Fix helper venv and gamepad discovery

[Staphylococcus]

Summary

• recreate the Python helper virtualenv during install so OS Python upgrades do not leave bscpylgtv installed under an old interpreter version
• filter gamepad discovery with udev metadata before opening evdev nodes, so known keyboard/mouse/power-button devices are skipped while joystick candidates still report real permission failures
• add DualSense-like discovery coverage for controllers that expose touch and motion metadata alongside joystick input

Validation

• bash -n install.sh uninstall.sh configure.sh bin/LG_Buddy_Common scripts/build-release-bundle.sh scripts/test-release-bundle.sh scripts/publish-release-assets.sh
• cargo fmt --all --check
• cargo test -p lg-buddy session::gamepad::devices --lib
• cargo test -p lg-buddy --lib
• release bundle smoke test with --skip-pip-install during local diagnosis

[Copilot]

Pull request overview

This PR improves installation robustness and gamepad discovery reliability by ensuring the Python helper virtualenv is recreated on install (avoiding breakage after OS Python upgrades) and by filtering input devices using udev metadata before attempting evdev inspection.

Changes:

• Recreate the helper Python virtualenv during install using python3 -m venv --clear.
• Add a release-bundle smoke-test assertion that stale venv contents are cleared during install.
• Introduce udev-based pre-filtering for /dev/input/event* nodes and add test coverage for joystick/mouse/keyboard classification and DualSense-like devices.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
scripts/test-release-bundle.sh	Adds a smoke-test marker to verify install clears stale venv contents.
install.sh	Recreates the Python helper venv with --clear to avoid stale interpreter-specific site-packages.
crates/lg-buddy/src/session/gamepad/devices.rs	Adds udev metadata parsing/classification to skip known non-gamepad devices before evdev open; expands tests.

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