🧪 [Add unit test for benchmark script]

[joy7758]

🎯 What: Added a unit test (tests/test_benchmark_evidence_adequacy.py) for the standalone benchmark_evidence_adequacy.py script to ensure it completes without error.
📊 Coverage: The test covers the happy path of the benchmark() function, mocking external dependencies (_load_profile, _profile_valid), system time (time.time()), and standard output (sys.stdout) to verify it executes the loop 1000 times and prints the correct timing message.
✨ Result: Improved test coverage by establishing a deterministic, isolated test for a previously untested benchmark script, protecting it against regressions.

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PR created automatically by Jules for task 8048025514745418060 started by @joy7758

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