BLOCKER: trusted Strix smoke contract lags gpt-5.4 fallback

[seonghobae]

Evidence

The default branch workflow uses the executable direct-OpenAI fallback gpt-5.4, while the trusted scripts/ci/strix_required_workflow_smoke.sh on main still requires the retired gpt-5.6-luna string. The mismatch fails the privileged smoke step before target-repository analysis; it was reproduced on ContextualWisdomLab/disksage#247 and #1316.

Completion criteria

• trusted smoke accepts the current executable gpt-5.4 fallback contract;
• the OpenCode direct model pool and focused contracts use the same model;
• a current-head consumer Strix check reaches target-repository analysis;
• no provider or vulnerability failure is downgraded.

Tracked by PR: #1316

[seonghobae]

Current state (2026-08-25): required-path smoke is fixed on main by #1318. PR #1316 now carries the remaining OpenCode direct-model pool, fallback-diagnostic, focused-contract, and documentation alignment. The issue remains open until a current-head consumer Strix check proves the complete contract after #1316.