c789d836f1
Step 8 (final) of multi-instancing migration. All per-battle statics now require a BattleAmbient scope — unwrapped writes throw InvalidOperationException (fail-fast forcing function). MultiInstanceEngineTests proves correctness: two parallel battles resolve independently, N=4/8/16 stress matches sequential baseline, GameMgr.GetIns throws without scope. Migration complete. EngineSessionGate gone. Suite fully green. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
SVSim.BattleNode
Socket.IO node-server emulation for in-battle real-time traffic — the second of prod's 4-server
topology. Handles Matched / BattleStart / Deal / per-action PlayActions / Echo /
TurnEnd between a client and a server-side opponent, for TK2 PvP and AI rank battles.
Documentation lives in the outer repo
This project's canonical reference is a single hub doc in the outer SVSim repo (this directory is an inner git repo, so the doc isn't tracked alongside the code):
→ docs/battle-node.md (from the SVSim root) — architecture, the dispatch matrix by battle
type, connect handshake + crypto, BattleFinish wire-result semantics, SIO/EIO event coverage,
reliability (pubSeq/playSeq/Gungnir), wire-format gotchas, where-to-extend, the manual smoke
walkthrough, and the consolidated open-items list.
Relative path from here: ../../../docs/battle-node.md.
Detailed per-URI wire shapes are in docs/api-spec/in-battle/; the hub links into them.
Keep docs/battle-node.md updated in the same change whenever you alter node behavior.