ci(backend): pass --ignore=queryargus to pytest directly

The previous pytest.ini change had no effect on CI: pytest 9 (used in CI)
doesn't honour the [tool:pytest] section header in pytest.ini — that header
is for setup.cfg. Rather than rewriting the ini file and risking side
effects on the other (currently silently-ignored) options, set the flag at
the workflow level where its effect is explicit.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: ChingEnLin

.github/workflows/ci.yml

@@ -58,7 +58,9 @@ jobs:
       env:
         GEMINI_API_KEY: "dummy-key-for-tests"
       run: |
-        PYTHONPATH=. pytest --cov=. --cov-report=term-missing --cov-report=xml --verbose
+        # Skip queryargus submodule tests: they need extras (azure-*, typer)
+        # that we deliberately don't install via `pip install --no-deps`.
+        PYTHONPATH=. pytest --ignore=queryargus --cov=. --cov-report=term-missing --cov-report=xml --verbose
         
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v3