- Add `startup` automation condition type that activates on server boot,
replacing the per-target `auto_start` flag
- Remove `auto_start` field from targets, scene snapshots, and all API layers
- Remove auto-start UI section and star buttons from dashboard and target cards
- Remove `color` field from scene presets (backend, API, modal, frontend)
- Add card color support to scene preset cards (color picker + border style)
- Show localStorage-backed card colors on all dashboard cards (targets,
automations, sync clocks, scene presets)
- Fix card color picker updating wrong card when duplicate data attributes
exist by using closest() from picker wrapper instead of global querySelector
- Add sync clocks step to Sources tab tutorial
- Bump SW cache v9 → v10
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>