launcher: exiger Java 25 (servermeta javaOptions + distribution.json)

La config serveur declare desormais javaOptions (TEMURIN, supported
>=25.x, suggestedMajor 25) au lieu du defaut Helios 21 pour MC >= 1.20.5.
Le launcher exigera/detectera Java 25 et telechargera Temurin 25.x depuis
Adoptium si absent. Genere via `npm run faststart -- generate distro`.

atlas/root/distribution.json

@@ -11,6 +11,11 @@
       "minecraftVersion": "26.3",
       "mainServer": true,
       "autoconnect": true,
+      "javaOptions": {
+        "distribution": "TEMURIN",
+        "supported": ">=25.x",
+        "suggestedMajor": 25
+      },
       "modules": [
         {
           "id": "net.fabricmc:fabric-loader:0.20.0",

atlas/root/servers/SurviePote-26.3/servermeta.json

@@ -7,7 +7,12 @@
     "icon": "https://git.kisakay.com/k/mc/raw/branch/main/atlas/root/servers/SurviePote-26.3/SurviePote-26.3.png",
     "address": "mcpv.ihorizon.org:25565",
     "mainServer": true,
-    "autoconnect": true
+    "autoconnect": true,
+    "javaOptions": {
+      "distribution": "TEMURIN",
+      "supported": ">=25.x",
+      "suggestedMajor": 25
+    }
   },
   "fabric": {
     "version": "0.20.0"