#001Vibe-Proving-Skills1 Skills30aktualisiert 2026-04-23100% des CreatorsSkillBerufBeschreibungAktualisiertlean4-guidelinesSoftwareentwicklerLean 4 formalization and proving workflow. Use for theorem formalization, definition design, proof construction, and proof repair with MCP self-check and Mathlib-first reuse.2026-04-23