Extend SuPacket to match official shape (TargetCurrentHp/TargetMaxHp) (#436)

Every captured su packet from a live official session has 17 values
after the header, not 15:

  su 3 2847 2 1454174 0 12 11 200 0 0 1 100 3 0 0 21447 21450
  su 1 14293841 3 2847 240 7 11 257 0 0 1 175 0 4 0 175 175

The two new trailing integers carry the target's absolute HP for
player targets (21447/21450 ≈ real hp/maxhp). Monster targets ship
display-scaled values (0/175 on normal hits, max/max on the killing
blow). Without them the client parser misaligns and the kill-hit
collapse animation never plays.

Add TargetCurrentHp / TargetMaxHp as indices 15/16. No test refresh
needed — none exercise SuPacket serialization.

Bump to 16.6.0 on top of the 16.5.0 JobClass addition.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: erwan-joly

src/NosCore.Packets/NosCore.Packets.csproj

@@ -12,7 +12,7 @@
 		<RepositoryUrl>https://github.com/NosCoreIO/NosCore.Packets.git</RepositoryUrl>
 		<PackageIconUrl></PackageIconUrl>
 		<PackageTags>nostale, noscore, chickenapi, nostale private server source, nostale emulator</PackageTags>
-		<Version>16.5.0</Version>
+		<Version>16.6.0</Version>
 		<PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
 		<Description>NosCore's Packets (Nostale packets) defined over classes</Description>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>

src/NosCore.Packets/ServerPackets/Battle/SuPacket.cs

@@ -57,5 +57,11 @@ public class SuPacket : PacketBase
 
         [PacketIndex(14)]
         public int SkillTypeMinusOne { get; set; }
+
+        [PacketIndex(15)]
+        public int TargetCurrentHp { get; set; }
+
+        [PacketIndex(16)]
+        public int TargetMaxHp { get; set; }
     }
 }