Module context_frame 

Immutable context-frame event object.

ContextFrame stores one durable piece of incremental workflow context.

How to use this object

• Create one frame whenever an incremental context fact should survive history: intent analysis, step summary, code change, checkpoint, tool call, or recovery note.
• Attach intent_id, run_id, plan_id, and step_id when known so the frame can be joined back to analysis or execution history.
• Persist each frame independently instead of mutating a shared pipeline object.

How it works with other objects

• Intent.analysis_context_frames freezes the analysis-time context set used to derive one IntentSpec revision.
• Plan.context_frames freezes the planning-time context set.
• PlanStepEvent.consumed_frames and produced_frames express runtime context flow.
• Libra’s live context window is a projection over stored frame IDs.

How Libra should call it

Libra should store every durable context increment as its own ContextFrame, then maintain a separate in-memory or database-backed window of which frame IDs are currently active.

Structs

ContextFrame

Immutable incremental context record.

Enums

FrameKind