add sync status logger to improve visibility

[benjamin202410]

Proposed changes

add sync status logger to improve visibility

Types of changes

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• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Changes that don't change source code or tests
• docs: Documentation only changes
• feat: A new feature
• fix: A bug fix
• perf: A code change that improves performance
• refactor: A code change that neither fixes a bug nor adds a feature
• revert: Revert something
• style: Changes that do not affect the meaning of the code
• test: Adding missing tests or correcting existing tests

Impacted Components

Which parts of the codebase does this PR touch?
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• Consensus
• Account
• Network
• Geth
• Smart Contract
• External components
• Not sure (Please specify below)

Checklist

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• This PR has sufficient test coverage (unit/integration test) OR I have provided reason in the PR description for not having test coverage
• Tested on a private network from the genesis block and monitored the chain operating correctly for multiple epochs.
• Provide an end-to-end test plan in the PR description on how to manually test it on the devnet/testnet.
• Tested the backwards compatibility.
• Tested with XDC nodes running this version co-exist with those running the previous version.
• Relevant documentation has been updated as part of this PR
• N/A

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[Copilot]

Pull request overview

This PR adds a periodic sync-status log to the eth protocol manager to improve operational visibility into block/state sync progress during long-running synchronisations.

Changes:

• Introduces a syncStatusLogger goroutine that periodically logs downloader progress (starting/current/highest blocks, state sync counters, peer count).
• Adds a syncStatusLogCycle constant (10 minutes) controlling the log interval.
• Starts the new logger alongside existing sync goroutines in ProtocolManager.Start.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
eth/sync.go	Adds syncStatusLogCycle and ProtocolManager.syncStatusLogger() to periodically log current sync progress.
eth/handler.go	Starts syncStatusLogger during protocol manager startup.