AI LLM Search 1.1.5

What changed

• Search selected topics instead of generic pronouns such as “这是什么”.
• Filter unrelated web candidates, including exact acronym matching for cases such as NAIC versus NAICS.
• Group direct context, vault retrieval, and web candidates so users can see exactly what was sent to the model.
• Improve source titles, paths, hostnames, and narrow-sidebar readability.
• Add regression tests for context-query construction and source relevance.