vfs kits: split punk9win.vfs into punk9wintk90b2.vfs and punk9wintk903.vfs

Replace the single punk9win.vfs payload with two per-Tk-version kits:
- punk9wintk90b2.vfs: content-identical copy of punk9win.vfs (same Tk
  9.0b2-era bin/tcl9tk90.dll) except the main.tcl punk_main fauxlink
  was not carried over (kit is parked; its tclsh90b4_piperepl mapping
  remains commented out in mapvfs.config)
- punk9wintk903.vfs: same payload with a newer Tk bin/tcl9tk90.dll
  (Dec 2025 build, Tk 9.0.3) and the old 9.0b2-era dll set aside as
  bin/tcl9tk90xxx.dll; adds lib_tcl9/apave4.4.10 (pure Tcl); drops the
  modules_tcl9 Thread-3.0b3 modules (Thread is static in the tclsfe
  runtime); now the mapping target for tclsfe-x64.exe (punk91 kit)

src/runtime/mapvfs.config and src/runtime/vendorlib_vfs.toml (tcludp
install targets) retargeted from punk9win.vfs to the new kit names.

Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com

src/runtime/mapvfs.config

@@ -34,7 +34,7 @@ tclkit-win64-dyn.exe {punk8win.vfs punksys kit}
 #2
 #tclsh90b2 {punk9win.vfs punk90b2 zip}
 #3
-#tclsh90b4_piperepl.exe {punk9win.vfs punk90b4 zip}
+#tclsh90b4_piperepl.exe {punk9wintk90b2.vfs punk90b4 zip}
 #tclsh901t.exe        {punk92in.vfs punk901t zip}
 tclsh90magic.exe    {punk9magicsplat.vfs punkmagic zipcat}
 
@@ -49,8 +49,7 @@ tclsh902z.exe {punk9win_for_tkruntime.vfs punk902z zip}
 #https://github.com/apnadkarni/tcl-sfe/releases
 #tclsfe-x64.exe is not a tk runtime. The versions with tk are 'wish' based so unsuitable.
 #punk9win_for_tkruntime.vfs is intended for kits which already have Tk
-tclsfe-x64.exe {punk9win.vfs punk91 zip}
-
+tclsfe-x64.exe {punk9wintk903.vfs punk91 zip}
 
 #----------------------------------------------
 #experiment - what happens when we run against a 'wish' runtime? Will we have stdin stdout problems?

src/runtime/vendorlib_vfs.toml

@@ -25,7 +25,8 @@
 [install.tcludp]
 source = "vendorlib_tcl9/win32-x86_64/tcludp1.0.13"
 targets = [
-    "punk9win.vfs/lib_tcl9",
+    "punk9wintk90b2.vfs/lib_tcl9",
+    "punk9wintk903.vfs/lib_tcl9",
     "punk9win_for_tkruntime.vfs/lib_tcl9",
     "punk8win.vfs/lib_tcl8",
 ]