Release 0.8.18

Added

• Support lattice applications composed from reusable components, with signed ownership, timestamped records, forks and atomic transactions. (Design)
• Allow LatticeNode to manage lattice networking for an application, with optional DID identity. (Networking)
• Allow services to choose their durability with host checkpoints and scoped automatic flushing. (Persistence)
• Support DLFS file modification times and safe concurrent drive creation. (DLFS)
• Allow transaction simulation as an alternative to query execution, for cost estimates through REST and the Java client.
• Support fast Index seek, slice and concat.

Changed

• Simplify lattice host, node and cursor APIs around the application model; see the design notes when upgrading. Services save by closing the host, as closing a node no longer saves.
• Extend DLFS data with modification times as a one-way upgrade: back up stores and upgrade all replicas together. (#688)
• Improve responsiveness of Java client transactions and the GUI.

Fixed

• Make CVM integer behaviour consistent across internal representations.
• Improve robustness of shutdown and persistence for lattice services, P2P nodes, DLFS and JDBC file databases.
• Improve reliability of client requests across reconnects, timeouts and duplicate transactions.
• Harden scheduled execution, owner verification and X402 payment confirmation.
• Show text from other parties safely in the GUI, and keep it responsive during network operations. (#765)
• Improve PostgreSQL wire protocol handling in Convex DB.