bug fix:

Manager ne pouvait pas voir les tryouts.
probleme avec discord bot

app/models/tryout/tryout.py

@@ -1,5 +1,6 @@
 """Tryout event for player evaluations and team formation."""
 from app.extensions import db
+from app.models._associations import tryout_coaches
 from datetime import datetime
 
 
@@ -18,12 +19,13 @@ class Tryout(db.Model):
     created_by = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
     target_org_team_id = db.Column(db.Integer, db.ForeignKey('org_teams.id'), nullable=True)
     manager_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)
-    coach_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)
+    coach_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)  # deprecated, kept for migration
     created_at = db.Column(db.DateTime, default=datetime.utcnow)
 
     creator = db.relationship('User', foreign_keys=[created_by], backref='created_tryouts')
     manager = db.relationship('User', foreign_keys=[manager_id], backref='managed_tryouts')
-    coach = db.relationship('User', foreign_keys=[coach_id], backref='coached_tryouts')
+    coach = db.relationship('User', foreign_keys=[coach_id], backref='_deprecated_coached_tryouts')
+    coaches = db.relationship('User', secondary=tryout_coaches, backref='coached_tryouts')
     registrations = db.relationship('TryoutRegistration', backref='tryout', lazy='dynamic')
     evaluations = db.relationship('Evaluation', backref='tryout', lazy='dynamic')
     teams = db.relationship('Team', backref='tryout', lazy='dynamic')