fix: step text cursors by advance, not ink width

The date rendered as "16 /SEP /2026", each slash jammed against the
next glyph. measure() returns the ink width, which ignores leading and
trailing spaces because a space carries no ink, and clock.lua was using
it to advance a cursor. Measured: " / " covers 6px of ink but advances
14px, so every separator lost 8px.

Splits the two uses that were conflated in one function. measure() is
for centring and right-aligning, where ink width is what you want;
advance() returns x_advance and is for laying out runs of text left to
right. The clock's date now uses advance() and reads "16 / SEP / 2026"
with even gaps, verified by screenshot.

Worth the split rather than changing measure() in place: text_right is
a correct caller of the ink width, so one function cannot serve both
and silently returning the advance would have broken alignment
instead.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/widgets/clock.lua b/widgets/clock.lua
index 10f1dd8..978715e 100644
--- a/widgets/clock.lua
+++ b/widgets/clock.lua
@@ -49,7 +49,8 @@ function M.draw(cr, rect, colors)
   for _, p in ipairs(parts) do
     card.rgba(cr, p[2])
     card.text(cr, dx, dy, p[1])
-    dx = dx + card.measure(cr, p[1])
+    -- advance(), not measure(): the ink width of ' / ' omits its spaces.
+    dx = dx + card.advance(cr, p[1])
   end
 end