0.2.13

langgraph 0.2.13

Summary of Changes

• Moved Context from a channel implementation to a managed value implementation, improving how context managers work in graphs
• Added support for runtime-only managed values with a runtime flag, preventing unnecessary serialization
• Enhanced the ManagedValueMapping to properly handle runtime placeholder values during serialization/deserialization
• Improved how state is read and written in various graph operations to support managed values

Detailed Changes

langgraph.channels.context.Context

• Reimplemented as a wrapper around langgraph.managed.context.ContextManagedValue.of
• The implementation now uses the managed value system rather than being a direct channel

langgraph.managed.context.Context

• New implementation of Context as a managed value with runtime=True
• Provides same functionality as the previous channel implementation but integrates better with the managed value system

langgraph.managed.base.ManagedValue

• Added a runtime flag to indicate whether a managed value is created at runtime and not stored
• Enhanced serialization support for runtime values

langgraph.managed.base.ManagedValueMapping

• Added methods to handle runtime placeholders during serialization/deserialization
• Implemented replace_runtime_values and replace_runtime_placeholders to handle runtime values

langgraph.graph.state.StateGraph

• Updated state reader implementation to better handle managed values
• Modified branch system to properly pass schema information

langgraph.pregel.algo

• Enhanced local_read and local_write functions to handle managed values
• Added step parameter to track execution progress when using managed values
• Improved handling of runtime placeholders during task preparation