v1.22.0

Changed

• Single-model mode: deepseek-v4.1-flash (provider opencode-go) is now the only selectable model and the default for every delegation — tier 0, default: true, variants high/low/max, $0.15/Mtok in and $0.60/Mtok out. defaults.tier stays 0 and effortPolicy runs max on it.
• Every other model id — including the previously free tier-0 entries (x-preview-f-free, ox-alpha-free, big-pickle, hy3-free, mimo-v2.5-free, nemotron-3-ultra-free, nemotron-3.5-lightning-free) — moved to excluded in config/models.json. Requesting any of them fails with MODEL_EXCLUDED.
• Delegation docs follow the new setup: the delegate agent, the opencode-delegation and opencode-supervision skills, and /opencode:delegate now describe single-model mode.

Notes

• Delegation now needs a working opencode-go credential (opencode auth login).
• Tier escalation has no target left: a failed run is retried once on the same model, then reported as BLOCKED.