for('main.dashboard'))