From an audit of bannerlator-session against bannerlator-steam-x64:
- a system bus and the NetworkManager stand-in when none is up, stopped
with the client: the client showed no connection on the desktop
- stale .crash/steam.pid/htmlcache Singleton* cleared before a start
- package/beta matched to -clientbeta before every start (rc=42 loop)
- BL_CLIENT_CPUS re-pinning of the client and its web helper every 5 s
- pathcache.c and perms.c also recognise steamrt64 (the path cache saved
most of the arm64 client's start-up; the write override covers its
self-update)