Add antidote status cure item

tools/validate_data.ps1

@@ -94,7 +94,7 @@ $validConditionTypes = @(
 )
 $validTriggers = @("battle_start", "battle_begin", "turn_start", "unit_reaches_tile")
 $validActions = @("log", "dialogue", "set_objective", "spawn_deployment", "spawn_deployments")
-$validEffects = @("heal_hp", "heal_mp")
+$validEffects = @("heal_hp", "heal_mp", "cure_status")
 $validItemKinds = @("weapon", "armor", "accessory", "consumable")
 $validBonusStats = @("hp", "mp", "atk", "def", "int", "agi")
 $validSkillKinds = @("damage", "heal", "support")
@@ -686,8 +686,16 @@ function Check-Item-Effects() {
             if (-not $validEffects.Contains([string]$effect.type)) {
                 Fail "Item $itemId has unknown effect: $($effect.type)"
             }
-            if ([int](Get-Prop $effect "amount" 0) -le 0) {
-                Fail "Item $itemId effect $($effect.type) must have positive amount."
+            $effectType = [string]$effect.type
+            if ($effectType -eq "heal_hp" -or $effectType -eq "heal_mp") {
+                if ([int](Get-Prop $effect "amount" 0) -le 0) {
+                    Fail "Item $itemId effect $effectType must have positive amount."
+                }
+            } elseif ($effectType -eq "cure_status") {
+                $status = [string](Get-Prop $effect "status" "")
+                if ([string]::IsNullOrWhiteSpace($status) -or -not ($status -match '^[a-z0-9_]+$')) {
+                    Fail "Item $itemId cure_status effect must have a stable status."
+                }
             }
         }
     }