refactor: Remove ProvabilityLogic#829
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The ProvabilityLogic formalization has been moved to SeqPL, so remove it from Foundation along with the Modal lemmas that depended on arithmetical soundness/completeness: - Foundation/ProvabilityLogic/ (whole directory) - Foundation/Modal/Boxdot/GL_S.lean - Foundation/Modal/Boxdot/Grz_S.lean - Foundation/Modal/Logic/S/Consistent.lean Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QDE3PcJrxn8nz7V5hJTbjH
This was referenced Jul 2, 2026
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The ProvabilityLogic formalization has been moved to SeqPL, so remove it from Foundation along with the Modal lemmas that depended on arithmetical soundness/completeness:
Claude-Session: https://claude.ai/code/session_01QDE3PcJrxn8nz7V5hJTbjH