Phase 1 B1/B2/B4-B7: separation, poise, boss lunge, party HP scale, run-failed banner, fire anim

B1 SEPARATION: pairwise soft-collision pass INSIDE EnemyAISystem (sole
enemy-Position writer preserved; O(n^2) fine at MaxAlive<=14). Knocked/
lunging enemies keep committed motion but still push neighbours; the boss is
never pushed; enemies yield a small personal radius around players (below
melee range per review B1-1); displacement goes through the swept move so
nothing shoves through walls. SeparationMaxSpeed = live knob.

B2 POISE: the windup-cancel lived in the knockback CONTINUE branches (grunt/
charger/spitter). Threshold on the EXISTING KnockbackState.Speed channel:
light melee (6) nudges without interrupting; the finisher (10.8) and cone
(8) stagger as before. StaggerKnockbackSpeed = live knob (default 7).

B4 BOSS LUNGE: a telegraphed gap-closer on its own cooldown when the target
sits outside slam reach (repositioning - the slam stays the damage beat).
BossState.PendingAttack (server-only byte) disambiguates the shared windup
elapse (review-confirmed: naive reuse would SLAM on a lunge elapse);
LungeState.UntilTick spans windup+travel so the existing IsLunging ghost bit
replicates the tell, and the client draws a travel wedge instead of the slam
ring while it is set.

B5 PARTY HP SCALE: boss Health x(1 + 0.75/extra LIVING expedition player) at
spawn (not RunParticipant - dead-respawned members park at base). Max is a
GhostField so the bar stays truthful.

B6 RUN-FAILED BANNER: silent wipes used to land players home with zero
explanation. Client detects the (in-run)->Staging edge with a launch-cached
Charge (NEVER Returning - a 1-tick transient that precedes the bank by a
tick) and shows EXPEDITION FAILED for 6 s.

B7 FIRE ANIM: the class ability finally moves the body - a stateless window
from replicated AbilityCooldown.NextFireTick minus derived CooldownTicks
(works for predicted local + interpolated remotes, no cached edges).

456/456 EditMode; live Play smoke: launch -> 5 kills credit the room clear
through the corpse window -> boon window opens -> corpses expire clean, no
exceptions.

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

Assets/_Project/Scripts/Simulation/Combat/BossState.cs

@@ -27,5 +27,14 @@ namespace ProjectM.Simulation
 
         /// <summary>Earliest raw tick the boss may summon its next add pack (phase two only; NonZero; 0 = ready).</summary>
         public uint SummonReadyTick;
+
+        /// <summary>Earliest raw tick the boss may begin its next LUNGE wind-up (B4; NonZero; 0 = ready).</summary>
+        public uint LungeReadyTick;
+
+        /// <summary>Which attack the live AttackWindup belongs to: 0 = radial slam, 1 = lunge (B4 — slam and lunge
+        /// share the one replicated windup field; this server-only byte disambiguates the elapse branch). The client
+        /// distinguishes via the IsLunging ghost bit instead (BossAISystem holds LungeState.UntilTick through the
+        /// lunge wind-up + travel, so EnemyAISystem's derive turns the bit on).</summary>
+        public byte PendingAttack;
     }
 }