CSM Reference Runtime v0.1

A genuine, installable Python package (csm_reference_runtime, src/csm_runtime/, 12 pytest files) — not a paper. Loads the seed dataset and rebuilds native state, demonstrating that the runtime itself behaves correctly: 52/52 regression tests, 24/24 seed-consistency assertions, 89 genesis-ledger events, and an exact replay hash of 8137913b7f…. The core invariant, verbatim: ‘No certificate path ⇒ no native theorem mutation.’ This version adds no new mathematical content — it only mechanizes and re-verifies the seed dataset.