coa.12: bigger main window with more visible rows (real size, not scale)

- AltoholicFrame 832x447 -> 832x555; AuctionFrame art bottom row re-anchored down
  + middle filler textures cover the gap; tab containers grown to match.
- Every scrolling tab shows more rows: 18px tabs VisibleLines 14->20, 41px tabs
  7/8->10; added matching $parentEntryN frames + extended scrollframes.
- Verified VisibleLines <= max entry per tab (no nil-row crash); luac + xmllint clean.
- Flagged for visual check: art seam at filler, decorative scrollbar track length.

Altoholic/Frames/Activity.lua

@@ -23,7 +23,7 @@ local ns = addon.Activity		-- ns = namespace
 local Characters = addon.Characters
 
 function ns:Update()
-	local VisibleLines = 14
+	local VisibleLines = 20
 	local frame = "AltoholicFrameActivity"
 	local entry = frame.."Entry"