G6+G4: Cone damage-at-contact + zone fill telegraph (ZoneEffect GhostFields) + co-op saturation budget

Cone/SpecialSlam damage lands at its visual contact via ConeContactPending (knob 32, 0=legacy;
early-flush + resolve re-validate; death + BOTH class-swap paths drop armed pendings — fixes the
shipped melee death-strand in the same stroke). Zones: [GhostField] Caster/Radius/NextTick +
ZoneTelegraphSystem (Geyser latch contract on InterpolationTick; rim = true radius; arm grows,
persistent phase drains). Cone cues latch to contact (FireStartRaw, C14); TuningConfig.Defaults()
fallback at client cue sites (release-build timing fix). G4: SaturationMath ally-FX degrade
(living-enemy census, solo-exempt; enemy telegraphs structurally exempt) + CombatStressDebug +
overlay saturation rows. Reviews wf_98bf1268 (13 confirmed folded) / wf_9757d214 (5 confirmed fixed).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Assets/_Project/Scripts/Server/Combat/ZonePulseSystem.cs

@@ -26,7 +26,6 @@ namespace ProjectM.Server
     [UpdateBefore(typeof(EnemyAISystem))]
     public partial struct ZonePulseSystem : ISystem
     {
-        const uint k_PulsePeriodTicks = 30u;   // damage cadence (~0.5s at 60 ticks/sec)
         const float k_VortexPullSpeed = 4f;     // gentle inward drift for a Vortex (world units/sec)
         const float k_VortexDeadzoneSq = 0.25f; // don't re-aim (or NaN) an enemy already at the zone centre
 
@@ -49,7 +48,7 @@ namespace ProjectM.Server
             if (!serverTick.IsValid) return;
             uint now = serverTick.TickIndexForValidTick;
             uint stamp = TickUtil.NonZero(now);
-            uint reschedule = TickUtil.NonZero(now + k_PulsePeriodTicks);
+            uint reschedule = TickUtil.NonZero(now + ZoneEffect.PulsePeriodTicks);
             m_KnockbackLookup.Update(ref state);
             m_BossLookup.Update(ref state);