feat(saas): métriques ML + TEST_MODE + compte test pro

- portal_server.py: enregistre metrics_bp (/api/v1/metrics)
- api_v1/routes/metrics.py: switch vers saas_auth.require_auth (compat token opaque)
- dashboard_saas.html: onglet Métriques (KPIs + Chart.js ROI/précision/cumul + table daily)
- dashboard_saas.html: TEST_MODE=true -> plan level pro pour toutes les fonctionnalités
- turf_saas.db: compte admin@h3r7.ai / Test1234! plan=pro (test)

portal_server.py

@@ -19,9 +19,13 @@ SAAS_DIR = "/home/h3r7/turf_saas"
 try:
     from saas_auth import auth_bp
     from saas_api_v1 import api_v1_bp
+    from api_v1.routes.ml_feedback import ml_feedback_bp
+    from api_v1.routes.metrics import metrics_bp
 
     app.register_blueprint(auth_bp)
     app.register_blueprint(api_v1_bp)
+    app.register_blueprint(ml_feedback_bp)
+    app.register_blueprint(metrics_bp)
     print("[portal] SaaS auth & API v1 blueprints registered ✅")
 except Exception as e:
     print(f"[portal] Warning: could not register SaaS blueprints: {e}")