diff --git a/.ideai/sprints/1bb8bdf2-9c35-4f53-9a31-1390a47bec63/sprint.md b/.ideai/sprints/1bb8bdf2-9c35-4f53-9a31-1390a47bec63/sprint.md
new file mode 100644
index 0000000..85b50ce
--- /dev/null
+++ b/.ideai/sprints/1bb8bdf2-9c35-4f53-9a31-1390a47bec63/sprint.md
@@ -0,0 +1,11 @@
+---
+id: "1bb8bdf2-9c35-4f53-9a31-1390a47bec63"
+order: 2
+name: "Exercice editor enhancement"
+status: "planned"
+createdBy: {"kind":"user"}
+updatedBy: {"kind":"user"}
+createdAt: 1784449859008
+updatedAt: 1784449859008
+version: 1
+---
diff --git a/.ideai/sprints/index.json b/.ideai/sprints/index.json
index c12a843..f6734fb 100644
--- a/.ideai/sprints/index.json
+++ b/.ideai/sprints/index.json
@@ -9,6 +9,15 @@
       "status": "planned",
       "updatedAt": 1784329015766,
       "version": 1
+    },
+    {
+      "id": "1bb8bdf2-9c35-4f53-9a31-1390a47bec63",
+      "path": "1bb8bdf2-9c35-4f53-9a31-1390a47bec63",
+      "order": 2,
+      "name": "Exercice editor enhancement",
+      "status": "planned",
+      "updatedAt": 1784449859008,
+      "version": 1
     }
   ]
 }
\ No newline at end of file
diff --git a/.ideai/tickets/50/carnet.md b/.ideai/tickets/50/carnet.md
index 3e46a85..b684b25 100644
--- a/.ideai/tickets/50/carnet.md
+++ b/.ideai/tickets/50/carnet.md
@@ -1,6 +1,7 @@
 ---
 issueRef: "#50"
-version: 1
-updatedBy: {"kind":"agent","agent_id":"f8f40941-ecf7-4830-b9de-8818a099f448"}
-updatedAt: 1784412001974
+version: 3
+updatedBy: {"kind":"agent","agent_id":"57695b92-24d0-4876-837c-76116e70a6ae"}
+updatedAt: 1784449447058
 ---
+Endpoints `POST /sync/push`, `GET /sync/pull`, `POST /sync/exchange` implémentés, protégés par le middleware Bearer. LWW rendu atomique côté SQL (CTE `INSERT ... ON CONFLICT ... WHERE client_updated_at < EXCLUDED.client_updated_at` + fallback pour `ignoredOlder`), relu manuellement et jugé correct. Tests unitaires avec fakes en mémoire verts (15/15), `dart analyze` clean. Non vérifié : aucun test de bout en bout contre un vrai PostgreSQL (pas d'accès Docker dans le sandbox Main). À faire avant mise en prod : une fois #52 livré, tester `push`/`pull`/`exchange` via curl contre le serveur réel + vérifier la concurrence de l'upsert LWW sous charge.
\ No newline at end of file
diff --git a/.ideai/tickets/50/issue.md b/.ideai/tickets/50/issue.md
index ba2c8c9..af63bcb 100644
--- a/.ideai/tickets/50/issue.md
+++ b/.ideai/tickets/50/issue.md
@@ -2,15 +2,15 @@
 id: "983aa02b-7577-4fde-b77a-12355df0efdb"
 number: 50
 title: "[Server] API de synchronisation incrémentale LWW"
-status: "open"
+status: "qa"
 priority: "low"
 sprint: null
 links: [{"target":"#46","kind":"relatesTo"},{"target":"#48","kind":"dependsOn"},{"target":"#49","kind":"dependsOn"}]
 agentRefs: []
 createdBy: {"kind":"agent","agent_id":"f8f40941-ecf7-4830-b9de-8818a099f448"}
-updatedBy: {"kind":"agent","agent_id":"f8f40941-ecf7-4830-b9de-8818a099f448"}
+updatedBy: {"kind":"agent","agent_id":"57695b92-24d0-4876-837c-76116e70a6ae"}
 createdAt: 1784412001974
-updatedAt: 1784412001974
-version: 1
+updatedAt: 1784449447058
+version: 3
 ---
 Implémenter les ports/use cases et endpoints de sync incrémentale authentifiée. Endpoints : `POST /sync/push`, `GET /sync/pull?since=...`, optionnel `POST /sync/exchange`. Stratégie v1 last-write-wins basée sur `clientUpdatedAt` puis tie-breaker `serverUpdatedAt`/`serverId`. Supporter upsert, soft delete, réponses par item (`accepted`, `ignoredOlder`, `conflictLwwApplied`, `error`) et cursor serveur monotone. Ne pas intégrer le client Flutter dans ce ticket.
\ No newline at end of file
diff --git a/.ideai/tickets/54/carnet.md b/.ideai/tickets/54/carnet.md
new file mode 100644
index 0000000..e385c35
--- /dev/null
+++ b/.ideai/tickets/54/carnet.md
@@ -0,0 +1,6 @@
+---
+issueRef: "#54"
+version: 2
+updatedBy: {"kind":"user"}
+updatedAt: 1784449895057
+---
diff --git a/.ideai/tickets/54/issue.md b/.ideai/tickets/54/issue.md
new file mode 100644
index 0000000..dd1ad52
--- /dev/null
+++ b/.ideai/tickets/54/issue.md
@@ -0,0 +1,15 @@
+---
+id: "7e6894d5-36ad-413b-9fda-be3ba26db6cb"
+number: 54
+title: "Exercice à plusieurs étapes"
+status: "open"
+priority: "medium"
+sprint: "1bb8bdf2-9c35-4f53-9a31-1390a47bec63"
+links: []
+agentRefs: []
+createdBy: {"kind":"user"}
+updatedBy: {"kind":"user"}
+createdAt: 1784449895047
+updatedAt: 1784449895057
+version: 2
+---
diff --git a/.ideai/tickets/counter.json b/.ideai/tickets/counter.json
index fadf2d9..5db1edc 100644
--- a/.ideai/tickets/counter.json
+++ b/.ideai/tickets/counter.json
@@ -1,3 +1,3 @@
 {
-  "nextNumber": 54
+  "nextNumber": 55
 }
\ No newline at end of file
diff --git a/.ideai/tickets/index.json b/.ideai/tickets/index.json
index 3f650fb..e4fec3a 100644
--- a/.ideai/tickets/index.json
+++ b/.ideai/tickets/index.json
@@ -567,11 +567,11 @@
       "issueRef": "#50",
       "path": "50",
       "title": "[Server] API de synchronisation incrémentale LWW",
-      "status": "open",
+      "status": "qa",
       "priority": "low",
       "sprint": null,
       "assignedAgentIds": [],
-      "updatedAt": 1784412001974
+      "updatedAt": 1784449447058
     },
     {
       "issueRef": "#51",
@@ -602,6 +602,16 @@
       "sprint": null,
       "assignedAgentIds": [],
       "updatedAt": 1784412015509
+    },
+    {
+      "issueRef": "#54",
+      "path": "54",
+      "title": "Exercice à plusieurs étapes",
+      "status": "open",
+      "priority": "medium",
+      "sprint": "1bb8bdf2-9c35-4f53-9a31-1390a47bec63",
+      "assignedAgentIds": [],
+      "updatedAt": 1784449895057
     }
   ]
 }
\ No newline at end of file