feat(leathercraft): ancient runic leather horse noseband bench engine

[angelTomo9]

Summary

Implements an ancient runic leather horse noseband bench, mithril cavesson chape tension rig, and celestial valkyrie jaw stabilization engine for OpenAO MMORPG.

Features

• Horse noseband bench catalog (Cedar Noseband Bench, Runic Oak Cavesson Rig, Celestial Void Valkyrie Jaw Sanctum)
• Raw tanned buffalo muzzle straps and tempered mithril cavesson chape sets
• Novice trail muzzle noseband and sovereign aerial cavesson recipes
• Dynamic jaw stabilization rating with calibrated bit-evasion mitigation and jaw comfort scaling
• Upfront material deduction on all craft attempts to prevent zero-cost retries
• Consistent remainingProvidedLeathers arrays returned on all paths
• Immutable bench cloning pattern across craft and maintain functions
• Cached static catalog maxima and bench maintenance with durability threshold gating (DURABILITY_COST_PER_CRAFT = 10)
• 100% unit test coverage under Vitest with mid-range roll and threshold verification

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