MIDNIGHTNAMEPLATES — PHASE 11.7.3
PREVIEW STAGE OPTICAL CENTER FIX

BASELINE
Built from Phase 11.7.1, not the failed 11.7.2 centering experiment.
The confirmed dynamic per-page scrolling fix is preserved.

PREVIEW CHANGE
- Removed full-composition/bounds centering approach.
- Health + name + cast cluster is the visual anchor.
- Top auras no longer pull the complete preview upward.
- Core plate receives a stable slight downward optical offset.
- Cast bar receives only a small bounded correction.
- Bottom-anchored auras receive a small bounded correction.
- No post-layout centering timer.
- No live frame-bound measurement.
- No cumulative repositioning.

TEST FIRST
Enemy NPC + top auras + cast bar:
The core nameplate should now sit visibly lower and closer to the center of the
preview stage than Phase 11.7.2.

ALSO TEST
- Auras off.
- Cast bar off.
- Bottom aura anchor.
- Friendly Player.
- Friendly Pet Normal / Thin.
- Enemy Pet / Guardian / Totem.
- Every config page scroller still stops at its own content end.
- /reload: no Lua errors, taint, protected-action errors or FPS regression.

Runtime nameplates and summon source/CVar ownership are unchanged.
