Add update scripts

update_mods.bat

@@ -0,0 +1,49 @@
+@echo off
+setlocal EnableDelayedExpansion
+
+set "REPO_URL=https://zerolands.duckdns.org/git/D3SXX/Minecraft-Server-1.21.1-Mods.git"
+set "BRANCH=main"
+
+:: ─── Check / install git ─────────────────────────────────────────────────────
+where git >nul 2>&1
+if %errorlevel% neq 0 (
+    echo git not found. Installing via winget...
+    winget install --id Git.Git -e --source winget
+    if %errorlevel% neq 0 (
+        echo ERROR: winget failed to install git. Install git manually and re-run.
+        pause
+        exit /b 1
+    )
+    :: Reload PATH so git is available in the same session
+    for /f "tokens=*" %%i in ('where git 2^>nul') do set "GIT_EXE=%%i"
+    if "!GIT_EXE!"=="" (
+        echo git was installed but is not yet on PATH. Please restart this script.
+        pause
+        exit /b 1
+    )
+)
+
+:: ─── Move to the directory containing this script ────────────────────────────
+cd /d "%~dp0"
+
+:: ─── Initialise repo if .git is missing ──────────────────────────────────────
+if not exist ".git\" (
+    echo Initialising git repository...
+    git init
+    git remote add origin "%REPO_URL%"
+) else (
+    git remote set-url origin "%REPO_URL%" 2>nul || git remote add origin "%REPO_URL%"
+)
+
+:: ─── Full reset ────────────────────────────────
+echo Fetching latest mods from %REPO_URL% ...
+git fetch --all --prune
+
+echo Resetting to origin/%BRANCH% ...
+git checkout -B "%BRANCH%" "origin/%BRANCH%" --
+git reset --hard "origin/%BRANCH%"
+git clean -fd
+
+echo.
+echo Mods updated successfully.
+pause