draft options working; spells won't cast though

Assets/_Project/Scripts/Gameplay/Draft/BuilderSpellDraftOption.cs

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+// Assets/_Project/Scripts/Gameplay/Draft/BuilderSpellDraftOption.cs
+using UnityEngine;
+using TD.Core;
+using TD.Gameplay.BuilderSpells;
+
+namespace TD.Gameplay.Draft
+{
+    /// <summary>
+    /// Draft choice — "gain a builder spell". Grants the player a key-triggered active ability,
+    /// adding it to their <see cref="PlayerSpellLoadout"/>.
+    /// </summary>
+    /// <remarks>
+    /// Mirrors <see cref="BuilderEffectDraftOption"/>: carries the <see cref="BuilderSpellKind"/>
+    /// directly rather than an asset reference, since the enum value is the stable identifier
+    /// <see cref="PlayerSpellLoadout"/> and <see cref="BuilderSpellPool"/> already key off of.
+    /// <see cref="IsValidFor"/> also checks slot capacity — once
+    /// <see cref="PlayerSpellLoadout.MaxSpellSlots"/> is reached, no further spell options are
+    /// offered.
+    /// </remarks>
+    [CreateAssetMenu(fileName = "BuilderSpellOption", menuName = "TD/Draft/Builder Spell Option")]
+    public class BuilderSpellDraftOption : DraftOption
+    {
+        [Header("Payload")]
+        [Tooltip("The builder spell this option grants.")]
+        public BuilderSpellKind Kind;
+
+        public override bool IsValidFor(ulong clientId)
+        {
+            var loadout = PlayerSpellLoadout.GetForClient(clientId);
+            if (loadout == null) return false;
+            if (loadout.SlotCount >= PlayerSpellLoadout.MaxSpellSlots) return false;
+            return !loadout.PlayerHasSpell(Kind);
+        }
+
+        public override bool ServerApply(ulong clientId)
+        {
+            var loadout = PlayerSpellLoadout.GetForClient(clientId);
+            return loadout != null && loadout.ServerGrantSpell(Kind);
+        }
+    }
+}

Assets/_Project/Scripts/Gameplay/Draft/BuilderSpellDraftOption.cs.meta

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+fileFormatVersion: 2
+guid: a574e8aa74d8787f2b949300932af485