Split client.rs into client/mod.rs (public API + helpers), client/chat.rs
(chat-completions streaming), and client/responses.rs (responses API
helpers). Internal helpers promoted to pub(super) for intra-module
visibility; the public DeepSeekClient API is unchanged.
While here, redesign all five system prompts around decomposition-first
philosophy inspired by the mismanaged-geniuses hypothesis (Zhang et al.,
2026). The model is now instructed to todo_write / update_plan before
acting, fan out sub-agents for parallel work, and keep the sidebar
populated so the user always sees what's happening. Mode prompts updated:
- agent.txt: 'Before requesting approval, lay out work with todo_write'
- plan.txt: 'Use update_plan for strategy, todo_write for tactics'
- yolo.txt: 'Even with auto-approval, create a todo_write first'
- normal.txt: same pattern for legacy compatibility
Update CHANGELOG [Unreleased] and README modes section accordingly.
Hunter Bown
c5a584d5c3