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…expired key; preview save name-keyed + empty=abandon-change; previewId atomic claim; transactional batch queue + column truncation; digest zone token-budgeted; window-orphan tool_result trim; convId length cap; readFormData authoritative moduleId + /form/options permission gate (security audit); WRITE_CLAIM state-statement lookahead
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…-budget projection (conservative estimator, in-turn demotion, pre-send self-check, prompt_eval_count calibration)
