d76b96b339
Add CaptureConformanceTests: drive one Scripted lifecycle, harvest all ten server-authored synchronize frames (InitNetwork/Matched/BattleStart/Deal/Swap/ Ready/TurnStart/TurnEnd/Judge/BattleFinish), re-serialize via MsgEnvelope.ToJson, and diff each against representative prod TK2 capture frames embedded as a fixture. Comparison is capture-subset-of-ours on body shape (recursive keys + value category), so missing/miscased/mistyped fields fail but extra envelope fields we emit don't; pure sequencing keys are excluded. Because PvP reuses the same ScriptedLifecycle builders for the handshake/mulligan frames, this transitively locks the PvP handshake shape -- a regression oracle that outlives the June-2026 server shutdown. Also replace the stale v1-only README with a pointer to the canonical docs/battle-node.md hub (outer repo). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>