Checkpoint: Ajout de la page de gestion des attestations de formation

Fonctionnalités :
- Configuration par formation (génération auto/manuel, envoi auto/manuel)
- Affichage de la liste des apprenants inscrits
- Upload de documents PDF par apprenant (mode manuel)
- Boutons de prévisualisation et d'envoi manuel
- Gestion complète des attestations

Corrections :
- Ajout des colonnes modeAttestation et modeEnvoi dans la table formations
- Ajout des colonnes documentUrl, documentS3Key, uploadedBy, uploadedAt, emailEnvoye, dateEnvoiEmail dans la table attestations
- Correction de l'erreur SQL en retirant la colonne urlPdf inexistante de la requête

.manus/db/db-query-1768248607421.json

@@ -0,0 +1,122 @@
+{
+  "query": "SHOW COLUMNS FROM attestations;",
+  "command": "mysql --batch --raw --column-names --default-character-set=utf8mb4 --host gateway02.us-east-1.prod.aws.tidbcloud.com --port 4000 --user 4CrrYuB5tme73Qo.root --database 7PAT67UmWoxv8vwp8Bbcv6 --execute SHOW COLUMNS FROM attestations;",
+  "rows": [
+    {
+      "Field": "id",
+      "Type": "int(11)",
+      "Null": "NO",
+      "Key": "PRI",
+      "Default": "NULL",
+      "Extra": "auto_increment"
+    },
+    {
+      "Field": "inscriptionId",
+      "Type": "int(11)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "apprenantId",
+      "Type": "int(11)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "sequenceId",
+      "Type": "int(11)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "s3Key",
+      "Type": "varchar(500)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "pdfUrl",
+      "Type": "varchar(1000)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "dateGeneration",
+      "Type": "timestamp",
+      "Null": "NO",
+      "Key": "",
+      "Default": "CURRENT_TIMESTAMP",
+      "Extra": ""
+    },
+    {
+      "Field": "emailEnvoye",
+      "Type": "tinyint(1)",
+      "Null": "NO",
+      "Key": "",
+      "Default": "0",
+      "Extra": ""
+    },
+    {
+      "Field": "dateEnvoiEmail",
+      "Type": "timestamp",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "createdAt",
+      "Type": "timestamp",
+      "Null": "NO",
+      "Key": "",
+      "Default": "CURRENT_TIMESTAMP",
+      "Extra": ""
+    },
+    {
+      "Field": "documentUrl",
+      "Type": "varchar(500)",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "documentS3Key",
+      "Type": "varchar(500)",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "uploadedBy",
+      "Type": "int(11)",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    },
+    {
+      "Field": "uploadedAt",
+      "Type": "timestamp",
+      "Null": "YES",
+      "Key": "",
+      "Default": "NULL",
+      "Extra": ""
+    }
+  ],
+  "messages": [],
+  "stdout": "Field\tType\tNull\tKey\tDefault\tExtra\nid\tint(11)\tNO\tPRI\tNULL\tauto_increment\ninscriptionId\tint(11)\tNO\t\tNULL\t\napprenantId\tint(11)\tNO\t\tNULL\t\nsequenceId\tint(11)\tNO\t\tNULL\t\ns3Key\tvarchar(500)\tNO\t\tNULL\t\npdfUrl\tvarchar(1000)\tNO\t\tNULL\t\ndateGeneration\ttimestamp\tNO\t\tCURRENT_TIMESTAMP\t\nemailEnvoye\ttinyint(1)\tNO\t\t0\t\ndateEnvoiEmail\ttimestamp\tYES\t\tNULL\t\ncreatedAt\ttimestamp\tNO\t\tCURRENT_TIMESTAMP\t\ndocumentUrl\tvarchar(500)\tYES\t\tNULL\t\ndocumentS3Key\tvarchar(500)\tYES\t\tNULL\t\nuploadedBy\tint(11)\tYES\t\tNULL\t\nuploadedAt\ttimestamp\tYES\t\tNULL\t\n",
+  "stderr": "",
+  "execution_time_ms": 67
+}