Function copilot_jsonl_v1 

pub fn copilot_jsonl_v1() -> ProviderSchema

VS Code Copilot Chat JSONL event-sourced format (extensions 0.37.0+).

Sessions stored as JSONL files with event-sourced updates:

• kind 0: Full session snapshot (first line)
• kind 1: Incremental request update
• kind 2: Incremental response update