feat(interval): replay endpoint sine chronology

[kim-em]

Summary

• add the fixed endpoint-valued sin 10 canary with exact rational bounds
• retain the six-event constant, reduction, local-sine, instantiation, negation, and transport chronology
• replay the trace through the generic proof registry and ProofFrontend to prove -1 ≤ Real.sin 10 ∧ Real.sin 10 < 0
• guard operation resolution and exact node shapes by stable keys, including malformed and missing-operation refusal cases
• document that this layer reuses only the Machin pi enclosure from the base canary, uses per-schema guards, hardcodes half-turn 3, and has an exact-fit resource envelope

Validation

• lake build HexInterval.SinTenIntervalConformance HexIntervalMathlib.SinTenIntervalConformance (2230 jobs)
• lake build HexIntervalMathlib.SinTenConformance (2215 jobs)
• conformance target registration check
• DAG and Phase-4 checks
• published trust-surface check
• exact proof-only freshness check
• git diff --check

Stacked on #9258.