Search Suggest

Return autocomplete suggestions across multiple sources.

Ranking (2026-08-25 — before this, dictionary headwords sorted by length always came first, so "金刚" produced 金刚/金刚石/金刚砂/金刚宝石 and the site's most-searched sutra 《金刚经》 was not in the list at all):

1. canonical titles whose alias starts with the query (services/search.py _SUTRA_ABBREV — shared with retrieval and search)
2. exact dictionary headword ("苦" still surfaces the entry 苦 first)
3. ES title prefix matches (sutra titles & translators)
4. dictionary prefix headwords (金刚石 …)
5. hot_questions containing the query

Each item carries a type (title / term / question) so the homepage can group the dropdown; suggestions stays a flat string list for the search page. Deduplicated, at most 10.

根据输入返回搜索建议（自动补全）：正典经名 > 精确词头 > 经名 > 前缀词头 > 精选问题。