Hygiene B0-B1: correctness & latent traps

- Restore swallowed [Test] on EnemyAIMathTests.SlideVelocity_DegenerateNormal_DeflectsToTangent (dead regression guard for the shipped enemy-stuck-on-cover fix; now runs + passes).
- Extract shared HarvestMath.DepositYield used by ResourceHarvestSystem + MeleeComboSystem; fixes melee mining silently ignoring per-item StackMax (it hard-coded DefaultStackMax) and hoists the melee ledger-buffer fetch out of the per-target loop.
- StatMath.Apply switches on the raw byte (case (byte)ModOp.X) instead of casting to the enum inside the Bursted fold — removes the latent cross-assembly enum-in-Burst ICE trap.
- Add [Min] guards on CycleDirectorAuthoring loss-critical ints (CoreIntegrityMax>=1 so a mis-authored 0 can't bake an instant-loss core; siege sizes >=0).

456/456 EditMode tests pass.

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

Assets/_Project/Scripts/Simulation/Player/MeleeComboSystem.cs

@@ -187,6 +187,9 @@ namespace ProjectM.Simulation
                 // pool) just like a base projectile hit. SERVER-ONLY (this whole block) — interpolated node ghosts
                 // are never rolled back, so the deposit + destroy fire exactly once per swing.
                 bool haveLedger = SystemAPI.TryGetSingletonEntity<ResourceLedger>(out var ledgerEntity);
+                bool haveDb = SystemAPI.TryGetSingleton<ItemDatabase>(out var itemDb);
+                DynamicBuffer<StorageEntry> ledger = default;
+                if (haveLedger) ledger = SystemAPI.GetBuffer<StorageEntry>(ledgerEntity);
                 m_RegionLookup.Update(ref state);
                 m_InvLookup.Update(ref state);
                 var meleePlayerByConn = new NativeHashMap<int, Entity>(8, Allocator.Temp);
@@ -272,22 +275,11 @@ namespace ProjectM.Simulation
                         // expedition / un-tagged target goes to the swinging player's PERSONAL inventory (spill to
                         // ledger), mirroring ResourceHarvestSystem. Only deplete if the yield landed somewhere —
                         // never consume a node for zero credit (e.g. no ledger singleton present).
-                        int remainder = amount;
-                        bool deposited = false;
-                        if (!harvToLedger[i]
-                            && meleePlayerByConn.TryGetValue(hc.OwnerId, out var meleePlayer)
-                            && m_InvLookup.HasBuffer(meleePlayer))
-                        {
-                            var inv = m_InvLookup[meleePlayer];
-                            remainder = InventoryMath.Deposit(inv, yieldId, amount, Tuning.DefaultStackMax, Tuning.InventoryMaxSlots);
-                            deposited = true;
-                        }
-                        if (remainder > 0 && haveLedger)
-                        {
-                            var ledger = SystemAPI.GetBuffer<StorageEntry>(ledgerEntity);
-                            StorageMath.Deposit(ledger, yieldId, remainder);
-                            deposited = true;
-                        }
+                        Entity meleeHarvester = Entity.Null;
+                        if (meleePlayerByConn.TryGetValue(hc.OwnerId, out var meleePlayer))
+                            meleeHarvester = meleePlayer;
+                        bool deposited = HarvestMath.DepositYield(yieldId, amount, harvToLedger[i], meleeHarvester,
+                            m_InvLookup, ledger, haveLedger, haveDb, itemDb);
                         if (!deposited)
                             continue;