Crate newt_acp_worker 

Newt-Agent ACP worker.

Speaks the Agent Client Protocol (agentclientprotocol.com) over stdio so drake-foreman can dispatch coding goals to Newt instances.

Contract (per memory feedback_drake_patch_not_prose and feedback_empty_diff_is_a_crash):

• Worker ONLY edits files; never git add / git commit / git push.
• Empty git diff post-turn is a deterministic crash — foreman counts it against the model’s scorecard.
• TaskReply.model_id is mandatory.

Structs

AcpServer

JSON-RPC ACP server. Holds the inference backend and an in-memory session map.

Session

Per-session state kept by the ACP server.

TaskReply

Structured reply for one prompt turn.

Functions

capture_diff

Capture the workspace diff with git diff --no-color.

is_empty_diff

True when the diff has no real content (whitespace-only or empty).

run_stdio

Spawn the default ACP worker over stdio.

run_with_io

Spawn the default ACP worker against an explicit reader/writer pair.