Module modes 

Output modes. Mirrors the v1-relevant slice of the TS packages/coding-agent/src/modes/{print-mode,json-event,rpc-mode}.ts — the three run shapes a harness-backed CLI needs:

• [print] — single-shot: send the prompt(s), print the final assistant text (or the error) to stdout, exit. Mirrors TS runPrintMode (text mode).
• json — single-shot streaming: emit each harness event as a JSON line on stdout, then the final outcome. Mirrors TS runPrintMode (mode === "json") + [json_event::toJsonEvent].
• interactive — a minimal line-oriented REPL: read prompts from stdin, run each, print the assistant text, loop until EOF / /exit. v1 does NOT port the TS InteractiveMode TUI (modes/interactive/* — a full terminal UI with Ink/React components); this is a deliberately minimal replacement, documented in docs/m6-cli-open-questions.md.

All three drive the same AgentHarness via AgentLane::prompt_text.

Functions

assistant_text

Extract the concatenated text content from an assistant message. Mirrors the TS print-mode loop (for content of assistantMsg.content if type===text).

interactive

interactive mode: uses TUI if terminal supports it, falls back to minimal REPL.

interactive_repl

Simple REPL-based interactive mode (fallback for non-TTY environments).

json

json mode: emit each harness event as a JSON line on stdout, run the prompts, then emit a terminal result line carrying the outcome + final text. Mirrors TS runPrintMode (mode === "json") streaming every event.

outcome_exit_code

The exit code a run’s outcome maps to. Mirrors TS print mode: error/aborted ⇒ exit 1; everything else ⇒ 0.

print

print mode: send the initial message (prompt text + inline @file expansions), then any follow-up messages, print the final assistant text, return the exit code. Mirrors TS runPrintMode (text).