NTFS load order, a title-sorted AddOns list, and tooltips at the cursor

- addons load in the order NTFS lists a folder, case-insensitive with an underscore before the letters, the order the vanilla corpus was written against and the one that decides which addon provides a shared library (2178)
- GetNumAddOns and the index form of every AddOn verb walk a title-sorted list that hides the Blizzard addons the server says to hide, and the character-select AddOns list is in title order (2175)
- SetPoint and SetAllPoints raise the reference's own errors for a frame name that does not exist or an omitted relative frame instead of quietly anchoring to the parent, and an explicit nil means the screen root (2176)
- a tooltip owned with ANCHOR_CURSOR follows the mouse, which pfUI's tooltip, xpbar and chat modules, pfQuest's browser and TipBuddy ask for; an omitted or unknown anchor is ANCHOR_LEFT (2176)
- a $parent name handed to CreateFrame, CreateTexture or CreateFontString expands as it does in XML, so FonzAppraiser's thirty dropdowns and pfQuest's search icon get the names they asked for (2176)

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

crates/benilla-app/src/ui_script/test_ui.rs

@@ -272,6 +272,13 @@ pub(super) const UIPARENT_STAND_INS: &str = r#"
         local named = {}
         for name, row in pairs(UIPARENT_MANAGED_FRAME_POSITIONS) do
             if not row.isVar then table.insert(named, name) end
+            -- …and every row's ANCHOR TARGET (`anchorTo`, l.1668), which is a different set: the
+            -- keys are the frames being MOVED, the targets are what they move relative to, and
+            -- several targets (`ActionButton1`, `MainMenuBarArtFrame`) are declared in files a
+            -- one-window kit never loads. An unresolvable name is a RAISE now (decision 2176), so
+            -- a target the kit is missing aborts `UIParent_ManageFramePositions` mid-pass where it
+            -- used to anchor to the parent and carry on.
+            if row.anchorTo then table.insert(named, row.anchorTo) end
         end
         benilla_seat(named)
         for _, name in ipairs({ "SlidingActionBarTexture0", "SlidingActionBarTexture1" }) do