feat(安装系统): 添加应用启动器并更新安装路径

添加新的应用启动器程序(app.lua)用于从/app目录运行应用
将包安装路径从/rom改为/app目录
更新安装器版本号至0.3.6 Beta 2
确保/app目录在安装过程中自动创建

data/computercraft/lua/rom/programs/app.lua

@@ -0,0 +1,51 @@
+-- app.lua - Application launcher for LeonOS
+
+local function show_help()
+  print("Usage: app <program_name> [arguments]")
+  print("Runs an application from the /app directory")
+  print("")
+  print("Options:")
+  print("  --help, -h    Show this help message")
+end
+
+local function main(args)
+  if #args == 0 or args[1] == "--help" or args[1] == "-h" then
+    show_help()
+    return
+  end
+
+  local program_name = args[1]
+  local program_args = {}
+  
+  -- 提取程序参数
+  for i=2, #args do
+    table.insert(program_args, args[i])
+  end
+  
+  -- 构建程序路径
+  local program_path = fs.combine("/app", program_name)
+  
+  -- 检查程序是否存在
+  if not fs.exists(program_path) then
+    -- 尝试添加.lua扩展名
+    program_path = program_path .. ".lua"
+    if not fs.exists(program_path) then
+      print("Error: Application '" .. args[1] .. "' not found in /app directory")
+      return
+    end
+  end
+  
+  -- 运行程序
+  print("Running application: " .. program_name)
+  local success, error_msg = pcall(function()
+    shell.run(program_path, table.unpack(program_args))
+  end)
+  
+  if not success then
+    print("Error running application: " .. error_msg)
+  end
+end
+
+-- 运行主函数
+local args = {...}
+main(args)