fix(sync): enforce THROTTLE as hard floor on threat broadcasts

Large threat deltas could bypass the 0.4 s gate entirely, sending
unbounded SendAddonMessage traffic in early combat (3.3.5 servers
disconnect chatty senders). Throttle now always applies; the
MIN_DELTA filter is checked separately afterwards.

Omen/OmenSync.lua

@@ -34,7 +34,7 @@ local Omen = LibStub("AceAddon-3.0"):GetAddon("Omen")
 if not Omen then return end
 
 local PREFIX     = "OMSYNC"
-local THROTTLE   = 0.4   -- min seconds between sends per (subject, mob)
+local THROTTLE   = 0.4   -- hard floor: min seconds between sends per (subject, mob)
 local STALE      = 8     -- seconds; entries older than this are ignored
 local MIN_DELTA  = 0.05  -- 5%; smaller changes don't trigger a send
 
@@ -98,7 +98,8 @@ function Omen:SyncBroadcastThreat(subjectGUID, mobGUID, value, isTanking)
         local age = now - prev.time
         local maxV = math.max(value, prev.value, 1)
         local pct = math.abs(value - prev.value) / maxV
-        if age < THROTTLE and pct < MIN_DELTA then return end
+        if age < THROTTLE then return end -- hard rate floor
+        if pct < MIN_DELTA then return end
     end
     lastSend[subjectGUID][mobGUID] = { value = value, time = now }