diff --git a/database/models/universign.py b/database/models/universign.py
index 8b34ba3..fcb0ffa 100644
--- a/database/models/universign.py
+++ b/database/models/universign.py
@@ -50,7 +50,7 @@ class LocalDocumentStatus(str, Enum):
 
 class SageDocumentType(int, Enum):
     DEVIS = 0
-    BON_COMMANDE = 10 
+    BON_COMMANDE = 10
     PREPARATION = 20
     BON_LIVRAISON = 30
     BON_RETOUR = 40
@@ -61,8 +61,7 @@ class SageDocumentType(int, Enum):
 class UniversignTransaction(Base):
     __tablename__ = "universign_transactions"
 
-    # === IDENTIFIANTS ===
-    id = Column(String(36), primary_key=True)  # UUID local
+    id = Column(String(36), primary_key=True)
     transaction_id = Column(
         String(255),
         unique=True,
@@ -71,7 +70,6 @@ class UniversignTransaction(Base):
         comment="ID Universign (ex: tr_abc123)",
     )
 
-    # === LIEN AVEC LE DOCUMENT SAGE ===
     sage_document_id = Column(
         String(50),
         nullable=False,
@@ -82,7 +80,6 @@ class UniversignTransaction(Base):
         SQLEnum(SageDocumentType), nullable=False, comment="Type de document Sage"
     )
 
-    # === STATUTS UNIVERSIGN (SOURCE DE VÉRITÉ) ===
     universign_status = Column(
         SQLEnum(UniversignTransactionStatus),
         nullable=False,
@@ -94,7 +91,6 @@ class UniversignTransaction(Base):
         DateTime, nullable=True, comment="Dernière MAJ du statut Universign"
     )
 
-    # === STATUT LOCAL (DÉDUIT) ===
     local_status = Column(
         SQLEnum(LocalDocumentStatus),
         nullable=False,
@@ -103,7 +99,6 @@ class UniversignTransaction(Base):
         comment="Statut métier simplifié pour l'UI",
     )
 
-    # === URLS ET MÉTADONNÉES UNIVERSIGN ===
     signer_url = Column(Text, nullable=True, comment="URL de signature")
     document_url = Column(Text, nullable=True, comment="URL du document signé")
 
@@ -125,17 +120,14 @@ class UniversignTransaction(Base):
 
     certificate_url = Column(Text, nullable=True, comment="URL du certificat")
 
-    # === SIGNATAIRES ===
     signers_data = Column(
         Text, nullable=True, comment="JSON des signataires (snapshot)"
     )
 
-    # === INFORMATIONS MÉTIER ===
     requester_email = Column(String(255), nullable=True)
     requester_name = Column(String(255), nullable=True)
     document_name = Column(String(500), nullable=True)
 
-    # === DATES CLÉS ===
     created_at = Column(
         DateTime,
         default=datetime.now,
@@ -150,14 +142,12 @@ class UniversignTransaction(Base):
     expired_at = Column(DateTime, nullable=True)
     canceled_at = Column(DateTime, nullable=True)
 
-    # === SYNCHRONISATION ===
     last_synced_at = Column(
         DateTime, nullable=True, comment="Dernière sync réussie avec Universign"
     )
     sync_attempts = Column(Integer, default=0, comment="Nombre de tentatives de sync")
     sync_error = Column(Text, nullable=True)
 
-    # === FLAGS ===
     is_test = Column(
         Boolean, default=False, comment="Transaction en environnement .alpha"
     )
@@ -166,7 +156,6 @@ class UniversignTransaction(Base):
     )
     webhook_received = Column(Boolean, default=False, comment="Webhook Universign reçu")
 
-    # === RELATION ===
     signers = relationship(
         "UniversignSigner", back_populates="transaction", cascade="all, delete-orphan"
     )
@@ -174,7 +163,6 @@ class UniversignTransaction(Base):
         "UniversignSyncLog", back_populates="transaction", cascade="all, delete-orphan"
     )
 
-    # === INDEXES COMPOSITES ===
     __table_args__ = (
         Index("idx_sage_doc", "sage_document_id", "sage_document_type"),
         Index("idx_sync_status", "needs_sync", "universign_status"),
@@ -190,10 +178,6 @@ class UniversignTransaction(Base):
 
 
 class UniversignSigner(Base):
-    """
-    Détail de chaque signataire d'une transaction
-    """
-
     __tablename__ = "universign_signers"
 
     id = Column(String(36), primary_key=True)
@@ -204,33 +188,27 @@ class UniversignSigner(Base):
         index=True,
     )
 
-    # === DONNÉES SIGNATAIRE ===
     email = Column(String(255), nullable=False, index=True)
     name = Column(String(255), nullable=True)
     phone = Column(String(50), nullable=True)
 
-    # === STATUT ===
     status = Column(
         SQLEnum(UniversignSignerStatus),
         default=UniversignSignerStatus.WAITING,
         nullable=False,
     )
 
-    # === ACTIONS ===
     viewed_at = Column(DateTime, nullable=True)
     signed_at = Column(DateTime, nullable=True)
     refused_at = Column(DateTime, nullable=True)
     refusal_reason = Column(Text, nullable=True)
 
-    # === MÉTADONNÉES ===
     ip_address = Column(String(45), nullable=True)
     user_agent = Column(Text, nullable=True)
     signature_method = Column(String(50), nullable=True)
 
-    # === ORDRE ===
     order_index = Column(Integer, default=0)
 
-    # === RELATION ===
     transaction = relationship("UniversignTransaction", back_populates="signers")
 
     def __repr__(self):
@@ -238,10 +216,6 @@ class UniversignSigner(Base):
 
 
 class UniversignSyncLog(Base):
-    """
-    Journal de toutes les synchronisations (audit trail)
-    """
-
     __tablename__ = "universign_sync_logs"
 
     id = Column(Integer, primary_key=True, autoincrement=True)
@@ -252,22 +226,18 @@ class UniversignSyncLog(Base):
         index=True,
     )
 
-    # === SYNC INFO ===
     sync_type = Column(String(50), nullable=False, comment="webhook, polling, manual")
     sync_timestamp = Column(DateTime, default=datetime.now, nullable=False, index=True)
 
-    # === CHANGEMENTS DÉTECTÉS ===
     previous_status = Column(String(50), nullable=True)
     new_status = Column(String(50), nullable=True)
     changes_detected = Column(Text, nullable=True, comment="JSON des changements")
 
-    # === RÉSULTAT ===
     success = Column(Boolean, default=True)
     error_message = Column(Text, nullable=True)
     http_status_code = Column(Integer, nullable=True)
     response_time_ms = Column(Integer, nullable=True)
 
-    # === RELATION ===
     transaction = relationship("UniversignTransaction", back_populates="sync_logs")
 
     def __repr__(self):
@@ -287,7 +257,6 @@ class UniversignConfig(Base):
     api_url = Column(String(500), nullable=False)
     api_key = Column(String(500), nullable=False, comment="À chiffrer")
 
-    # === OPTIONS ===
     webhook_url = Column(String(500), nullable=True)
     webhook_secret = Column(String(255), nullable=True)