- Global settings: custom AI panel with OpenAI/Gemini/Claude each with API key, model selector, and live test-connection button (no save needed) - Per-company IA tab: same three providers + fallback to global when empty - AiBot: reads per-company config_json first, falls back to env() global - Added callClaude() for Anthropic Messages API - More OpenAI models: gpt-4.1, gpt-4.1-mini - test-ai endpoint: accepts provider/api_key/model from POST for live test Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>