fix: improve endgame clock and gameplay stability

docs/battle-investigation.md

@@ -1,5 +1,16 @@
 # Battle investigation — 2026-10-16
 
+## Aha target when entering battle
+
+The scene's `SceneCastSkillCsReq.CasterId` identifies the attacking actor;
+scene actor entity IDs are lineup slot + 1. The technique path also recognizes
+the avatar entity namespace. When that actor is present in the battle lineup,
+the server now sends its battle slot in the Aha Global and Aha's Help buffs'
+`TargetIndexList`. The configured passive owner and Aha Help owner are
+unchanged. Requests without a resolved player actor, including monster ambushes
+and direct stage entry, retain the previous target. This protocol-target mapping
+still requires an in-Client check of the resulting Aha effect.
+
 ## หลักฐานที่ใช้อ้างอิง
 
 - Upstream: [HonkaiSlopRail/pearl-sr](https://git.xeondev.com/HonkaiSlopRail/pearl-sr)