v3.9.0

What's Changed

• fix(erd-editor): Fix what the 3.8.0 demo recordings found by @dineug in #447
• fix(erd-editor): Give the light theme its own palette and elevation by @dineug in #448
• feat(erd-editor): Draw the ERD table as the Flow card, its colour down the left edge by @dineug in #449
• feat(erd-editor): Zoom every scene with a pinch, and gate CI on per-file coverage by @dineug in #450

Full Changelog: v3.8.0...v3.9.0