9ff8948903
Comment-only; behavior-preserving; 231 BattleNode tests green. - OutboundSequencer._archive: name the unbounded-per-match growth + ack-prune point. - NodeCrypto.BuildAes: SECURITY remarks on key-derived IV reuse + base64 entropy loss; warn against caching the session key. - MatchContext/BattlePlayer: FOOTGUN notes on reference-based record equality over the deck list. - RecordTokensFrom: TRUST note on isSelf/idx overwrite; name the idx>deckCount guard for untrusted peers (not added — trusted-LAN today). Co-Authored-By: Claude Opus 4.8 <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.