Reconcile /startattack against real action-bar state, not cached flag

The autoAttack flag could drift stale-true (optimistic set after
AttackTarget, or a target dying without PLAYER_LEAVE_COMBAT), making
/startattack skip the attack until the target was dropped and reselected.
The old fallback called the overridden IsCurrentAction, which just echoes
the cached flag for the attack slot, so it never detected drift. Use the
original Hooks.IsCurrentAction as ground truth and sync the flag to it.

Core.lua

@@ -3100,15 +3100,17 @@ end
 -- PERFORMANCE: Module-level action to avoid closure allocation per call
 local function _startAttackAction()
     if not UnitExists("target") or CleveRoids.IsUnitDead("target") then TargetNearestEnemy() end
-    -- Check both event-based flag AND action bar state for reliable detection
+    -- Ground truth is the real action-bar state, NOT the cached autoAttack flag.
+    -- The flag can drift stale-true (e.g. set optimistically after AttackTarget below,
+    -- or a target dying without PLAYER_LEAVE_COMBAT firing), which would make us wrongly
+    -- believe we're already swinging and skip the attack. Use the ORIGINAL API here:
+    -- the overridden global IsCurrentAction just echoes the cached flag for the attack
+    -- slot, so it can't detect drift. Fall back to the flag only if the slot is unknown.
     local isAttacking = CleveRoids.CurrentSpell.autoAttack
-    if not isAttacking then
-        -- Fallback: check action bar state via IsCurrentAction
-        local slot = CleveRoids.GetProxyActionSlot(CleveRoids.Localized.Attack)
-        if slot and IsCurrentAction(slot) then
-            CleveRoids.CurrentSpell.autoAttack = true
-            isAttacking = true
-        end
+    local slot = CleveRoids.GetProxyActionSlot(CleveRoids.Localized.Attack)
+    if slot then
+        isAttacking = CleveRoids.Hooks.IsCurrentAction(slot) and true or false
+        CleveRoids.CurrentSpell.autoAttack = isAttacking
     end
     if not isAttacking and not CleveRoids.CurrentSpell.autoAttackLock and UnitExists("target") and UnitCanAttack("player", "target") then
         CleveRoids.CurrentSpell.autoAttackLock = true