chore: 更新版本号至0.3.2并重构pkg命令补全逻辑

将installer.lua和bios.lua中的版本号从0.3.1更新至0.3.2
使用completion.build重构pkg命令补全逻辑，简化代码结构

data/computercraft/lua/bios.lua

@@ -1,4 +1,4 @@
-_G._HOST = _G._HOST .. " (LeonOS 0.3.1)"
+_G._HOST = _G._HOST .. " (LeonOS 0.3.2)"
 local fs = rawget(_G, "fs")
 
 _G._RC_ROM_DIR = _RC_ROM_DIR or (...) and fs.exists("/leonos") and "/leonos" or "/rom"
@@ -32,7 +32,7 @@ local rc = {
   _VERSION = {
     major = 0,
     minor = 3,
-    patch = 1
+    patch = 2
   },
   queueEvent  = pull(os, "queueEvent"),
   startTimer  = pull(os, "startTimer"),

data/computercraft/lua/rom/completions/pkg.lua

@@ -1,31 +1,6 @@
--- pkg command completion
 local shell = require("shell")
 local completion = require("cc.shell.completion")
 
--- 定义pkg命令的补全函数
-local function pkg_completion(shell, index, text, previous)
-  -- 子命令补全
-  if index == 1 then
-    return completion.choice(text, {"install", "update", "remove", "list", "search", "info", "help"})
-  end
-
-  -- 选项补全 (--force, --local)
-  if text:sub(1, 2) == "--" then
-    return completion.choice(text, {"--force", "--local"})
-  end
-
-  -- 命令特定补全
-  local command = previous[1]
-  if command == "install" or command == "update" or command == "remove" or command == "info" then
-    -- 这里可以添加包名补全逻辑
-    -- 目前返回空列表
-    return {}
-  elseif command == "search" then
-    -- 搜索查询不需要特定补全
-    return {}
-  end
-
-  return {}
-end
-
-shell.setCompletionFunction("pkg", pkg_completion)
+shell.setCompletionFunction("pkg", completion.build(
+  completion.choice{"install", "update", "remove", "list", "search", "info", "help"},
+))

installer.lua

@@ -1,5 +1,5 @@
 -- LeonOS installer
-local INSTALLER_VERSION = "0.3.1"
+local INSTALLER_VERSION = "0.3.2"
 local DEFAULT_ROM_DIR = "/leonos"
 
 print("Start loading LeonOS installer ("..INSTALLER_VERSION..")...")