10311 gloas da

[mehdi-aouadi]

PR Description

Update the BlobReconstructor and its implementations to handle Gloas

Fixed Issue(s)

#10311

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
Touches core data-availability recovery, gossip equivocation tracking, and blob reconstruction paths; fork-conditional optional fields and new task-start gating could change when recovery triggers or how many sidecars/blobs are built.

Overview
Adds Gloas support to data-column-sidecar handling by making kzg_commitments, signed headers, and inclusion proofs optional at the DataColumnSidecar interface level and pushing fork-specific behavior into DataColumnSidecarUtil (new APIs to extract commitments, build sidecars, fetch inclusion proofs, and reconstruct all sidecars).

Refactors EL-side recovery (DataColumnSidecarELManagerImpl) and equivocation tracking to be fork-agnostic: recovery can be triggered by either sidecars or blocks, uses a per-task commitments SafeFuture and AtomicBoolean guard, and constructs/publishes recovered sidecars via spec.getDataColumnSidecarUtil(slot) (including new Spec.getNumberOfCustodyGroups(slot) access).

Updates blob reconstruction to work for forks without commitments on sidecars by deriving blob count from proof/column sizes, adding empty-input guards, and using DataColumnSidecarUtil.reconstructAllDataColumnSidecars; adds new Gloas-focused tests and adjusts existing Fulu tests/logging to use getMaybeKzgCommitments() and simplified DataColumnSidecar log output.

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[zilm13]

LGTM, just few nits

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.