f2f6dce785
Reconciles the salvaged Responses-API mandate with the bundled meta-ai plugin that landed in #88565: - meta-ai profile api_mode -> codex_responses (prompt caching engages only on /v1/responses; 0% vs 93-99% measured). Custom endpoints with a non-api.meta.ai base URL still fall through to chat_completions via the host-driven mandate design. - cli-config.yaml.example: point the example at MODEL_API_KEY (Meta's documented env var) and note the bundled provider covers the default endpoint - tests/providers/test_meta_ai_profile.py updated for the new wire