v10.0.0: ConditionalBealTheorem — Opera Numerorum — explicit premises
Focused build Beal.Final.ConditionalBealTheorem passed, Axiom only [propext, Classical.choice, Quot.sound], No new axiom/sorry/admit/True stubs. Premises: J0DecompositionSoundness_26, MwrankCertificateSoundness_26, FormalImmersionSoundness_26, FreyCurveExists (reuses FreyCurveConstruction_26), LevelLowering_26 (packages indexed modularity supplier + LevelLoweringCertificate_26). Chain v9.2+v9.3+v9.4+v10. Task #495 remains v10.0.1 hardening for explicit cotangent map M3.