Reconcile round sets against fight totals and certify per-round data

[komaksym]

Parent

• Implement auditable UFC dataset fidelity pipeline #14 — Implement auditable UFC dataset fidelity pipeline

What to build

Reconcile locally valid complete round sets against fight totals and make the certified per-round output trustworthy. This is the cross-grain boundary where exact contradictions become symmetric quarantine decisions.

Acceptance criteria

• Additive fields reconcile exactly across rounds and fight totals, including knockdowns, landed/attempted strike and takedown pairs, submission attempts, reversals, and control seconds.
• Significant-strike decompositions reconcile independently for landed and attempted values; percentages are never summed and are recomputed from counts using the documented source rule.
• An exact contradiction produces ROUND_TOTAL_RECONCILIATION=fail, round_reconciliation_status=mismatch, and quarantines both the fight-total record and the entire round set.
• A bad fight-total field without an established shared contradiction does not discard independently valid rounds; dependent checks become warning-level not_checked where evidence is insufficient.
• Certified per-round output includes only complete sets with reconciled or reconciled_with_not_checked; incomplete, invalid, and mismatched sets never leak partial survivors.
• The final propagation and status behavior is covered by symmetric-mismatch, local-round-failure, invalid-total, and unavailable-schedule fixtures.

Blocked by

• Validate complete round sets and local round invariants #18 — Validate complete round sets and local round invariants.