chore(tickets): clôture #165 #166 + épic #161 — sync miroir tickets

#165 (seam plugin slash-commands) et #166 (dispatch e2e du callback plugin)
fermés après merge de feature/165-plugin-slash-commands dans develop.
L'épic #161 (commandes slash custom CLI) est entièrement terminé : tous ses
sous-tickets (#162 fondation, #163 autocomplete, #164 /profile, #165 seam
plugin) plus le dispatch e2e (#166) sont intégrés.
Sync du miroir local + counter (#166 créé).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.ideai/tickets/index.json

@@ -2115,14 +2115,14 @@
       "issueRef": "#161",
       "path": "161",
       "title": "Epic: commandes IdeA slash dans la custom CLI",
-      "status": "open",
+      "status": "closed",
       "priority": "medium",
       "sprint": null,
       "assignedAgentIds": [],
       "createdBy": {
         "kind": "user"
       },
-      "updatedAt": 1786018356404
+      "updatedAt": 1786024054225
     },
     {
       "issueRef": "#162",
@@ -2177,7 +2177,7 @@
       "issueRef": "#165",
       "path": "165",
       "title": "SDK/plugins: allow plugins to contribute custom CLI slash commands",
-      "status": "open",
+      "status": "closed",
       "priority": "medium",
       "sprint": null,
       "assignedAgentIds": [
@@ -2188,7 +2188,23 @@
         "kind": "agent",
         "agent_id": "a6c6ea12-bfc6-4bdc-8031-324102dfa34d"
       },
-      "updatedAt": 1786018356463
+      "updatedAt": 1786024054225
+    },
+    {
+      "issueRef": "#166",
+      "path": "166",
+      "title": "Custom CLI: dispatch plugin slash-command callback effects",
+      "status": "closed",
+      "priority": "high",
+      "sprint": null,
+      "assignedAgentIds": [
+        "8f7da528-58df-4315-97e9-0562230ecc19"
+      ],
+      "createdBy": {
+        "kind": "agent",
+        "agent_id": "a6c6ea12-bfc6-4bdc-8031-324102dfa34d"
+      },
+      "updatedAt": 1786024054225
     }
   ]
 }