enhance immunity tracking with SPELL_GO cross-reference and improve combo point capture

Use SPELL_GO hit/miss data to skip redundant debuff scanning for CC/shared
immunity verification. Add stale entry cleanup (>2s) for pending debuffs.
Capture combo points at SPELL_CAST_EVENT (client-side, pre-server) for
reliable finisher duration tracking. Add SPELL_GO reactive ability detection
for yellow attack dodges replacing combat log text parsing.

Conditionals.lua

@@ -867,10 +867,16 @@ local HITINFO_GLANCING = 16384   -- 0x4000
 local HITINFO_CRUSHING = 32768   -- 0x8000
 local HITINFO_LEFTSWING = 4      -- 0x4 (Off-hand attack)
 
--- VictimState values
+-- VictimState values (from AUTO_ATTACK / SPELL_GO events)
+local VICTIMSTATE_UNAFFECTED = 0  -- Generic miss (seen with HITINFO_MISS)
+local VICTIMSTATE_NORMAL = 1      -- Hit landed
 local VICTIMSTATE_DODGE = 2
 local VICTIMSTATE_PARRY = 3
+local VICTIMSTATE_INTERRUPT = 4
 local VICTIMSTATE_BLOCKS = 5
+local VICTIMSTATE_EVADES = 6
+local VICTIMSTATE_IS_IMMUNE = 7
+local VICTIMSTATE_DEFLECTS = 8
 
 -- Aura cap status bitfield
 local AURA_CAP_BUFF_FULL = 1