public ip and speedtest button

[GoobyFRS]

This pull request introduces several new features and improvements, most notably adding a public IP display and integrated speed test functionality to the application's UI. It also streamlines the build and release process to use the runtime app version from app/main.py as the single source of truth for versioning, ensuring consistency between the UI, build artifacts, and release metadata.

Major new features and UI enhancements:

• Public IP Display: The main window footer now shows the current public IP address, which is fetched in the background and auto-refreshes every minute. [1] [2] [3]
• Integrated Speed Test: A new "Speed Test" button and status indicator have been added, allowing users to run a network speed test from the UI. Results are displayed in real time, and the UI is updated with status and error handling. [1] [2] [3]

Build and release process improvements:

• Unified Versioning: The app version is now defined in app/main.py as APP_VERSION/VERSION and is used for the UI, build artifact naming, and release tagging. The build script (build_app.py) extracts this version for packaging, eliminating the need to manually sync version numbers across files. [1] [2] [3] [4] [5]
• Release Workflow Updates: The GitHub Actions workflow has been updated to use the new versioning scheme and build script, and now triggers on the stable branch instead of main. [1] [2] [3] [4]

Dependency and packaging updates:

• Dependencies: The required speedtest-cli dependency is now explicitly listed in pyproject.toml, and test dependencies are separated. The build process installs requirements from requirements.txt. [1] [2]

References:
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15]