Add enableAt to RuleSet

[Robert Yokota (rayokota)]

What

Add enableAt to RuleSet. Also update CHANGELOG

Checklist

• Contains customer facing changes? Including API/behavior changes
• Did you add sufficient unit test and/or integration test coverage for this PR?
  • If not, please explain why it is not required

References

JIRA:

Test & Review

Open questions / Follow-ups

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[Copilot]

Pull request overview

Adds support for environment-gated Schema Registry rule execution by introducing an enableAt attribute on RuleSet, propagating it through RuleContext, and using it to skip rule execution in both sync and async serdes.

Changes:

• Add enable_at / enableAt to RuleSet (serialization, deserialization, hashing).
• Extend RuleContext with enabled_env and pass it from schemas’ rule sets during rule execution.
• Gate rule execution in _is_disabled() based on enableAt for both sync and async serdes.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

File	Description
src/confluent_kafka/schema_registry/common/serde.py	Adds enabled_env to RuleContext to carry rule-set environment gating data.
src/confluent_kafka/schema_registry/common/schema_registry_client.py	Adds enable_at to RuleSet and includes it in dict (de)serialization and hashing.
src/confluent_kafka/schema_registry/_sync/serde.py	Propagates enable_at into RuleContext and skips rules based on environment gating.
src/confluent_kafka/schema_registry/_async/serde.py	Async equivalent of sync gating and context propagation.

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[sonarqube-confluent]

Quality Gate failed

Failed conditions
75.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube