Viridis Compiled Theorem Stack — Canon v9 (Erasure-Side Intelligence Bound + Featured Paper)

The machine-verified theorem corpus of the Viridis research program — v9, now led by its featured paper. This version carries forward the entire v8 corpus unchanged and adds The Erasure-Side Intelligence Bound (4 pp., PDF) as the human-readable front door to the recovered footing. The Intelligence Bound's thermodynamic branch is read on the erasure / maintenance side of the ledger: acquiring a bit carries no Landauer floor, but erasing one does. The biosphere is the largest known low-entropy dataset, so its erasure (extinction, collapse) carries an irreducible thermodynamic floor proportional to its information content, and stewarding it against erasure imposes a lower bound on the required intelligence. The paper states all nine results verified in Lean 4 (BiosphereErasureBound and BoundedMemoryLearning) and unifies the erasure floor with Turyshev's biosphere-productivity bound and with alignment-as-feasibility. Start with the paper PDF, then CANON_MANIFEST.md and IB_FOOTING_CORRECTION_2026-06-16.md. Concept DOI (always-latest): 10.5281/zenodo.19317982. v1–v8 stand; this is an evolution, not a retraction.