Slice Combat Depth (MC-3 + wiring + review fixes): Spitter aim-line + player-hit punch, rigged enemies, in-band gate (DR-041)

Completes the Combat Depth slice on top of the MC-2 server spine (56cf60cce):

MC-3 impact juice (client, observe-only):
- 7 FeelConfig fields + ResetDefaults; magnitude-scaled player-dealt-hit camera
  PunchFov on the enemy-Health-decrease edge (camera-only hit-stop, never timeScale).
- Spitter Kind==2 aim-LANE telegraph (BuildLaneMesh) — reads baked SpitterState
  client-side, falls back to a fixed length. True freeze + material flash deferred.

Content / wiring:
- SpitterProjectilePrefabAuthoring (the SpitterProjectilePrefab singleton).
- Both directors rebuilt to a 4-entry KIND-INDEXED roster [Grunt,Charger,Spitter,
  Swarmer] + mix/MaxAlive config + the SpitterProjectileConfig singleton in the subscene.
- Real rigged models: EnemySpitter (re-skinned Kaiju, ranged poker) + EnemySwarmerUndead
  (Undead-Werewolf, fast/low-HP); grunt/charger keep Werewolf/ChargerMuscle. EnemySpit =
  ownerless interpolated ghost (no Health, no collider).

Post-impl adversarial review fixes (wf_febdcfdb-665):
- [MED] in-band fire gate: the Spitter committed its telegraph from ANY range (fired while
  advancing from far). Now commits only when sInBand || sCornered (gives CorneredRange a
  real read site) — a Spitter out-of-band holds fire and repositions.
- [LOW] EnemyProjectileDamageSystem early-returns on !ServerTick.IsValid (sibling parity).
- [LOW] EnemyAuthoring bake-time guard: errors if a prefab composes both Charger+Spitter
  (would match zero AI passes -> never move).
- [LOW] tests: Spitter brain fires from Expedition (kills the Base==0 region false-green);
  a direct partition-exclusion test replaces the order-masked claim; added out-of-band +
  cornered negative tests.

388/388 EditMode green + two Play smokes (clean boot, fire, swept-hit, region, server==
client; rigged Kaiju spitter bakes + fires with zero console errors). Accepted as-is
(documented in DR-041): global spit soft-cap, co-op punch attribution.

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

Assets/_Project/Scripts/Authoring/Combat/EnemyAuthoring.cs

@@ -61,6 +61,10 @@ namespace ProjectM.Authoring
                 byte kind = ZoneEnemyMath.KindGrunt;
                 byte windup = (byte)Tuning.AttackWindupTicks;
                 var spitter = GetComponent<SpitterAuthoring>();
+                // Bake-time guard (DR-041 sole-Position-writer invariant): a prefab must carry at most ONE of
+                // {ChargerAuthoring(LungeState), SpitterAuthoring(SpitterState)} — both would match ZERO AI passes.
+                if (GetComponent<ChargerAuthoring>() != null && spitter != null)
+                    Debug.LogError($"Enemy '{authoring.name}' has BOTH ChargerAuthoring and SpitterAuthoring; it would match no AI pass and never move. Remove one.", authoring);
                 if (GetComponent<ChargerAuthoring>() != null) { kind = ZoneEnemyMath.KindCharger; windup = 30; }
                 else if (spitter != null) { kind = ZoneEnemyMath.KindSpitter; windup = (byte)Mathf.Clamp(spitter.WindupTicks, 1, 255); }
                 else if (GetComponent<SwarmerAuthoring>() != null) { kind = ZoneEnemyMath.KindSwarmer; windup = 6; }

Assets/_Project/Scripts/Authoring/Combat/SpitterProjectilePrefabAuthoring.cs

@@ -0,0 +1,36 @@
+using ProjectM.Simulation;
+using Unity.Entities;
+using UnityEngine;
+
+namespace ProjectM.Authoring
+{
+    /// <summary>
+    /// MC-2 — authoring for the <see cref="SpitterProjectilePrefab"/> subscene singleton. Place ONE on a GameObject in
+    /// the gameplay subscene; the server EnemyAISystem Spitter pass reads it via <c>GetSingleton</c> to know which spit
+    /// ghost to instantiate and the concurrent soft-cap. The referenced prefab is the EnemyProjectile ghost
+    /// (EnemyProjectileAuthoring); MaxLiveProjectiles bounds the relevancy loop — a Spitter at/over the cap soft-fails
+    /// its shot (no cooldown burn). The carrying entity has no transform; only the referenced prefab needs one.
+    /// </summary>
+    public class SpitterProjectilePrefabAuthoring : MonoBehaviour
+    {
+        [Tooltip("The EnemyProjectile ghost prefab that Spitters fire (must carry EnemyProjectileAuthoring + an interpolated GhostAuthoringComponent).")]
+        public GameObject ProjectilePrefab;
+
+        [Min(1), Tooltip("Max concurrent live spit projectiles across all Spitters (soft-cap; over it a Spitter soft-fails its shot).")]
+        public int MaxLiveProjectiles = 24;
+
+        private class SpitterProjectilePrefabBaker : Baker<SpitterProjectilePrefabAuthoring>
+        {
+            public override void Bake(SpitterProjectilePrefabAuthoring authoring)
+            {
+                var entity = GetEntity(authoring, TransformUsageFlags.None);
+                AddComponent(entity, new SpitterProjectilePrefab
+                {
+                    Prefab = authoring.ProjectilePrefab != null
+                        ? GetEntity(authoring.ProjectilePrefab, TransformUsageFlags.Dynamic) : Entity.Null,
+                    MaxLiveProjectiles = authoring.MaxLiveProjectiles,
+                });
+            }
+        }
+    }
+}

Assets/_Project/Scripts/Authoring/Combat/SpitterProjectilePrefabAuthoring.cs.meta

@@ -0,0 +1,2 @@
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