fix(ci): run pytest via active Python interpreter in orchestrator CI loop

[cvsz]

Motivation

• Prevent FileNotFoundError in CI when pytest is not on PATH by resolving and running tests with the active Python interpreter.

Description

• Import sys and change _run_pytest() in agents/ci.py to invoke sys.executable, "-m", "pytest", "-q" while keeping the existing asyncio.create_subprocess_exec pattern.

Testing

• Ran python agents/orchestrator.py, which invoked sys.executable -m pytest -q and completed without the previous FileNotFoundError; pytest returned a non-zero exit (tests failing) but the CI loop handled it instead of crashing.

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Codex Task

[gemini-code-assist]

Code Review

This pull request modifies the _run_pytest function in agents/ci.py to execute pytest using sys.executable -m pytest. This change ensures that the test runner uses the specific Python interpreter associated with the current environment. I have no feedback to provide.