Equipment: weapon-granted abilities + gear mods (DR-027 Phase 1)

Equipment slots reusing the AbilityRef/StatModifier machinery: EquipmentSlot [GhostField] buffer (index=slot), server-only event-driven EquipSystem (RPC). Weapon -> AbilityRef.Id swaps the attack (prefab + base stats, prediction-correct); gear -> StatModifiers tagged a reserved per-slot EquipSourceId, stripped target-agnostically via RemoveBySourceId. Item mods are INLINE on ItemDefBlob (a nested BlobArray reads empty under the by-value TryGetItem copy). Atomic equip-over swap (no item loss); DefaultAbility restores the unarmed ability on weapon-unequip. Client keys + build-safe hooks; HUD equipment panel + click-to-equip. 4 catalog weapon/gear items wired + re-baked.

Play-validated host+client: weapon equip swaps AbilityRef on both worlds, gear folds into EffectiveCharacterStats, unequip reverses + restores DefaultAbility, all replicated to the owner. See DR-027.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/_Project/Scripts/Simulation/Tuning.cs

@@ -64,5 +64,15 @@ namespace ProjectM.Simulation
 
         /// <summary>Default per-slot stack cap when an item has no ItemDatabase entry (the catalog is optional at runtime).</summary>
         public const int DefaultStackMax = 999;
+
+        // ---- Equipment stat-mod SourceIds (EquipSystem) ----
+        //   One DISTINCT sentinel per slot: slot i tags its mods with EquipSourceIdBase + i. All of a slot's
+        //   inline mods share that one id and are stripped target-agnostically via
+        //   TimedModifierUtil.RemoveBySourceId on unequip/swap. Full StatModifier SourceId map (keep DISJOINT):
+        //   0u = pickups + debug-injection; 0x00A0E711 = ability-damage upgrade; 0x00DEB061 = debug stat command;
+        //   0x00E91000.. = equipment (4 slots).
+
+        /// <summary>Base for per-slot equipment SourceIds; slot i tags its mods with <c>EquipSourceIdBase + i</c>.</summary>
+        public const uint EquipSourceIdBase = 0x00E91000u;
     }
 }