Orgchain v1.9: lineage/v0 as an ordinals metaprotocol, rehearsed on regtest

SPEC.md writes lineage/v0 down as an ordinals metaprotocol: the envelope
fields, chain order, authority by verified parents, every rule, ownership by
sat. bin/lineage-index.mjs reads lineage events from a real ord server and
folds them with the same reducer the lab uses.

tools/regtest rehearses the sample on Bitcoin Core regtest with standardness
on: the lab's own action code signs on a chain funded only by coins imported
from regtest (LocalChain.importCoin), each beat's transactions are broadcast
byte for byte and mined, ord indexes them, and --compare checks the same
events in the same beats, the same metadata and parents, every inscription
in the same output and the same trees. tests/indexer.test.js replays a
recorded run.

The first rehearsal found that reveals committed to tapscript's re-encoded
tapleaf, which real Bitcoin rejects. They now commit to the exact script
bytes, and the local chain checks script paths per BIP-341/342, still
loading reveals made before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4upF5LVwmPDDqrhdUfnXh

tests/fixtures/regtest-rehearsal.json

@@ -0,0 +1 @@
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truncated