GPT-5.6 Codex Efficiency

Use this skill as a GPT-5.6 routing, prompting, and evaluation overlay for Codex. Safety, permissions, repository instructions, and explicit user constraints remain authoritative.

Default objective: satisfy the acceptance contract, then minimize accepted-result cost. Lower latency, higher quality beyond the contract, or mandatory topology is a different objective; pursue it at higher cost only when the user explicitly chooses that tradeoff.

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