make_os_module patched 10 os names, so every other os call inside a
Workspace block reached the host filesystem with a virtual path in hand.
runtime/verbs.py and verbs.ts now classify every guest filesystem verb
once: 23 route through an op door, 14 refuse with a condition, 30 pass
through to the host, and an unclassified name defaults to ENOTSUP.
patch_process installs the routing as attributes on the real os module
instead of swapping sys.modules["os"], so a plain module-level import os
routes and pathlib, shutil and glob follow. os.stat answers a real
os.stat_result, which is what shutil.copystat and os.path.samefile need.
Zecheng Zhang
5639b62790