-- Fix agent default model_provider and model_name to match production config.
-- The original migration 026 seeded with 'ollama'/'qwen3.5:9b-fast' but production
-- uses vLLM. This migration updates agents that still have the old defaults,
-- preserving any user customizations (only updates if model_name matches the old default).

UPDATE ai_agents
   SET model_provider = 'vllm',
       model_name = 'AxionML/Qwen3.5-9B-NVFP4',
       max_tokens = 4096,
       updated_at = NOW()
 WHERE slug IN ('document-extractor', 'event-classifier', 'thesis-rewriter')
   AND source = 'system'
   AND model_name = 'qwen3.5:9b-fast';