Squash of PR #658. Discovery records each llama.cpp model's parallel slot
count (from --parallel/-np, or /props total_slots when the launch command
states none), and a Claude launch warns when the context split across
those slots leaves less than 40K tokens per request. An explicit
--parallel beside a /props context records a slot count of 1, so a later
round overwrites an earlier count, and a non-2xx /props is remembered per
launch command while a network error is retried.
Merge-time fix by the maintainer: the architecture-invariants sentence on
the explicit --parallel case now says it records a slot count of 1.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
