Bound repeated generation input in long Codex rollouts

[johnbuccola]

Change

Bound the repeated generation input on long Codex rollouts. The turn and tool spans still carry their evidence. Ordinary rollouts keep the existing generation input. Compaction records, which the parser does not use, are no longer retained.

Check

• 121 plugin tests and lint pass.
• Replayed a 37 MB rollout that previously aborted Node with an out of memory error. The Stop hook completes in about 1.7 seconds against a local receiver.

Limit

This prevents the observed repetition failure. Very large rollouts still need a streaming parser with durable turn retry handling. The fallback marks omitted generation input in the trace.

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