Update modpack to Minecraft 26.1.2 and add server-side datapack sync

- Update Minecraft version from **26.1.1** to **26.1.2**
- Add **LambDynamicLights** mod for dynamic lighting effects
- Update **Appleskin** mod compatibility for 26.1.2
- Add CLIENT-side mod export configuration for server pack
- Document datapack synchronization tasks for server deployment
- Move recipe tuning TODO to a dedicated **Datapacks** section

pakku.json

@@ -4,5 +4,13 @@
     "author": "dimti",
     "overrides": [
         "config"
-    ]
-}
+    ],
+    "projects": {
+        "lambdynamiclights": {
+            "side": "BOTH"
+        },
+        "xaeros-world-map": {
+            "side": "BOTH"
+        }
+    }
+}