`hermes setup` launched by install.ps1 on PowerShell 5.1/conhost printed
`[35m`/`[0m` literally. hermes_cli.colors and the skins emit raw SGR codes
whenever stdout is a TTY, but no Hermes entry point ever set
ENABLE_VIRTUAL_TERMINAL_PROCESSING (origin/main didn't either; only
pm/cli.py did, for its own progress line), and shells hand native children
a console with VT off.
hermes_bootstrap now opts the stdout/stderr console in at import, before
anything prints and before the venv relaunch (the mode lives on the console
buffer, so the child inherits it). Non-console handles are left alone; a
console that refuses VT gets NO_COLOR so it shows plain text instead of
escape garbage. ctypes only: colorama is merely transitive.
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