core/*: use comm idx as key in DutyDB for agg duty

[KaloyanTanev]

Fixing 2 bugs with partial sigs during aggregation duties.

1. reportParSigs never warned on inconsistencies (core/tracker/tracker.go)
   The guard checked len(parsigsByRoot) <= 1 against the outer map (number of pubkeys) instead of the inner map (number of distinct roots per pubkey), so the warning was effectively dead code for single-validator cases. Fixed, and improved the log to show per-root msg_root hex, share indices, and a sample parsig JSON.

2. Wrong aggregate returned to VCs in post-Electra (core/dutydb/memory.go, core/validatorapi/validatorapi.go, core/interfaces.go)
   In Electra, AttestationData.Index is always 0, so all committees in a slot share the same AttestationDataRoot. The aggKey in DutyDB only used {slot, root}, causing later committee aggregates to silently overwrite earlier ones. AggregateAttestation also ignored opts.CommitteeIndex entirely. Fixed by adding CommitteeIndex to aggKey (derived from CommitteeBits on post-Electra aggregates) and threading it through AwaitAggAttestation.

category: bug
ticket: #4006

[Copilot]

Pull request overview

This PR fixes aggregator-duty lookup and partial-signature diagnostics, especially for post-Electra attestations where multiple committees can share the same attestation data root.

Changes:

• Adds committee index to aggregated attestation DutyDB lookup keys and threads it through validator API calls.
• Adds Electra multi-committee DutyDB coverage.
• Fixes partial-signature inconsistency reporting to check roots per pubkey.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
core/validatorapi/validatorapi.go	Passes committee index into aggregate attestation lookup.
core/tracker/tracker.go	Updates inconsistent partial-signature reporting logic and log payload.
core/interfaces.go	Updates interfaces and wiring signatures for aggregate attestation lookup.
core/dutydb/memory.go	Includes committee index in aggregated attestation storage/query keys.
core/dutydb/memory_test.go	Adds Electra multi-committee aggregate lookup test and updates existing call.
core/dutydb/memory_internal_test.go	Updates cancelled-query test for new signature.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud