fix: resolve all ruff lint errors (#7)

* fix: resolve all ruff lint errors

- Remove unused variable assignments (share.py, browser_bridge.py, windows.py, test_highlevel.py)
- Add noqa comment for Quartz import needed by ApplicationServices (darwin.py)
- Remove unused TYPE_CHECKING import (storage/__init__.py)
- Add proper TYPE_CHECKING import for CaptureStats annotation (generate_real_capture_plot.py)
- Auto-fix import sorting across multiple files

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* docs: update README with share command and ecosystem links

- Uncomment PyPI badges (package now published as 0.3.0)
- Add "Sharing Recordings" section with Magic Wormhole usage
- Update openadapt-privacy from "Coming soon" to GitHub link
- Add share extra to optional extras table
- Add openadapt-privacy and openadapt-evals to Related Projects

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* docs: remove redundant openadapt-ml training section

The detailed training workflow belongs in openadapt-ml's README.
This keeps openadapt-capture focused on its core functionality.
Users can find training info via the Related Projects link.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: abrichr