feat(trace): tape format versioning — version-stamped tapes, refuse-on-mismatch (#411)#453

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tape-format-versioning-411

Jul 6, 2026

Commits on Jul 5, 2026

feat(trace): tape format versioning — version-stamped tapes, refuse-on-mismatch (#411)

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fix(trace): harden #411 refusal paths per adversarial review

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test: portable torn-header fixture (BSD sed rejects GNU '2i' one-liner)

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