Adding the bones of the drafting system by removing the wall and siege towers from the base set and adding them temporarily as choices for the draft. Also adding Project_Context and Project_Roadmap documents to use with Claude

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

@@ -0,0 +1,52 @@
+// Assets/_Project/Scripts/Gameplay/Draft/NewTowerDraftOption.cs
+using UnityEngine;
+using TD.Towers;
+
+namespace TD.Gameplay.Draft
+{
+    /// <summary>
+    /// Draft choice #1 — "add a new tower to your arsenal". Grants the player a tower,
+    /// adding it to their <see cref="PlayerTowerDeck"/>.
+    /// </summary>
+    /// <remarks>
+    /// Only offered when the tower is in the match catalog AND the player doesn't already
+    /// own it, so the draft never wastes a slot on a no-op.
+    /// </remarks>
+    [CreateAssetMenu(fileName = "NewTowerOption", menuName = "TD/Draft/New Tower Option")]
+    public class NewTowerDraftOption : DraftOption
+    {
+        [Header("Payload")]
+        [Tooltip("The tower this option grants. Must also be present in the " +
+                 "TowerPlacementManager catalog (that's where its TowerTypeId comes from).")]
+        public TowerDefinition Tower;
+
+        public override bool IsValidFor(ulong clientId)
+        {
+            var deck = PlayerTowerDeck.GetForClient(clientId);
+            var pm   = TowerPlacementManager.Instance;
+            if (deck == null || pm == null || Tower == null) return false;
+
+            // Not in the catalog → no TypeId → can't be granted or placed.
+            if (!pm.TryGetTypeId(Tower, out int typeId)) return false;
+
+            // Only offer towers the player hasn't unlocked yet.
+            return !deck.Contains(typeId);
+        }
+
+        public override bool ServerApply(ulong clientId)
+        {
+            var deck = PlayerTowerDeck.GetForClient(clientId);
+            var pm   = TowerPlacementManager.Instance;
+            if (deck == null || pm == null || Tower == null) return false;
+
+            if (!pm.TryGetTypeId(Tower, out int typeId))
+            {
+                Debug.LogError($"[NewTowerDraftOption] '{Tower.name}' is not in the tower catalog; " +
+                               $"cannot grant. Add it to TowerPlacementManager.towerDefinitions.");
+                return false;
+            }
+
+            return deck.ServerGrantTower(typeId);
+        }
+    }
+}