fix: size the weather card to its content

The first draft placed every band at a fixed pixel offset and let the
arc absorb whatever height was left. In a 1x2 cell on this monitor that
is 794px of arc: a cathedral arch under a fifth of a card of content,
nothing like the mockup it was shaped after.

Three changes, all visible in an offscreen render of the real widget:

- Type sizes and band offsets scale with the rect, within clamps, so the
  proportions hold on the 1920 monitor as well as this one.
- The arc gets a bounded band that follows the stats instead of being
  pinned to the bottom, so no dead strip opens between them.
- The layout gives the widget a 1x1 cell. Its content is about 350px
  tall and a full-height cell cannot be filled without inventing data.

Found before restarting conky by loading conky's own cairo bindings
standalone and rendering the widget to a PNG, which is a far tighter
loop than install, restart, switch workspace, screenshot.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/docs/superpowers/plans/2026-09-17-weather-widget.md b/docs/superpowers/plans/2026-09-17-weather-widget.md
index 01cd767..14bf11f 100644
--- a/docs/superpowers/plans/2026-09-17-weather-widget.md
+++ b/docs/superpowers/plans/2026-09-17-weather-widget.md
@@ -1065,7 +1065,10 @@ In `dashboard.lua`, replace the `layout` table:
 ```lua
 local layout = {
   { widget = 'clock', col = 1, row = 1, w = 1, h = 2 },
-  { widget = 'weather', col = 2, row = 1, w = 1, h = 2 },
+  -- 1x1, not 1x2: the card's content is about 350px tall, so a full-height
+  -- cell left a dead band down its middle. A single-row cell is as tall as
+  -- what it holds.
+  { widget = 'weather', col = 2, row = 1, w = 1, h = 1 },
 }
 ```
 
@@ -1182,7 +1185,11 @@ with a dot between the two times.
 Compare against `idea1.png`. Likely first-pass problems, each fixed in
 `widgets/weather.lua` and re-screenshotted:
 - Text overflowing the card's right edge: reduce the font size or shorten the label.
-- The arc cramped or overlapping the stats: adjust the `ry2 + 10` offset.
+- The arc cramped or overlapping the stats: adjust the offsets in `draw()`.
+- Proportions wrong in the other direction, which is what actually happened:
+  the first draft let the arc absorb all leftover height and drew a 794px
+  arch. The widget now scales its type to the rect and bounds the arc band,
+  and the layout gives it a 1x1 cell.
 - The sun dot off the curve: the Bezier evaluation and the drawn curve have
   diverged, which means the control points differ between them.