GreatVoyage-v4.8.3(Antisthenes) planning

This issue will be used to track the planning and coordination of TIPs and features targeted for inclusion in GreatVoyage-v4.8.3 (Antisthenes). Details of the included changes are still under discussion, and the v4.8.3(Antisthenes) is expected to be released in Q4, 2026.

The scope of the release：

TIP：
TBD

API:
Issue 6298: FullNode API based on determining chain state
Issue 6936: Standardize HTTP API Error Messages
Issue 6941: Standardize JSON-RPC error mapping and exception boundaries
Issue 6951: Standardize JSON-RPC null parameter handling

Network:
Issue 6932: Improve thread safety of shared mutable state
Issue 6942: Harden sync message validation and resource controls
Issue 6675: Add timestamp validation and deduplication to hello handshake messages
Issue 129: Avoid duplicate connection attempts to active nodes before handshake completion
Issue 144: Improve pre-handshake connection handling

Security:
TBD

TVM：
Issue 6697: Standardize precompile execution with fine-grained timeout checks

Others:
Issue 6921: Tracking: code refactor and cleanup
Issue 6939: Fix RocksDB table option setters in v4.8.2.1
Issue 6926: Fix field mappings in GRPC GetStatsInfo and GetNodeInfo
Issue 6940: Fix toolkit db mv to prevent data loss
Issue 6929: Improve event delivery and ZeroMQ queue configuration
Issue 6969: Robustness fixes for multiple issues

This issue is a release-planning tracker for GreatVoyage-v4.8.3, with scope still under discussion and multiple linked API, network, TVM, and cleanup issues. Start by reviewing the linked issues and their current status; done means the release scope and included changes are finalized, rather than implementing a self-contained change here.