Update 2.129

Arena+ Multi Dark Aeon BattleEndHook scaffold (Lane 3) + RE of the end-of-battle teardown pipeline

• (new DLL capability: new read-only PolyHook2 detour on the battle cleanup function, plus fresh RE of the end-of-battle pipeline). RE done via IDA + idalib MCP — functions renamed and commented in work/reverse/ida/FFX_recon.i64 (GOLDEN RULE applied): FFX_Battle_EndCleanupDispatcher @ 0x79E650 (was sub_79E650), FFX_Battle_EffectFreeAtEnd @ 0x7FB090 (was sub_7FB090, emits the literal log "(op)\top_et_battle_effect_free( battle end )"), FFX_Battle_GetNextEncounterToken @ 0x7C5EE0 (was sub_7C5EE0). Discovered chain: FFX_Btl_MainBattleTick @ 0x790C60 calls the cleanup when sub_888CE0(0,0,0) has bit 0x20 set, before FFX_Battle_InitEncounterFromBtlbin chains the next battle or returns to field. New files: RuntimeTools/FfxHooksDll/hooks/BattleEndHook.{h,cpp} (full scaffold: detour, registerable callback, per-handle debounce, BattleEndEvent struct with effectHandle/nextEncounterTok/result/sequenceNo). 5 new RVAs in shared/ffx_addresses.h: RVA_FFX_BATTLE_END_CLEANUP_DISPATCHER, RVA_FFX_BATTLE_EFFECT_FREE_AT_END, RVA_FFX_BATTLE_GET_NEXT_ENCOUNTER_TOKEN, RVA_FFX_BATTLE_MAIN_TICK, RVA_FFX_BATTLE_END_EFFECT_HANDLE (= dword_1134564[1743] @ 0x11360A0). Gate: arena_plus_victory_hook.flag (env FFXHOOKS_ENABLE_ARENA_PLUS_VICTORY_HOOK=1); default OFF. Default callback ArenaPlus_OnBattleEnd in dllmain.cpp only LOGS — does NOT touch spira-arena-progress.json yet. 2 explicit TODOs for the RT2 spike with Halyson: (a) distinguish victory/defeat/escape via the sub_888CE0 bitmask; (b) map effectHandle -> progress_flag via correlation with the last ResolverLogHook match. The ArenaProgress_RecordCleared plug-in line is left commented and explained in code. PolyHook build PASS 12/12 cpp. Full doc at docs/reverse/FFX_ARENA_PLUS_BATTLE_END_HOOK_RE_2026-06-16.md. Reversibility: remove the flag = instant vanilla; the hook does not touch memory/return value

v2.128.0.1