Slice 2 (WIP): class carrier (GoInGameRequest.ClassId) + Warrior cone archetype

The per-player class travels on GoInGameRequest.ClassId (client reads a ClassSelection
singleton); GoInGameServerSystem seeds the class at spawn via ClassTraits (AbilityRef +
permanent trait StatModifiers on a reserved ClassSourceId; CharacterStatsRef stays Default
so the DRG-asymmetry deltas ride the replicated OwnerSendType.All buffer). AbilityFireSystem
gains the aim-directed Cone archetype: cooldown predicted both worlds, server-only cone
damage to living enemies (same-tick, SourceTick-stamped, like the melee cleave). 345/345.

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

Assets/_Project/Scripts/Simulation/Tuning.cs

@@ -76,9 +76,13 @@ namespace ProjectM.Simulation
         //   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).
+        //   0x00E91000.. = equipment (4 slots); 0x00C1A550.. = class traits (Slice 2, permanent).
 
         /// <summary>Base for per-slot equipment SourceIds; slot i tags its mods with <c>EquipSourceIdBase + i</c>.</summary>
         public const uint EquipSourceIdBase = 0x00E91000u;
+
+        /// <summary>Slice 2: base SourceId for a class's permanent trait StatModifiers (Warrior/Ranger seeds).
+        /// DISJOINT from equipment/upgrade/debug ranges; class traits are NEVER stripped (permanent per session).</summary>
+        public const uint ClassSourceId = 0x00C1A550u;
     }
 }