Refactor the frontend styling to use consistent design tokens and remove the hand-drawn/rotated aesthetic in favor of a cleaner, more standard UI.
- Replace hardcoded colors and border radii with CSS variables (e.g., `--default-border-color`, `--border-radius-lg`).
- Remove `transform: rotate(...)` and manual `box-shadow` offsets from various components (Sidebar, Dashboard, TemplatePicker, etc.).
- Update `Dashboard` to use a standard `ProgressBar` instead of a hand-drawn SVG chart.
- Standardize font families to use `--ui-font`.
- Clean up `TemplatePicker` logic to properly handle element grouping.
- Remove stale test result files and update `.last-run.json`.
Tomas Dvorak