MIDNIGHTNAMEPLATES — PHASE 11.10
BLIZZARD COEXISTENCE / CLEANUP

GOAL
Make Blizzard/Midnight visual ownership deterministic and remove development-only
diagnostics before real gameplay validation.

COEXISTENCE HARDENING
- Blizzard suppression is now idempotent per base plate.
- Removed three delayed suppression timers from every suppression call.
- Each plate gets at most one queued next-frame suppression reassert.
- Secure Show/SetAlpha hooks remain the primary protection against Blizzard
  visuals leaking back through.
- Global suppression sweeps are coalesced.
- Threat/combat state changes no longer schedule multiple duplicate sweeps.
- 1-second safety pulse from Phase 11.9 remains as a low-frequency fallback.

CLEANUP
- Removed temporary /mnpsummon full diagnostic command.
- Removed temporary NAME_PLATE_UNIT_ADDED diagnostic capture.
- Removed PRINT FULL SUMMON DIAGNOSTIC button from the public Summons UI.
- /mnpsummoncheck validation helper is retained as a lightweight support check.

UNCHANGED
- Manual Blizzard Minions source architecture.
- Zero automatic summon-source CVar ownership.
- Phase 11.7.4 preview calibration.
- Dynamic per-page scrollers.
- Phase 11.8 profiles/import/export.
- Normal/Thin summon styles and customization.

TEST
1. Crowded city with Friendly Player Nameplates enabled.
2. Rotate camera through many players and check FPS.
3. Target/focus/mouseover repeatedly.
4. Enter/leave combat.
5. Enemy casts and threat transitions.
6. Watch for any Blizzard health bar/name/cast visuals flashing through.
7. Friendly players: no duplicate Blizzard plate.
8. Friendly pet/minion with Blizzard Minions manually enabled.
9. Disable/re-enable Midnight friendly pet rendering.
10. Enemy pet/minion, guardian/totem if available.
11. /reload and login: no hang/spike.
12. Verify /mnpsummoncheck still works.
13. Profiles/import/export still work.
14. No Lua errors.
15. No ADDON_ACTION_BLOCKED/FORBIDDEN.
16. No secret-value errors.
17. No meaningful FPS regression versus 11.9.

PASS
If clean, move to Phase 11.11 — Real Gameplay Validation.
