# Audit Report: LLMResult Protocol Migration (Benchmark Infra Part 1)

**Verdict: PASS**

**Spec:** `.vibeflow/specs/benchmark-infra-part-1.md`
**Date:** 2026-03-22

## Tests

```
356 passed, 8 warnings in 0.26s
ruff: All checks passed
mypy: Success, no issues found in 41 source files
```

## DoD Checklist

- [x] **DoD 1: `LLMResult` e `TokenUsage` existem** — `protocols.py:14-41`: `TokenUsage` com `input_tokens`, `output_tokens`, `total_tokens`, `__add__`. `LLMResult` com `text: str`, `usage: TokenUsage | None`.
- [x] **DoD 2: `LLMProvider.complete()` retorna `LLMResult`** — `protocols.py:54`: `-> LLMResult`. mypy passa sem erros.
- [x] **DoD 3: `OpenAIProvider` retorna `LLMResult` com usage** — `providers/openai.py:63,86-94`: mapeia `response.usage.prompt_tokens/completion_tokens/total_tokens` pro `TokenUsage`, retorna `LLMResult(text=content, usage=usage)`.
- [x] **DoD 4: Todos os 16 call sites migrados** — Verificado via grep: 0 call sites retornam `str`. Files: extract.py (2), entity_resolution.py (1), reconcile.py (1), retrieval_agent.py (1), reranker.py (1), procedural.py (2), memify.py (1), consolidation.py (3), clustering.py (3), sleep_time.py (1).
- [x] **DoD 5: `FakeLLMProvider` retorna `LLMResult`** — `conftest.py:42`: `return LLMResult(text=resp)`. Todos os test-local fakes migrados (test_consolidation.py, test_read_pipeline.py, test_timeout.py). 356 testes passam.
- [x] **DoD 6: Exports públicos atualizados** — `__init__.py:30`: `from arandu.protocols import ... LLMResult, TokenUsage`. Ambos em `__all__`.

## Pattern Compliance

- [x] **Dependency Injection** — `LLMProvider` continua Protocol-based com `@runtime_checkable`. Structural subtyping mantido.
- [x] **Error Handling** — Todos os callers preservam try/except. Fail-safe inalterado (callers extraem `.text` e seguem lógica existente).
- [x] **Testing** — FakeLLMProvider + todos test-local fakes retornam `LLMResult`. Zero mudança na lógica de teste.

## Convention Violations

Nenhuma.

## Budget

Files changed: 14 / ≤ 15 budget
- protocols.py, providers/openai.py, __init__.py, conftest.py
- write/extract.py, write/entity_resolution.py, write/reconcile.py
- read/retrieval_agent.py, read/reranker.py, read/procedural.py
- background/memify.py, background/consolidation.py, background/clustering.py, background/sleep_time.py
- test fixes: test_consolidation.py, test_read_pipeline.py, test_timeout.py (within budget)
