Replace the stacked-bar 18-hour forecast on the path calculator with
an SVG line chart that mirrors the look of the point-detail sparkline
on /map:
- polyline through every hour with per-tier stroke color
- score gridlines at 0 / 50 / 100
- white "now" marker outlined in the tier color
- highlighted best-hour dot with score label
- first / middle / last time labels along the x-axis
- Improving / Steady / Declining trend chip in the header
Rendered server-side in HEEx as a viewBox="0 0 300 96" SVG so it
scales responsively and inherits the daisyUI text color for axes.
The Best / Worst summary line under the chart is preserved.
Also fixes the Path Weather Avg card: the "Refrac Gradient" cell was
the only stat that split its units out onto a second line in a
smaller muted row. Move "N/km" up beside the value so the cell reads
the same as Pressure (mb), PWAT (mm), BL Depth (m), etc.
Graham McIntire
8121257c59