Glamsterdam 2 alpha.6 + alpha.7

[zilm13]

PR Description

• Add note about withdrawal deduction in gloas (consensus-specs#5128)
• Remove incorrect anchor seed for payload votes (consensus-specs#5135)
• Deprecate functions for previous upgrades (consensus-specs#5139)
• Simplify apply_parent_execution_payload function signature (consensus-specs#5150)
• Define deprecated containers (consensus-specs#5142)
• Clarify payment eviction if older than previous epoch (consensus-specs#5154)
• Remove PartialDataColumnHeader (consensus-specs#5141)
• Add parent_beacon_block_root to ExecutionPayloadEnvelope (consensus-specs#5152)
• Change proposer preference validator index check to ignore (consensus-specs#5164)
• Fix genesis state in Gloas (consensus-specs#5172) Fix genesis state in Gloas #10615
• Note voluntary exit selection with deferred payload processing (consensus-specs#5176)
• Change minimal PTC_SIZE to 16 validators (consensus-specs#5177)
• Extend light client protocol for Gloas (consensus-specs#5178)
• Increase exit and consolidation churn (EIP-8061) (consensus-specs#5061) EIP-8061 implementation #10629
• Add checkpoint root to proposer preferences (consensus-specs#5190)

alpha.7

• Fix slot check in proposer preferences gossip (Fix slot check in proposer preferences gossip ethereum/consensus-specs#5191)
• Use dependent root for proposer preferences (Use dependent root for proposer preferences ethereum/consensus-specs#5196)
• Set blob_data_available in PayloadAttestationMessage (Set blob_data_available in PayloadAttestationMessage ethereum/consensus-specs#4769)
• Simplify bid.parent_block_hash initialization (Simplify bid.parent_block_hash initialization ethereum/consensus-specs#5194)
• Distinguish absent PTC votes from negative votes (Distinguish absent PTC votes from negative votes ethereum/consensus-specs#5180)
• Add suggestion to queue sidecars per peer (Add suggestion to queue sidecars per peer ethereum/consensus-specs#5199)

Fixed Issue(s)

Documentation

• I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

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Note

Medium Risk
Updates consensus-critical SSZ containers and validation paths (execution payload envelopes and proposer-preferences gossip), which can affect block/payload verification and network propagation if mismatched with the spec. Also changes fork config constants and churn-related processing, requiring careful test coverage against updated reference vectors.

Overview
Bumps consensus-spec reference tests/spec-refs to v1.7.0-alpha.7 and adjusts reference-test routing (adds *_churn variants; ignores additional gossip/SSZ-static cases) to match newly introduced/renamed upstream vectors.

Updates Gloas EPBS SSZ formats by adding parent_beacon_block_root to ExecutionPayloadEnvelope/BlindedExecutionPayloadEnvelope, threading it through proposal creation, unblinding, forkchoice genesis payload, envelope verification, and fixed-part invariant sizing.

Refactors proposer preferences to include a dependent_root field and updates gossip validation to (a) accept current or next-epoch slots, (b) save-for-future until the dependent block/checkpoint state is available, and (c) dedupe by (dependent_root, proposal_slot, validator_index); the validator client publisher now sends the correct dependent root.

Aligns spec config/presets with updated Heze/Gloas constants: renames Heze timing config to INCLUSION_LIST_DUE_BPS, increases minimal PTC_SIZE to 16, and simplifies apply_parent_execution_payload to read latest_execution_payload_bid from state while clarifying builder payment eviction handling.

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