Combat: melee swing animation + live range slash-arc VFX (MC-4 polish)

Rukhanka swing animation: PlayerRigTools builds a procedural Root-bone PlayerMeleeSwing.anim and adds an IsAttacking param + MeleeSwing state to AC_PlayerTopDown (mirroring the enemy attack recipe -- no authored Synty Generic melee clip exists). PlayerAnimationDriveSystem pulses IsAttacking from the replicated MeleeCombo swing window (local + remote, NetworkTick wrap-safe, re-triggers per chained hit). CombatFeedbackSystem flashes a procedural cone slash-arc mesh matching the LIVE cleave range + half-angle on each swing (finisher wider/warmer) -- the arc IS the range telegraph. Addresses 'range isn't clear + no animation'.

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

Assets/_Project/Animation/AC_PlayerTopDown.controller

@@ -27,6 +27,31 @@ AnimatorState:
   m_MirrorParameter: 
   m_CycleOffsetParameter: 
   m_TimeParameter: 
+--- !u!1101 &-7833896337878999491
+AnimatorStateTransition:
+  m_ObjectHideFlags: 1
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: 
+  m_Conditions:
+  - m_ConditionMode: 1
+    m_ConditionEvent: IsAttacking
+    m_EventTreshold: 0
+  m_DstStateMachine: {fileID: 0}
+  m_DstState: {fileID: 4550302468649108848}
+  m_Solo: 0
+  m_Mute: 0
+  m_IsExit: 0
+  serializedVersion: 3
+  m_TransitionDuration: 0.05
+  m_TransitionOffset: 0
+  m_ExitTime: 0.75
+  m_HasExitTime: 0
+  m_HasFixedDuration: 1
+  m_InterruptionSource: 0
+  m_OrderedInterruption: 1
+  m_CanTransitionToSelf: 0
 --- !u!1101 &-1505565898738729052
 AnimatorStateTransition:
   m_ObjectHideFlags: 1
@@ -172,6 +197,12 @@ AnimatorController:
     m_DefaultInt: 0
     m_DefaultBool: 0
     m_Controller: {fileID: 9100000}
+  - m_Name: IsAttacking
+    m_Type: 4
+    m_DefaultFloat: 0
+    m_DefaultInt: 0
+    m_DefaultBool: 0
+    m_Controller: {fileID: 9100000}
   m_AnimatorLayers:
   - serializedVersion: 5
     m_Name: Base Layer
@@ -237,6 +268,33 @@ AnimatorState:
   m_MirrorParameter: 
   m_CycleOffsetParameter: 
   m_TimeParameter: 
+--- !u!1102 &4550302468649108848
+AnimatorState:
+  serializedVersion: 6
+  m_ObjectHideFlags: 1
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: MeleeSwing
+  m_Speed: 1
+  m_CycleOffset: 0
+  m_Transitions:
+  - {fileID: 8638400773933187460}
+  m_StateMachineBehaviours: []
+  m_Position: {x: 50, y: 50, z: 0}
+  m_IKOnFeet: 0
+  m_WriteDefaultValues: 1
+  m_Mirror: 0
+  m_SpeedParameterActive: 0
+  m_MirrorParameterActive: 0
+  m_CycleOffsetParameterActive: 0
+  m_TimeParameterActive: 0
+  m_Motion: {fileID: 7400000, guid: c819793eb6a73914b9875b1fe58b8626, type: 2}
+  m_Tag: 
+  m_SpeedParameter: 
+  m_MirrorParameter: 
+  m_CycleOffsetParameter: 
+  m_TimeParameter: 
 --- !u!1101 &5014557051428573475
 AnimatorStateTransition:
   m_ObjectHideFlags: 1
@@ -280,9 +338,13 @@ AnimatorStateMachine:
   - serializedVersion: 1
     m_State: {fileID: 1998880016702917871}
     m_Position: {x: 270, y: 130, z: 0}
+  - serializedVersion: 1
+    m_State: {fileID: 4550302468649108848}
+    m_Position: {x: 305, y: 195, z: 0}
   m_ChildStateMachines: []
   m_AnyStateTransitions:
   - {fileID: 5014557051428573475}
+  - {fileID: -7833896337878999491}
   m_EntryTransitions: []
   m_StateMachineTransitions: {}
   m_StateMachineBehaviours: []
@@ -318,3 +380,28 @@ AnimatorState:
   m_MirrorParameter: 
   m_CycleOffsetParameter: 
   m_TimeParameter: 
+--- !u!1101 &8638400773933187460
+AnimatorStateTransition:
+  m_ObjectHideFlags: 1
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: 
+  m_Conditions:
+  - m_ConditionMode: 2
+    m_ConditionEvent: IsAttacking
+    m_EventTreshold: 0
+  m_DstStateMachine: {fileID: 0}
+  m_DstState: {fileID: 0}
+  m_Solo: 0
+  m_Mute: 0
+  m_IsExit: 1
+  serializedVersion: 3
+  m_TransitionDuration: 0.1
+  m_TransitionOffset: 0
+  m_ExitTime: 0.9
+  m_HasExitTime: 0
+  m_HasFixedDuration: 1
+  m_InterruptionSource: 0
+  m_OrderedInterruption: 1
+  m_CanTransitionToSelf: 1