[WIP] Gloas Mainnet Checklist

[ensi321]

Must

Fork transition

Untracked

• Diagnose missed block 0 at fork https://discord.com/channels/593655374469660673/1372263082415493200/1527622997836566538
• Extract eeb1c13/a8c50ce from devnet 7 branch to their own PR

Sync

Issues

• glamsterdam-devnet-5: sync stalled due to invalid payload cached forever #9660
• Queue failed attestations due to EXECUTION_PAYLOAD_NOT_SEEN #9224
• Handle orphaned execution payloads #9060

PRs

• feat: evict invalid payloads from cache #9661

Mainnet scale

PRs

• fix: builder payment quorum integer overflow at mainnet-scale stake #9350

Untracked

• EIP-7688 perf optimization round (ACD pre-testnet gate; land the ~20% POC optimizations)

Fork choice

Issues

• Implement fork choice compliance test generator #7637 for gloas / compliance fork-choice tests: gloas SSZ types diverge from consensus-specs master #9295 (compliance tests)

PRs

• feat: implement forkchoice is_head_weak() and is_parent_strong() #9654
• feat: implement should_apply_proposer_boost for gloas #9233
• feat: add fork choice compliance test for pre-gloas forks #9670

Non-finality

Untracked

• Bounded checkpoint-state retention / no OOM under non-finality (fix: bound SeenPayloadEnvelopeInput cache size to prevent OOM #9489/fix(beacon-node): protect just-inserted entry from pruneToMaxSize eviction #9490 closed unmerged, re-open direction); bound SeenPayloadEnvelopeInput (SeenPayloadEnvelopeInput cache missing pruning mechanisms #9073)

Builder

Issues

• Review builder circuit breaker in gloas #9296

PRs

• feat: builder selection, broadcast validation, stateless flow for gloas block production #9595
• feat: implement gloas builder api #9594

Untracked

• Remote-vs-local bid comparison + fallback + builder boost factor (blocked on beacon-APIs SSZ Rewrite #625 / keymanager-APIs Tests for state transition helpers #87 / builder-specs merging)

Should

Issues

• De-duplicate payload from persisted beacon blocks #5671 (envelope archive never pruned — simple prune first, dedup later)
• Fix payload status of anchor block #9691

PRs

• feat: implement head_v2 event #9486
• feat: implement compute_weak_subjectivity_period for Gloas (EIP-8061) #9625

Untracked

• Gossip REJECT validation gaps: executionPayloadEnvelope.ts:78, payloadAttestationMessage.ts:85, block.ts:167
• Pre-publish envelope validation (miss slot instead of publishing network-rejected envelope)
• PTC epoch-436 residuals: fork-choice.ts:1630 UNKNOWN_PAYLOAD_STATUS review, BAL re-serialization check

Post-mainnet

Issues

• Restore alpha.12 fast-confirmation spec coverage #9690 (FCR rework) / Add Gloas lightclient api support #9648 (light client)
• Implement min-bid #6602 / Explore implementing MEV boost's features post-gloas #9298 (builder economics)
• Gloas/ePBS: block production drops same-FFG attestations voting for the other payload-status variant (FULL/EMPTY) #9596 / Include SingleAttestation when producing block #8028 / getPoolAttestationsV2 omits unaggregated attestations — only exposes aggregatedAttestationPool #9677 (rewards optimization)
• [gloas] computePayloadTimelinessCommitteesForEpoch performance issue #9013 / [gloas] fork-choice compute_head performance issue #9014 / Gloas pending deposits performance issue #9341 / Gloas: onboard 20k builders at fork transition #9395 (perf, unless devnets prove painful)
• Remove shouldOverrideForkChoiceUpdate after Gloas is live #9441 / Remove SECONDS_PER_SLOT and ATTESTATION_SUBNET_PREFIX_BITS after gloas #9201 / Clean up post EIP-8282 #9558 / Unify churn-limit helper naming to allow non-cache-requiring reuse #9626 (post-activation cleanup)

PRs

• feat: disable fast confirmation rule while syncing #9681
• feat: gloas lc support #9687

Untracked

• Block production refactor (separate gloas path), cache-sizing/timing TODOs, validator-monitor envelopes, RLP residue, networking spec-runner investigation, post-gloas merkleProof cases