Live verification (2026-08-21): big-pickle and mimo-v2.5-free return 429
FreeUsageLimitError for ANY User-Agent except the opencode CLI's own
'opencode/latest' — same IP, no cooldown effect, while the other six free
models serve our honest HermesAgent UA freely. Hermes sends deliberate
attribution headers and does not impersonate other clients, so these two
models are broken for our users by policy on OpenCode's side; delist them
rather than ship dead picker entries.
- opencode-free catalog: 8 -> 6 models (both curated lists)
- plugin default_aux_model: big-pickle -> laguna-s-2.1-free (fastest
non-gated free model)
- keyless predicate keeps big-pickle (it IS free-tier; correct routing if
a user enters it manually — they get the relay's own 429, not our 401)
E2E: picker shows 6, laguna aux default completes a keyless agent turn.
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