Bryan Helmkamp 095dd5ff3c Add arc llm chat subcommand for interactive multi-turn conversations ... Adds a new `chat` subcommand under `arc llm` that reads user input in a loop, maintains conversation history, streams LLM responses, and supports `--model` and `--system` options. Includes an e2e test verifying multi-turn context and system prompt behavior. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>		2026-03-02 11:54:47 -05:00
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cli.rs	Add arc llm chat subcommand for interactive multi-turn conversations	2026-03-02 11:54:47 -05:00