feat: show free and total under each disk ring

Replaces the percentage, which the ring already draws as an angle. A number
repeating it costs a row in a column about 75px wide.

Free carries the threshold colour because it is the measured quantity; the
total is fixed and stays in the plain value colour, so each column has one
coloured number.

The cache card adopts card.truncate in the same pass: it was slicing names by
byte, which halves a multi-byte character.

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

2 files changed, 25 insertions, 9 deletions

diff --git a/widgets/cache.lua b/widgets/cache.lua
index 0aeb016..af20347 100644
--- a/widgets/cache.lua
+++ b/widgets/cache.lua
@@ -42,9 +42,9 @@ function M.draw(cr, rect, colors)
   local items = c.items or {}
   local names = {}
   for i, e in ipairs(items) do
-    local name = e.name
-    if #name > 18 then name = name:sub(1, 17) .. '\u{2026}' end
-    names[i] = name
+    -- By character, not byte: a cache directory can carry an accented name and
+    -- a byte slice cuts one in half, which Cairo draws as a replacement box.
+    names[i] = card.truncate(e.name, 18)
   end
 
   local row_n = #items
diff --git a/widgets/disks.lua b/widgets/disks.lua
index c5fec1e..3b0f221 100644
--- a/widgets/disks.lua
+++ b/widgets/disks.lua
@@ -67,7 +67,9 @@ function M.draw(cr, rect, colors)
   local n = #fs
   local per_row = n
   local cell_w = inner.w / per_row
-  local r = math.min(cell_w * 0.34, avail_h * 0.30)
+  -- 0.27 rather than 0.30: two rows sit under each ring now, not one, and the
+  -- radius is what gives up the height.
+  local r = math.min(cell_w * 0.34, avail_h * 0.27)
 
   if r >= 18 then
     for i, e in ipairs(fs) do
@@ -104,12 +106,26 @@ function M.draw(cr, rect, colors)
         card.text(cr, cx - sw_ / 2, cy + r * 0.55, sub)
       end
 
-      -- The percentage sits under the ring, in the threshold colour.
-      card.font(cr, card.FONT_MONO, label_size, false)
+      -- Free on top, total beneath, both centred under the ring.
+      --
+      -- The percentage that used to sit here is gone: the ring already draws
+      -- it as an angle, and a number repeating it costs a row in a column
+      -- about 75px wide. Free carries the threshold colour because it is the
+      -- measured quantity; the total is fixed, so it stays in `value`. One
+      -- coloured number per column, as the rest of the board reads.
+      local free_size = label_size
+      local total_size = label_size * 0.88
+      card.font(cr, card.FONT_MONO, free_size, false)
       card.rgba(cr, colour)
-      local pct = string.format('%d%%', e.pct)
-      local pw = card.measure(cr, pct)
-      card.text(cr, cx - pw / 2, cy + r + label_size * 1.7, pct)
+      local free_txt = card.human(e.avail) .. ' free'
+      local fw = card.measure(cr, free_txt)
+      card.text(cr, cx - fw / 2, cy + r + free_size * 1.7, free_txt)
+
+      card.font(cr, card.FONT_MONO, total_size, false)
+      card.rgba(cr, colors.value)
+      local total_txt = card.human(e.size)
+      local tw = card.measure(cr, total_txt)
+      card.text(cr, cx - tw / 2, cy + r + free_size * 1.7 + total_size * 1.4, total_txt)
     end
   else
     local step = label_size * 2.6