v0.6.0

What's Changed

• feat: advanced fills + effects + transparency + line styling (v0.5.0) by @thomas-villani in #18
• feat: authoring-feedback round — view-follow, geometry read, shapeid everywhere, placeholder geometry by @thomas-villani in #19
• Shape animations + deck structure & feedback batch by @thomas-villani in #20
• docs: complete v0.6 doc surface + consolidate roadmap by @thomas-villani in #21
• chore: finalize v0.6.0 changelog + gate release on tests by @thomas-villani in #22
• fix(tests): make fake Presentation.Path OS-independent (unblock release CI) by @thomas-villani in #23
• fix(tests): drop now-unused os import in conftest (ruff F401) by @thomas-villani in #24

Full Changelog: v0.5.0...v0.6.0