EB-2: felt spend - turrets burn a shared Charge pool, ledger-fed Fabricator mints it from Ore

Mined Ore now has an ongoing sink: a ledger-fed Fabricator converts Ore->Charge
(1 Ore -> 3 Charge / 30t) and turrets spend Charge per shot, soft-failing (no
shot, no cooldown burn) when the shared pool runs dry.

- ResourceId.Charge=4 rides the existing [GhostField] StorageEntry ledger (no new wire).
- TurretFireSystem: single ledger resolve + atomic spend / soft-fail / partial-refund.
- Fabricator.InputFromLedger (byte, server-only) feeds input from the shared ledger,
  read live in-loop so two machines split a finite pool; both modes deposit to ledger.
- HudSystem: violet Charge chip + global quiet-turret cue when siege && Charge==0.
- StorageMath.TotalOf backs the affordability read; catalog re-enables the Fabricator (4 entries).

See DR-033.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Assets/_Project/Scripts/Simulation/Economy/ResourceNode.cs

@@ -17,6 +17,9 @@ namespace ProjectM.Simulation
 
         /// <summary>Biomass — misc / crafting.</summary>
         public const byte Biomass = 3;
+
+        /// <summary>EB-2 turret munition ("Charge") — a ledger-only ammo currency a ledger-fed Fabricator mints from Ore.</summary>
+        public const byte Charge = 4;
     }
 
     /// <summary>