081084816b
- Adds abstract aclose() and shared load_prompt() helper to BaseVLMClient. - OllamaClient now logs latency, tokens, and prompt hash per call. - Retries cover HTTP 429 and 5xx in addition to network/timeout errors. - Cache key now includes response_format and max_tokens. - Warns when JSON schema generation falls back to plain 'json' format. - Adds FakeVLMClient.aclose() and cache unit tests.