Update DashboardPage and DashboardContentSwap to receive the list of
tablos so the sidebar can display real project data. Extract tablo icon
palette logic into a new tabloicons package that maps hex colors to
presentation attributes (icon, background, foreground colors).
Update handlers to load tablos from the repository before rendering
dashboard views. Refactor TabloCardView to use icon presentation instead
of initials when available.
backend
Create the foundational structure for managing design-system CSS with
co-located sources and semantic tokens:
- Add `cmd/buildstyles` to concatenate ordered CSS sources into a single
shipped stylesheet
- Define semantic color and effect tokens in `internal/web/ui/base.css`
- Move primitive and catalog CSS sources from `static/css/` to
co-located locations under `internal/web/ui/`
- Update test contract to verify token presence and proper stylesheet
generation
- Regenerate `static/styles.css` with new semantic token layer and
source annotations
