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/Client/Presentation/FeelConfig.cs

@@ -34,6 +34,22 @@ namespace ProjectM.Client
         /// <summary>Milliseconds the FOV kick eases back to base.</summary>
         public static float HitStopDurationMs;
 
+        // ---- MC-3: player-dealt-hit punch (magnitude-scaled) + deferred enemy flash ----
+        /// <summary>Min FOV kick (deg) when the LOCAL player lands a hit on an enemy (chip damage).</summary>
+        public static float HitStopFovKickMin;
+        /// <summary>Max FOV kick (deg) on a heavy player-dealt hit (delta >= HitStopRefDamage).</summary>
+        public static float HitStopFovKickMax;
+        /// <summary>Reserved cap for the (deferred) true freeze-frame, in fixed frames.</summary>
+        public static int HitStopMaxFrames;
+        /// <summary>Damage delta that saturates the player-dealt punch to HitStopFovKickMax.</summary>
+        public static float HitStopRefDamage;
+        /// <summary>Tint for the (deferred) enemy material hit-flash — exposed now, wired in the ShaderGraph slice.</summary>
+        public static Color HitFlashColor;
+        /// <summary>Duration (ms) of the deferred enemy hit-flash.</summary>
+        public static float HitFlashDurationMs;
+        /// <summary>Master gate for the (deferred) true freeze-frame hit-stop. FALSE for v1 (camera-punch only).</summary>
+        public static bool HitStopFreezeEnabled;
+
         // ---- Feature 1/2: death camera punch ----
         /// <summary>Camera shake on LOCAL player death (loudest event by design).</summary>
         public static float PlayerDeathShake;
@@ -103,6 +119,13 @@ namespace ProjectM.Client
             HitSfxVolume = 0.70f;
             HitStopFovKick = 1.5f;
             HitStopDurationMs = 90f;
+            HitStopFovKickMin = 0.6f;
+            HitStopFovKickMax = 2.2f;
+            HitStopMaxFrames = 3;
+            HitStopRefDamage = 30f;
+            HitFlashColor = new Color(1f, 0.85f, 0.55f, 1f);
+            HitFlashDurationMs = 80f;
+            HitStopFreezeEnabled = false;
 
             // Feature 1/2 death
             PlayerDeathShake = 0.50f;