Fix shard router live config reload

[Jerry-Tekh]

Summary

• add runtime shard config reload and Redis pub/sub listener for shard:config:updated
• swap immutable routing snapshots atomically during ring rebuilds
• add /sharding/reload admin endpoint and live-reload routing coverage

Tests

• npm test -- shard-router.spec.ts --runInBand --detectOpenHandles
• npm run typecheck

Closes #813

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[RUKAYAT-CODER]

Great job so far

There’s just one blocker — the workflow is failing. Could you take a look and fix it so all checks pass?

Happy to review again once that’s done.

[Jerry-Tekh]

Great job so far

There’s just one blocker — the workflow is failing. Could you take a look and fix it so all checks pass?

Happy to review again once that’s done.

it is resoled now ,you can check . thank you so much . looking forward to bringing in more contribution.

[RUKAYAT-CODER]

Thank you for contributing to the project.