Fix workflow errors: remove unused imports, add httpx dependency, fix import order

[Claude]

CI/CD workflows were failing due to flake8 linting errors and missing test dependencies. Fixed 10 linting violations and added missing httpx package required by FastAPI's TestClient.

Changes

Removed unused imports (F401 violations)

• gateway/config.py: Removed unused os import
• gateway/database.py: Removed unused Optional from typing
• gateway/main_production.py: Removed unused Depends and Settings imports

Fixed import order (E402 violations)

• tests/test_gateway.py: Moved stdlib/package imports before path manipulation, added # noqa: E402 for post-path imports
• tests/test_python_modules.py: Same pattern applied

Added missing dependency

• gateway/requirements.txt: Added httpx==0.25.2 required by starlette.testclient.TestClient

Example of the import order fix:

import sys
from pathlib import Path
import pytest  # stdlib first

sys.path.insert(0, str(Path(__file__).parent.parent / "gateway"))

from fastapi.testclient import TestClient  # noqa: E402
from main import app  # noqa: E402

[Copilot]

Pull request overview

This PR aims to get CI passing again by addressing flake8 lint failures (unused imports, E402 import positioning) and by adding a missing runtime test dependency (httpx) required for FastAPI/Starlette’s TestClient.

Changes:

• Removed unused imports to resolve F401 violations across gateway modules.
• Adjusted test import ordering around sys.path manipulation and suppressed flake8 E402 where needed.
• Added httpx==0.25.2 to gateway/requirements.txt to satisfy TestClient dependency needs.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/test_python_modules.py	Moves pytest import above path manipulation and adds # noqa: E402 to imports after sys.path update.
tests/test_gateway.py	Same import ordering adjustment; adds # noqa: E402 for post-path imports of TestClient and app.
gateway/requirements.txt	Adds httpx dependency to support starlette.testclient.TestClient.
gateway/main_production.py	Removes unused FastAPI Depends and unused Settings import.
gateway/database.py	Removes unused Optional import.
gateway/config.py	Removes unused os import.

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[Copilot]

These imports occur after executable code (sys.path.insert(...)). # noqa: E402 will satisfy flake8, but isort --check-only (run in CI) typically still flags imports that aren’t at the top of the file. Consider adding # isort: skip on these post-path imports or refactoring the path injection into a test helper/conftest so imports can stay at the top.

Suggested change

	from fastapi.testclient import TestClient # noqa: E402
	from main import app # noqa: E402
	from fastapi.testclient import TestClient # noqa: E402 # isort: skip
	from main import app # noqa: E402 # isort: skip

[Copilot]

These imports are intentionally placed after sys.path.insert(...) and suppressed for flake8 via # noqa: E402, but isort --check-only (enabled in CI) will usually still fail because imports aren’t at the top of the file. Add # isort: skip for these lines or move the path setup elsewhere (e.g., conftest) so isort and flake8 both pass.

Suggested change

	from ioc_analyzer import IOCAnalyzer # noqa: E402
	from threat_feed import ThreatFeed # noqa: E402
	from ioc_analyzer import IOCAnalyzer # noqa: E402 # isort: skip
	from threat_feed import ThreatFeed # noqa: E402 # isort: skip

[Copilot]

httpx is added to gateway/requirements.txt, but the python-app.yml workflow installs only the repo-root requirements.txt before running unittest discover (which imports tests/test_gateway.py and therefore fastapi.testclient). To prevent CI import errors in that workflow, also add httpx to the root requirements.txt or update the workflow to install gateway/requirements.txt as well.