application/agent: ResearchAgent (LangGraph create_react_agent) + build_tools (list_strategies,
evaluate_candidate, evaluate_book wrapping the services) | adapters/llm.build_chat_model (config-
swappable: local Ollama now, cluster/API later) | AgentSettings | CLI agent. The LLM proposes; the
deterministic gauntlet inside the tools disposes. Verified: tools work + the model emits tool-calls
(architecture correct). Local qwen2.5:3b is too weak for the reliable multi-step loop (model bottleneck,
swappable via config). Also fixed flaky test seeds (hash()->deterministic). 14/14 tests. Bonus: tools
surfaced GC+NQ+ES trend book = Sharpe 1.06 OOS 1.47 DSR 0.949.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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