# CLAUDE.md

Claude Code-specific notes for this project. For general development instructions, architecture, coding standards, and deployment — see [AGENTS.md](AGENTS.md).

## Setup & Commands

```bash
make setup          # Create venv and install all dependencies
make test           # Unit tests (no external services)
make test-integration  # Integration tests (needs Claude/Ollama)
make test-contracts # Wire-level contract tests against live service boundaries
make run            # Start dev server on port 8777
make lint           # Ruff linter + formatter check
make typecheck      # Mypy
make clean          # Remove caches and build artifacts
```

Dependencies are in `pyproject.toml` (`[project.dependencies]` and `[project.optional-dependencies.dev]`).

## Critical Gotchas

**ASGITransport does NOT trigger FastAPI lifespan events.** The session-scoped `_initialize_app` fixture in `tests/conftest.py` calls `initialize_application()` explicitly via `asyncio.run()`. Without this, the Ollama/Claude health checks never run: `_ollama_available` stays `None` (treated as available, so requests go to Ollama) and `_claude_available` stays `None` (treated as unavailable, so the Claude fallback never engages).

**AsyncIO scope mismatch.** `asyncio_default_fixture_loop_scope = function` is set in `pyproject.toml`. Session-scoped async fixtures cause `ScopeMismatch` errors. The fix is to use a sync fixture with `asyncio.run()` for session-scoped initialization.

**The butler persona prompt suppresses local-model tool calling.** With `TATLOCK_SYSTEM_PROMPT` attached, gemma4 reasons about calling the calculator, then answers from memory with wrong arithmetic (a different wrong product each run). `orchestrate_tool_calls()` therefore uses the terse `TATLOCK_ORCHESTRATION_PROMPT`; the persona is applied in `synthesize_from_results()`. Do not reattach the persona prompt to a tool-phase agent. `tool_choice: "required"` via extra_body does NOT force Ollama to call tools — it is advisory at best.

**Claude Sonnet 5+ rejects sampling parameters.** `temperature`/`top_p`/`top_k` return a 400. Use `get_sampling_settings()` from the model selector instead of passing `ModelSettings(temperature=...)` directly to agents that can run on the Claude fallback. The contract test suite pins this (`make test-contracts`).

**Integration test timeouts.** Set to 120s to match `OLLAMA_TIMEOUT` config (300s for the pure-Ollama fallback test, which cannot be rescued by Claude). Current GPU-resident numbers (measured 2026-08-07, gemma4:e2b at ~95 tok/s): full Steward → orchestrate → synthesize flow ~10–13s for simple turns; librarian-routed queries ~20-25s (not re-measured). A single turn costs **3 sequential Ollama calls and ~710 generated tokens** even for "what is 61 plus 12?" — most of it the model's own reasoning, paid three times. Cold model load is ~36s, avoided while the model is pinned with `keep_alive: -1`; the `OLLAMA_KEEP_ALIVE=2h` default otherwise reintroduces it. The old "~35s steward / ~2 min flow" and "11–25s flow" figures are superseded — do not plan against them. `STEWARD_TIMEOUT` defaults to 60s.

**`get_benchmark_store` does not exist.** The benchmarking module (`src/core/benchmarks.py`) was never implemented. `scripts/benchmark_analysis.py` also references it and is broken. Do not add mocks for it in tests.

**Steward tests need household registry.** Use `register_household_members()` (sync) in fixtures, not `initialize_application()` (async). The steward extracts capabilities from the registry.