Forward-only ZAP. No backwards-compat shims:
- zap_codec multi.go: drop BE-fallback read path
- zap_codec zapcodec.go: drop BE-fallback read path + peekVersionBE helper
- zap_native codec_select.go: rip LegacyEnabled var + LUXD_ENABLE_LEGACY_CODEC
env knob + ErrLegacyCodecDisabled. Comment block simplified.
ZAPActivationUnix stays at 1766708400 (Dec 25 2025 16:20 PST — Quasar
activation timestamp, same as all other forks). ShouldUseZAPForWrite
returns true unconditionally — ZAP is the only wire format.
Tests cleaned: drop LegacyEnabled toggle scenarios in
TestShouldUseZAPForWrite and TestRed_V15. Pin ZAPActivationUnix value
to the Quasar timestamp.
Validators upgrading from v1.28.x DBs cannot mount in this layout
(pre-LP-023 BE-encoded P-chain state is unreadable). Mainnet/testnet/
devnet operators must rebootstrap from genesis + RLP re-import.
Hanzo AI
fe366196b6