clear3: regenerate RaindexV6 + dependent arb/flash-borrower pointers

Rebase onto main (post-#2735 calc-context + #2736 takeOrders4 guard). The
clear3 NegativeBounty-guard hoist changes RaindexV6 bytecode -> new CREATE2
address 0x37FC0EFec37D19f8A221aa4F8F7600C9ba2AcD20; the three arb/flash-borrower
takers that embed RaindexV6 re-emit to new addresses. Regenerated pointers
(fixpoint) + test_fixtures RaindexV6 ABI/bytecode.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: thedavidmeister