Liu An ad1f89fea0 Fix: chat module update LLM defaults (#8125) ... ### What problem does this PR solve? Previously when LLM.model_name was not configured: - System incorrectly defaulted to 'deepseek-chat' model - This caused permission errors for unauthorized tenants Now: - Use tenant's default chat_model configuration first ### Type of change - [x] Bug Fix (non-breaking change which fixes an issue)		2025-06-09 11:44:02 +08:00
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python	Fix: chat module update LLM defaults (#8125)	2025-06-09 11:44:02 +08:00