feat(vpsdk): window/syscall/process/stdio/fs/dynlib 适配 + apps 同步调整

Apps/HelloWorld/main.vp

@@ -2,10 +2,7 @@ import vpsdk.vpui as vpui
 import vpsdk.window as window
 import vpsdk.process as process
 import vpsdk.dynlib as dynlib
-import vpsdk.stdlib as stdlib
-import vpsdk.stdio as stdio
 from stdint import *
-import t, c
 
 @__attribute__(section(".text.startup"), aligned(16))
 export def _start() -> int:
@@ -33,7 +30,7 @@ export def _start() -> int:
 
     lbl: vpui.Label = vpui.Label(master, "Name:", 0xFFFFFFFF)
     root.pack(2, vpui.PACK_TOP, 0, 0, 20, 0)
-    btn: vpui.Button = vpui.Button(master, 100, 36, "Submit", &_on_submit)
+    btn: vpui.Button = vpui.Button(master, 100, 36, "Submit", _on_submit)
     root.pack(3, vpui.PACK_TOP, 0, 0, 0, 10)
 
     root2: vpui.Tk = vpui.Tk()