feat(commands): 添加列出所有可用命令的功能

实现一个commands命令用于列出LeonOS中所有可用的程序命令，支持--help和--verbose选项

data/computercraft/lua/rom/programs/commands.lua

@@ -0,0 +1,64 @@
+-- commands.lua: List all available commands
+local shell = require("shell")
+local fs = require("fs")
+
+-- 帮助信息函数
+local function printHelp()
+  print("Usage: commands [options]")
+  print("Options:")
+  print("  --help, -h    Show this help message")
+  print("  --verbose, -v Show command file paths")
+  print("
+Lists all available commands in LeonOS.")
+end
+
+-- 主函数
+local function main(args)
+  -- 处理命令行参数
+  local showHelp = false
+  local verbose = false
+
+  for _, arg in ipairs(args) do
+    if arg == "--help" or arg == "-h" then
+      showHelp = true
+    elseif arg == "--verbose" or arg == "-v" then
+      verbose = true
+    end
+  end
+
+  if showHelp then
+    printHelp()
+    return
+  end
+
+  -- 获取命令列表
+  local programDir = "/rom/programs"
+  local files = fs.list(programDir)
+  local commands = {}
+
+  for _, file in ipairs(files) do
+    if file:sub(-4) == ".lua" then
+      local cmdName = file:sub(1, -5)
+      table.insert(commands, {name = cmdName, path = programDir .. "/" .. file})
+    end
+  end
+
+  -- 排序命令列表
+  table.sort(commands, function(a, b)
+    return a.name < b.name
+  end)
+
+  -- 显示命令列表
+  print("Available commands (" .. #commands .. "):")
+  for _, cmd in ipairs(commands) do
+    if verbose then
+      print(string.format("  %-15s - %s", cmd.name, cmd.path))
+    else
+      print(string.format("  %-15s", cmd.name))
+    end
+  end
+end
+
+-- 运行主函数
+local args = {...}
+main(args)

installer.lua

@@ -1,5 +1,5 @@
 -- LeonOS installer
-local INSTALLER_VERSION = "0.3.7 Beta 4"
+local INSTALLER_VERSION = "0.3.7 Beta 5"
 local DEFAULT_ROM_DIR = "/leonos"
 
 print("Start loading LeonOS installer ("..INSTALLER_VERSION..")...")