Merge PR #130: Missing Buff - don't flag uncastable cross-faction targets (by Krathe)

# Conflicts:
#	CHANGELOG.md

Author: DanderBot

CHANGELOG.md

@@ -34,6 +34,7 @@
 ### Bug Fixes
 
 * (Range) The frame border (and other element borders) now reliably **fade out of range**, preserved across border re-renders. (by Krathe)
+* (Missing Buff) The missing-buff icon no longer flags a **cross-faction group member in the open world** as needing a buff you can't actually cast on them — it only appears where the buff is castable (e.g. inside instances). (by Krathe)
 * (Defensive Icon) The defensive cooldown icon and its border now render **above auras** and stay co-planar with the icon. (by Krathe)
 * (Role Icons) **Show Tank / Healer / DPS** toggles now apply live without a `/reload`, and are properly decoupled from the Hide-in-Combat gate. (by Krathe)
 * (Aura Designer) Indicators are torn down when the Aura Designer is disabled, and re-applied on **profile swap**. (by Krathe)

Frames/Icons.lua

@@ -809,7 +809,19 @@ function DF:UpdateMissingBuffIcon(frame, forceUpdate)
         missingBuffCache[frame] = nil
         return
     end
-    
+
+    -- Hide when we can't actually cast a beneficial spell on them — e.g. a
+    -- cross-faction group member in the open world, where a "buff missing"
+    -- icon is just noise because the buff is uncastable. UnitCanAssist flips
+    -- to true inside instances where buffing them IS possible, so the icon
+    -- only shows when it's actionable (mirrors Range.lua's cross-faction
+    -- handling; the reaction funcs return clean, non-secret booleans).
+    if not UnitCanAssist("player", unit) then
+        frame.missingBuffFrame:Hide()
+        missingBuffCache[frame] = nil
+        return
+    end
+
     -- Check for missing buffs
     local missingSpellID = nil
     local missingIcon = nil