YueGuobin aaba2d6181 docs: update node name from generate_title to title_generator_node
Updated references to the title generation node in both documentation and code:
- Changed node name from `generate_title` to `title_generator_node` in API design documentation
- Updated filtering logic in agent service to exclude `title_generator_node` from LLM call statistics, token counting, and frontend streaming events
- Maintains same functionality while using more descriptive node name for clarity
2026-03-05 23:19:20 +08:00
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