Pull request overview

Adds operator-visible warning logs when LoadDetectFilter rejects requests due to high worker load or low free memory (503s), and introduces unit tests to cover the new rejection behavior plus whitelist/healthy pass-through.

Changes:

• Add WARN logging for worker-load and low-memory request rejections in LoadDetectFilter.
• Add LoadDetectFilterTest unit coverage for whitelist bypass, busy rejection, low-memory rejection, and healthy requests.
• Register the new unit test in UnitTestSuite.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/filter/LoadDetectFilter.java	Adds rejection WARN logs and minor refactor (captures current load).
hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/unit/api/filter/LoadDetectFilterTest.java	New unit tests for whitelist/busy/low-memory/healthy scenarios.
hugegraph-server/hugegraph-test/src/main/java/org/apache/hugegraph/unit/UnitTestSuite.java	Adds LoadDetectFilterTest to the unit suite.

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