feat: cross-platform installer (Windows port)
- install.py / uninstall.py: full Python installer for Linux, macOS, Windows
- detect_platform.py: shared Inkscape config path detection
- Windows config path: %APPDATA%\inkscape (native/winget/scoop) or
%LOCALAPPDATA%\Packages\org.inkscape.Inkscape* (MS Store)
- Windows desktop: Start Menu .lnk via PowerShell WScript.Shell COM object
- macOS: XDG / ~/Library/Application Support detection, no desktop step
- install.sh / uninstall.sh: reduced to one-line exec python3 wrappers
- eliminates SC1091 (source not followed) and SC2155 (declare+assign)
- scripts/detect_platform.sh: export INKSCAPE_CONFIG / INKSCAPE_INSTALL_METHOD
- fixes SC2034 (variables appear unused to shellcheck)
- assets/illuscape.ico: pre-rendered 16/32/48/64/128/256px ICO (ImageMagick)
- tests/test_install.py: pytest integration tests replacing test_install.bats
- cross-platform fake inkscape injected via PATH
- 12 tests covering backup, palettes, templates, prefs, uninstall restore
- ci.yml: add windows-latest matrix leg; shellcheck/inkscape Linux-only;
bats removed in favour of pytest integration tests; 27 tests total
pyr0ball
8e245dfe61