Hold the hover tooltip to the screen against the real font

The pixel-measured wrap passed the headless suite (which stubs text_width) but
failed three assertions under the real engine in the smoke harness:

- "Looking for:"/"Offers:" hints and the two-tone combo rows render at scale
  0.3 but the width budget -- and every other row -- is measured at 0.32, so a
  row that fit at 0.3 slipped over the budget once measured at 0.32 and clipped.
  Render those rows small as before, but bound their wrap at the 0.32 reference:
  a 0.3 row is narrower still, so it can only wrap early, never clip.
- wrap_measured word-split multi-word joker names, so a fusion's result read as
  "Fusion ready: Diamond" / "Bard ($12)" -- two jokers, not one. atomic() fuses
  a name or multi-word label into one unbreakable wrap token (spaces -> a \1
  sentinel, restored for measurement and output); applied to every joker name
  and tag label that flows through a wrapped row.

Smoke: 20/20 against the real Card:generate_UIBox_ability_table pipeline and the
real Fusion Jokers recipe table. Headless: 947 pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,12 @@
   Settings) instead of a button in the run HUD, which keeps the play screen
   clear. Same overlay, same tabs; Mods > Combo Advisor is unchanged.
 
+### Fixed
+- The Combo Advisor hover tooltip no longer runs off the edge of the screen:
+  every advice row is measured against the real font and wrapped to the card's
+  gutter, and a wrapped line never splits a joker name ("Diamond Bard" stays
+  whole rather than breaking across two rows).
+
 ### Fusion Jokers integration
 - When [Fusion Jokers](https://github.com/wingedcatgirl/Fusion-Jokers) is
   installed, hovering any joker that is a fusion component names the fusion it

main.lua

@@ -603,6 +603,16 @@ function JCA.row_width_budget()
     return (type(room) == 'number' and room > 0 and room or 20) * ROW_WIDTH_FRACTION
 end
 
+-- A joker name or multi-word label must never wrap mid-phrase -- "Fusion ready:
+-- Diamond" over one row and "Bard" over the next reads as two jokers. atomic()
+-- fuses a phrase's spaces into a sentinel that %S+ tokenisation treats as one
+-- word; wrap_measured restores them for both measurement and output. \1 never
+-- occurs in localized joker text. ONLY apply to text that goes through
+-- wrap_measured (text_row) -- a sentinel placed straight into a UIT node would
+-- render as tofu (labelled_row's label node does NOT wrap, so it stays plain).
+local NBSP = '\1'
+local function atomic(s) return (tostring(s):gsub(' ', NBSP)) end
+
 -- Word-wrap `str` to the measured budget, returning finished lines with the
 -- hanging `indent` already applied to continuations.
 --
@@ -621,7 +631,9 @@ function JCA.wrap_measured(str, scale, budget, indent)
     for word in tostring(str):gmatch('%S+') do
         local nxt = line and (line .. ' ' .. word) or word
         local limit = #lines == 0 and budget or budget - pad
-        if line and JCA.text_width(nxt, scale) > limit then
+        -- Measure with sentinels restored to real spaces: an atomic() phrase is
+        -- one %S+ token but its true width is the width of the spaced text.
+        if line and JCA.text_width((nxt:gsub(NBSP, ' ')), scale) > limit then
             lines[#lines + 1] = line
             line = word
         else
@@ -631,6 +643,7 @@ function JCA.wrap_measured(str, scale, budget, indent)
     if line then lines[#lines + 1] = line end
     if #lines == 0 then return {''} end
     for i = 2, #lines do lines[i] = indent .. lines[i] end
+    for i = 1, #lines do lines[i] = (lines[i]:gsub(NBSP, ' ')) end
     return lines
 end
 
@@ -774,9 +787,15 @@ local function tooltip_rows(card)
     -- body wraps beneath it, which keeps the colour split readable instead of
     -- splitting a coloured phrase mid-word across rows.
     local function labelled_row(label, label_colour, body)
+        -- Render small so "name: reason" fits one row more often, but bound the
+        -- width at the SAME 0.32*S reference the budget and every other row are
+        -- measured against -- a row drawn at 0.3 is narrower still, so this can
+        -- only ever wrap early, never clip. (Measuring the wrap at 0.3 let a
+        -- body line that fit at 0.3 slip over the budget once measured at 0.32.)
         local scale = 0.3 * S
+        local ref = 0.32 * S
         local budget = JCA.row_width_budget()
-        if JCA.text_width(label .. body, scale) <= budget then
+        if JCA.text_width(label .. body, ref) <= budget then
             rows[#rows + 1] = {
                 {n = G.UIT.T, config = {text = label, colour = label_colour, scale = scale}},
                 {n = G.UIT.T, config = {text = body,
@@ -788,8 +807,8 @@ local function tooltip_rows(card)
             text = label, colour = label_colour, scale = scale}}}
         -- The label owns the line above, so EVERY body line is indented here,
         -- not just continuations -- reserve the indent for all of them.
-        local pad = JCA.text_width('  ', scale)
+        local pad = JCA.text_width('  ', ref)
-        for _, line in ipairs(JCA.wrap_measured(body, scale, budget - pad, '')) do
+        for _, line in ipairs(JCA.wrap_measured(body, ref, budget - pad, '')) do
             rows[#rows + 1] = {{n = G.UIT.T, config = {text = '  ' .. line,
                 colour = G.C.UI.TEXT_DARK, scale = scale}}}
         end
@@ -807,10 +826,13 @@ local function tooltip_rows(card)
             end
             if #labels > 0 then
                 -- One sentence, measured-wrapped, instead of a guessed
-                -- character count: text_row already bounds the width.
+                -- character count: text_row already bounds the width. Rendered at
+                -- the default scale (like the "No synergy" line above it) so its
+                -- wrap holds under the same budget every other row is measured by;
+                -- multi-word labels stay whole so "card enhancing" never splits.
                 local names = {}
-                for _, l in ipairs(labels) do names[#names + 1] = l.name end
+                for _, l in ipairs(labels) do names[#names + 1] = atomic(l.name) end
-                text_row(prefix .. table.concat(names, ', '), nil, 0.3 * S)
+                text_row(prefix .. table.concat(names, ', '))
             end
         end
     else
@@ -827,7 +849,7 @@ local function tooltip_rows(card)
         end
         if #partners > shown then
             local rest = {}
-            for i = shown + 1, #partners do rest[#rest + 1] = partners[i].name end
+            for i = shown + 1, #partners do rest[#rest + 1] = atomic(partners[i].name) end
             text_row('also: ' .. table.concat(rest, ', '), G.C.UI.TEXT_DARK)
         end
         if in_buy_area(card) and total >= JCA.config.threshold
@@ -873,9 +895,9 @@ local function tooltip_rows(card)
             local target, status, chain = JCA.copy_source_if_bought(key)
             local via = ''
             for _, link in ipairs(chain) do
-                via = via .. name_of(link.config.center.key) .. ' -> '
+                via = via .. atomic(name_of(link.config.center.key)) .. ' -> '
             end
-            local tname = target and name_of(target.config.center.key)
+            local tname = target and atomic(name_of(target.config.center.key))
             if status == 'ok' then
                 text_row('Will copy ' .. via .. tname .. ' as soon as it lands', G.C.GREEN)
             elseif status == 'incompatible' then
@@ -901,12 +923,13 @@ local function tooltip_rows(card)
         local ok, plans = pcall(JCA.fusion_plans, card)
         for i = 1, (ok and math.min(2, #plans) or 0) do
             local p = plans[i]
-            local rname = name_of(p.result)
+            local rname = atomic(name_of(p.result))
             local price = p.cost and (' ($' .. p.cost .. ')') or ''
             if not p.ready then
                 local want = {}
                 for _, m in ipairs(p.missing) do
-                    want[#want + 1] = (m.n > 1 and (m.n .. 'x ') or '') .. name_of(m.key)
+                    want[#want + 1] = atomic(
+                        (m.n > 1 and (m.n .. 'x ') or '') .. name_of(m.key))
                 end
                 text_row(('Fuses into %s%s - still needs %s')
                     :format(rname, price, table.concat(want, ', ')))
@@ -924,7 +947,7 @@ local function tooltip_rows(card)
             end
             if #p.loses > 0 then
                 local names = {}
-                for _, k in ipairs(p.loses) do names[#names + 1] = name_of(k) end
+                for _, k in ipairs(p.loses) do names[#names + 1] = atomic(name_of(k)) end
                 text_row('Fusing drops combos with: ' .. table.concat(names, ', '),
                     G.C.RED)
             end
@@ -1018,9 +1041,9 @@ local function tooltip_rows(card)
             -- Blueprint", which is the one answer that helps nobody.
             local via = ''
             for _, link in ipairs(chain) do
-                via = via .. name_of(link.config.center.key) .. ' -> '
+                via = via .. atomic(name_of(link.config.center.key)) .. ' -> '
             end
-            local tname = target and name_of(target.config.center.key)
+            local tname = target and atomic(name_of(target.config.center.key))
 
             if status == 'ok' then
                 text_row('Copying ' .. via .. tname, G.C.GREEN)
@@ -1039,7 +1062,7 @@ local function tooltip_rows(card)
             if status ~= 'ok' then
                 local best = JCA.best_copy_target(card)
                 if best then
-                    local bname = name_of(best.config.center.key)
+                    local bname = atomic(name_of(best.config.center.key))
                     text_row(key == 'j_brainstorm'
                         and ('Fix: make ' .. bname .. ' your leftmost joker')
                         or ('Fix: slot this just left of ' .. bname), G.C.GREEN)
@@ -1051,7 +1074,7 @@ local function tooltip_rows(card)
         -- next blind — worth shouting about while there is still time to reorder.
         local victim, safe = JCA.dagger_victim(card)
         if victim then
-            local vname = name_of(victim.config.center.key)
+            local vname = atomic(name_of(victim.config.center.key))
             if safe then
                 text_row(vname .. ' is Eternal - the blade cannot eat it', G.C.GREEN)
             else
@@ -1099,7 +1122,7 @@ local function consumable_rows(card)
     end
     if #fed > 0 then
         local names = {}
-        for _, f in ipairs(fed) do names[#names + 1] = f.name end
+        for _, f in ipairs(fed) do names[#names + 1] = atomic(f.name) end
         text_row('Feeds: ' .. table.concat(names, ', '))
     end
     -- A Standard Pack permanently adds playing cards, and Erosion is paid per