fix(audit): centraliser l'horloge UTC

app/routes/team_matches.py

@@ -3,8 +3,6 @@
 Uses polymorphic isinstance checks instead of role-string comparisons.
 """
 
-from datetime import datetime
-
 from flask import Blueprint, flash, jsonify, redirect, render_template, request, url_for
 from flask_babel import gettext as _
 from flask_login import current_user, login_required
@@ -27,6 +25,7 @@ from app.pagination import paginate
 from app.permissions import can_manage_org_team, coach_org_teams, visible_org_teams
 from app.routes.matches import default_end_time
 from app.services.scheduling import notify_participants, zip_participants
+from app.time_utils import utc_now_naive
 from app.validators import TeamMatchSchema
 
 team_matches_bp = Blueprint('team_matches', __name__, url_prefix='/team-matches')
@@ -100,7 +99,7 @@ def list_matches():
         teams=teams,
         match_data=match_data,
         pagination=matches_page,
-        now=datetime.utcnow(),
+        now=utc_now_naive(),
     )