🧹 [code health improvement] Remove unused imports in core.py

[skurtyyskirts]

🎯 What:
Removed unused dependency_manager import and unused Signal, QThread, and QRunnable imports from qt_utils in core.py.

💡 Why:
Cleaning up unused imports improves code readability and maintains codebase hygiene by reducing clutter and potential confusion.

✅ Verification:

• Ran the full test suite (python3 -m unittest discover tests) to ensure functionality is unaffected.
• Ran format/lint checks (flake8 core.py) to confirm no new linting errors were introduced.

✨ Result:
Cleaner, more maintainable code without changing existing behavior.

---

PR created automatically by Jules for task 6690051301727065718 started by @skurtyyskirts

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.

[chatgpt-codex-connector]

You have reached your Codex usage limits for code reviews. You can see your limits in the Codex usage dashboard.

[Copilot]

Pull request overview

This PR is a small code-health cleanup in core.py that removes unused imports to reduce clutter and avoid confusion when reading the plugin’s main module.

Changes:

• Removed unused dependency_manager import from core.py.
• Removed unused Qt-related imports (Signal, QThread, QRunnable) from the qt_utils import list in core.py.