The player's Attack runs the attack validator's target pick: a friend selected retargets the nearest enemy in call order, a corpse or a fruitless scan says "You cannot attack that target.", nothing selected and no enemy says "There is nothing to attack." (#249) (#501)

The player's Attack (the Attack Target key, `AttackTarget()` and the Attack action button) now picks its target as 1.12.1's validator `0x612df0` does, where before it swung at whatever was selected, a friendly unit or a corpse included.

- With nothing selected, or a unit the player is friendly toward (reaction ≥ 4, `0x6130a3`), it runs the Tab cycler for the nearest enemy (`0x6130b5` → `0x493f60`), which commits the new selection at once, so `AttackTarget()` then `/cast` in one script casts at the new target.
- It then reads the selection again (`0x6130c1`): none raises "There is nothing to attack." (`0x6130d9`); a unit neither alive nor feigning, or one `CanAttack` (`0x606980`) rejects, raises "You cannot attack that target." (`0x613171`). A friendly unit with no enemy near stays selected and meets that second gate.
- The swing toggle runs only once a target is accepted (`0x6131a0`), so Attack at a corpse mid-swing gives the error and keeps the swing.
- The pet's attack order shares the same pick. vmangos stops a swing at a friendly or dead target server-side (`CombatHandler.cpp:46-59`), which the client no longer sends.

Fixes #249

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

crates/benilla-ui/src/script/calls.rs

@@ -24,8 +24,8 @@ pub enum ScriptCall {
     TargetLastTarget,
     /// `ClearTarget()` (`0x489ff0` → `0x493540(0,0)`), a no-op when nothing is selected by then.
     ClearTarget,
-    /// `AttackTarget()` (`0x489b50` → `0x6131a0(0,0)`): the attack toggle at the selection as it
-    /// stands then.
+    /// `AttackTarget()` (`0x489b50` → `0x6131a0(0,0)`): the attack validator's pick from the
+    /// selection as it stands then, which may move it to the nearest enemy, then the toggle.
     AttackTarget,
     /// `SpellTargetUnit(unit)` (`0x6e6d90`), made while the cursor was up.
     SpellTargetUnit(String),