chore(wip): consolidation intermédiaire multi-tickets (sprints Statistiques, UI, Bug resolution, Serveur-client)

Regroupe l'état de travail en cours réalisé dans un même worktree sur
plusieurs tickets/sprints (#85, #136, #145, #155-160, #162-164),
mélangeant des tickets QA et inProgress. Ne constitue pas une feature
terminée : commit de sauvegarde avant triage/split par ticket en
branches feature/* dédiées. Exclut les dossiers d'environnement de
build locaux et le heap dump parasite (.gitignore mis à jour).

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

.ideai/sprints/2c0dd1ea-8809-49ff-adc1-aa8820815ee7/sprint.md

@@ -0,0 +1,11 @@
+---
+id: "2c0dd1ea-8809-49ff-adc1-aa8820815ee7"
+order: 4
+name: "Statistiques"
+status: "planned"
+createdBy: {"kind":"user"}
+updatedBy: {"kind":"user"}
+createdAt: 1785242698414
+updatedAt: 1785242698414
+version: 1
+---

.ideai/sprints/d5c18b44-0eec-46db-b8ab-506cfee0bfea/sprint.md

@@ -0,0 +1,11 @@
+---
+id: "d5c18b44-0eec-46db-b8ab-506cfee0bfea"
+order: 5
+name: "UI"
+status: "planned"
+createdBy: {"kind":"user"}
+updatedBy: {"kind":"user"}
+createdAt: 1785242709608
+updatedAt: 1785242709608
+version: 1
+---

.ideai/sprints/index.json

@@ -27,6 +27,24 @@
       "status": "planned",
       "updatedAt": 1784482336164,
       "version": 1
+    },
+    {
+      "id": "2c0dd1ea-8809-49ff-adc1-aa8820815ee7",
+      "path": "2c0dd1ea-8809-49ff-adc1-aa8820815ee7",
+      "order": 4,
+      "name": "Statistiques",
+      "status": "planned",
+      "updatedAt": 1785242698414,
+      "version": 1
+    },
+    {
+      "id": "d5c18b44-0eec-46db-b8ab-506cfee0bfea",
+      "path": "d5c18b44-0eec-46db-b8ab-506cfee0bfea",
+      "order": 5,
+      "name": "UI",
+      "status": "planned",
+      "updatedAt": 1785242709608,
+      "version": 1
     }
   ]
 }