🔧 update CI workflow to use 'deno check' and improve Lua setup

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
           deno-version: v2
 
       - name: Deno lint frontend
-        run: cd frontend && deno lint main.ts
+        run: cd frontend && deno check
         continue-on-error: true
 
   build:
@@ -107,9 +107,10 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Setup Lua
+        uses: leafo/gh-actions-lua@v12
+
+      - name: Setup LuaRocks
         uses: leafo/gh-actions-luarocks@v6
-        with:
-          lua-version: "5.4"
 
       - name: Install dependencies
         run: |