Codex OAuth caps gpt-6-astra at the same 272K window as gpt-5.4/5.5/5.6, so the global 50% trigger compacted at ~136K. Extend the existing codex_gpt55_autoraise gate to any slug containing "astra" (minus the opt-in -900k picker variants, which already unlock the wider window). Other routes (OpenAI direct, OpenRouter) keep the user threshold.