v2.20.0

Features

• Pendle PT accounting vertical — completes Principal-Token accounting on the
  2.19.0 PT/YT price foundation: PT Accountant gate (matrix + CLI + QA checklist),
  typed PendleAccountingEvent cells, open-PT mark-to-market via the gateway
  implied-price, realized-yield PnL on disposal, held-PT inventory in the
  dashboard, PT/YT price telemetry, and a pendle_basics demo.
• CAIP-2 / CAIP-19 identity layer — additive interop for chain ids
  (eip155:42161) and asset ids, built on a new typed TokenRef;
  resolve("eip155:42161") ≡ resolve("arbitrum"). Native slip44 for ETH-chains,
  Solana, Polygon, Avalanche, BSC, Berachain.
• Pre-submit feasibility preflight — connectors reject structurally-doomed
  intents (GMX exec-fee, Stargate native-fee, Euler LTV, Pendle expiry) before
  paying gas on a revert.
• LP_CLOSE amount="all" chaining — size an LP close from the prior open's
  minted balance inside an IntentSequence.
• Backtesting: address-keyed strategies in the PnL engine.

Changed

• Bounded gateway price aggregation — new
  ALMANAK_GATEWAY_PRICE_AGGREGATOR_TIMEOUT_SECONDS (default 15s).

Fixes

• Market data: LWAP across all V3 forks + Aerodrome Slipstream TWAP;
  tick-spacing-aware pool resolution + SushiSwap V3 reader; Binance symbol
  resolution; DEX-volume subgraph repairs.
• Accounting: native-token balance in snapshots (gas drain), FIFO boot-seed
  of pre-existing inventory, Curve single-sided LP funded legs, gRPC
  total_value_usd from snapshot, pro-rated PT partial disposals.
• Gateway: PT maturity from on-chain expiry; asyncpg statement cache disabled
  to stop a pgbouncer crash loop.
• Execution/runner: enriched callback slots; held-PT/swap NAV race fixed;
  position_events.tx_hash points at the action.
• Pendle: typed receipt/oracle errors; days_to_maturity decouple.