batter 0.10.0 — The Chain + The Ledger

Additive release (ENGINE_VERSION stays 0.9.0 — zero receipt breaks). chain/1: hash-linked deployment records with exact P&L roll-forward verification + batter verify --chain; order-state machine modeling CTF V2 semantics (incl. venue-reject via failed transaction poll). trials/1: run_many + TrialLedger + running DSR (per-run hashes byte-identical to standalone). portfolio/1: multi-leg receipts with provenance pins + correlations. Regime-stability block, SportsEventContract. 802 tests; verify swarm SHIP zero blockers; 64-pair state enumeration pinned. The provenance line is complete: backtest receipt → paper chain → (gated) live chain, all one verify command.