Unholy Death Knight Target Helper

## [1.1.0] - 2026-03-21

### Added

- **Configurable Epidemic threshold**

  - New options panel section: ± buttons to set the enemy breakpoint for Epidemic (range 2–6, default 4)

  - Army of the Dead breakpoints (Epidemic / Necrotic Coil / Graveyard) scale relative to the configured threshold

  - Setting persists across sessions via `AoeDKDB.epidemicThreshold`

  - Localized label: English `"Epidemic threshold"` / Spanish `"Umbral de Epidemia"`

- **Combat fade animations**

  - Fade-in (0.3s) when entering combat (`PLAYER_REGEN_DISABLED`)

  - Fade-out (0.4s) when leaving combat (`PLAYER_REGEN_ENABLED`); frame hidden only after fade completes

  - Re-entering combat mid-fade cancels the hide gracefully

- **Icon tooltip**

  - Hovering the icon shows the suggested spell name (or drag hint when unlocked)

  - Works in both locked and unlocked states

### Fixed

- **Variable scoping bug** — `currentSpellID`, `forceShow` and `detectionMode` were declared after `ShowAnchor`/`HideAnchor`, causing those functions to read/write a different global instead of the intended local. Declarations moved before both functions.

- **Reset wiped all settings** — `/aoedk reset` and the Reset button now only clear position fields (`point`, `relPoint`, `x`, `y`); icon size, alpha, text visibility and detection mode are preserved.

- **`detectionMode` not persisted** — Mode is now saved to `AoeDKDB.detectionMode` on every change and restored on `ADDON_LOADED`.

- **Drag guard** — `OnDragStart` now checks `isUnlocked` before calling `StartMoving`; the frame can no longer be accidentally dragged while locked.

- **`frame:EnableMouse(false)` after lock removed** — Mouse input stays enabled at all times so the tooltip works regardless of lock state. Dragging is gated by the `isUnlocked` check instead.

- **`/aoedk auras` iteration** — Replaced hardcoded `for i = 1, 40` loops with `AuraUtil.ForEachAura()` to correctly iterate all auras without an arbitrary cap.

- **Redundant `AoeDKDB = AoeDKDB or {}`** — Removed ~10 duplicate guards from button callbacks and `OnDragStop`; `AoeDKDB` is guaranteed to be initialized by `ADDON_LOADED` before any interaction is possible.

### Performance

- **`UNIT_AURA` scope** — Changed from `RegisterEvent` to `RegisterUnitEvent("UNIT_AURA", "player")`. The event no longer fires for every unit in range, only for the player's own auras.

- **Class/spec cache** — `UnitClass("player")` and `GetSpecialization()` results are cached in `cachedClassID`/`cachedSpecIndex` and refreshed only on `PLAYER_SPECIALIZATION_CHANGED` and `PLAYER_ENTERING_WORLD`. `UpdateIcon()` no longer calls these APIs on every tick.

- **`UnitExists("target")` deduplicated** — Called once at the top of `GetEnemyCount()` and reused via a local `hasTarget` variable instead of three separate calls.

- **Options panel height** — Increased from 310 to 360 px to accommodate the new threshold controls.