Round aware signatures tracker

[ssd04]

Reasoning behind the pull request

Proposed changes

Testing procedure

Pre-requisites

Based on the Contributing Guidelines the PR author and the reviewers must check the following requirements are met:

• was the PR targeted to the correct branch?
• if this is a larger feature that probably needs more than one PR, is there a feat branch created?
• if this is a feat branch merging, do all satellite projects have a proper tag inside go.mod?

[Copilot]

Pull request overview

This PR makes the sent-signature tracking “round-aware” by storing the consensus round index alongside the signed header hash for each (public key, nonce) entry, and updates competing-block detection to only delay signing when the previous signature is from the current or immediately previous round.

Changes:

• Extend SentSignaturesTracker to record and retrieve (headerHash, roundIndex) for a signed nonce, replacing GetSignedHash with GetSignedNonceInfo.
• Update competing-block detection in subroundSignature to ignore signatures from rounds older than currentRound-1.
• Update stubs and unit tests to match the new interface and semantics (“most-recent-round-wins”).

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
testscommon/sentSignatureTrackerStub.go	Updates the test stub to the new RecordSignedNonce(..., roundIndex) / GetSignedNonceInfo API.
process/track/sentSignaturesTracker.go	Stores roundIndex with the signed hash and updates overwrite semantics to “most-recent-round-wins”.
process/track/sentSignaturesTracker_test.go	Expands unit tests to cover overwrites based on round index and new getter shape.
process/interface.go	Updates the SentSignaturesTracker interface to the new methods/signatures.
consensus/spos/interface.go	Updates the consensus-side SentSignaturesTracker interface to the new methods/signatures.
consensus/spos/bls/v2/subroundSignatureCompetingBlock_test.go	Updates and extends tests for competing-block waiting behavior using round-aware signed info.
consensus/spos/bls/v2/subroundSignature.go	Records signed nonce with current round index and uses round index to decide whether to delay on competing blocks.

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The base branch was changed.

[codecov]

Codecov Report

❌ Patch coverage is 93.54839% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.69%. Comparing base (dd67d4a) to head (b945171).
⚠️ Report is 6 commits behind head on feat/testnet-fixes.

Files with missing lines	Patch %	Lines
consensus/spos/bls/v2/subroundSignature.go	87.50%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@                 Coverage Diff                 @@
##           feat/testnet-fixes    #7893   +/-   ##
===================================================
  Coverage               77.68%   77.69%           
===================================================
  Files                     885      885           
  Lines                  125790   125803   +13     
===================================================
+ Hits                    97715    97737   +22     
+ Misses                  21594    21589    -5     
+ Partials                 6481     6477    -4     

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