LangGraph 1.2.11 exposes node-level trace policy and repairs checkpoint-history handling

The official release adds trace_policy to add_node and fixes collection of writes at plain-value seeds in delta-channel history. The release also rolls dependency updates into the orchestration package.

Why it matters: Selective tracing helps teams balance observability, privacy and cost at graph-node level; checkpoint correctness is essential for durable execution and recovery. Impact: Test replay, resume and trace-retention behaviour before production upgrades.

Official GitHub release