在已索引的集合中实现语义搜索与全文搜索。当用户提及“搜索某个集合”“进行语义搜索”“执行向量搜索”“构建知识库”或“在已索引的代码、Markdown 或 PDF 中查找相关内容”时，可选用此功能。
--- frontmattername: arc-search description: Semantic and full-text search across indexed collections. Use when user mentions searching a collection, semantic search, vector search, knowledge base, or finding content in indexed code, markdown, or PDFs. allowed-tools: Bash(arc:*), Read
arc collection list # list collections arc search semantic "query" --corpus NAME --limit 10 # conceptual queries arc search semantic "query" --corpus A --corpus B # multi-corpus search arc search text "query" --corpus NAME --limit 10 # exact terms
Options: --json for structured output, --filter "key=value" for metadata filtering.