[F3] #53 — Local model adapter (llama.cpp, Ollama, vLLM)

[EmersonBraun]

User Story

As a dev, I want adapter para modelos locais (llama.cpp, LM Studio, vLLM, Ollama).

Context

Issue derived from Master PRD #113 — story #53 of Phase 3.

Definition of Done

• Implementation
• Tests (unit + integration when applicable)
• Documentation updated
• Changeset created
• Review approved

[EmersonBraun]

Shipped in PR #393 (Phase 3 S19).