refactor(installer): 将顶部名称栏代码移至加载完成后执行

将顶部名称栏的显示逻辑从程序开头移动到模块加载完成后执行，使界面初始化更合理

installer.lua

@@ -1,24 +1,5 @@
 -- LeonOS installer
 
--- 程序顶部名称栏
-local term = require("term")
-local colors = require("colors")
-
--- 保存当前颜色设置
-local old_fg = term.getTextColor()
-local old_bg = term.getBackgroundColor()
-
--- 设置名称栏颜色并显示
-term.setTextColor(colors.white)
-term.setBackgroundColor(colors.cyan)
-term.at(1, 1).clearLine()
-term.at(1, 1).write("=== LeonOS Installer ===")
-
--- 恢复颜色设置
-term.setTextColor(old_fg)
-term.setBackgroundColor(old_bg)
-term.at(1, 2)
-
 local DEFAULT_ROM_DIR = "/rc"
 term.at(1, 2).write("Start loading LeonOS installer...\n")
 term.write("[Installer] Loading module 1\n")
@@ -82,6 +63,23 @@ local function progress(y, a, b)
     colors.yellow, "]")
 end
 term.write("[Installer] Loading done.\n")
+-- 程序顶部名称栏
+local term = require("term")
+local colors = require("colors")
+-- 保存当前颜色设置
+local old_fg = term.getTextColor()
+local old_bg = term.getBackgroundColor()
+
+-- 设置名称栏颜色并显示
+term.setTextColor(colors.white)
+term.setBackgroundColor(colors.cyan)
+term.at(1, 1).clearLine()
+term.at(1, 1).write("=== LeonOS Installer ===")
+
+-- 恢复颜色设置
+term.setTextColor(old_fg)
+term.setBackgroundColor(old_bg)
+term.at(1, 2)
 -- 只清除顶栏以下的区域
 for y=2, term.getSize() do
   term.at(1, y).clearLine()