Query knowledge base documents

Query local filesystem knowledge base using grep

When you have documents chunked in a local db/ and need fast, scoped grep-based search without external APIs.

• · doc_id (8-hex string)
• · keyword (literal terms joined by |)
• · optional: -P for regex

• · matching file paths with line numbers
• · chunk content from _index.md
• · heading tree navigation

• · db/ directory exists with _manifest.json
• · documents ingested into db/

• · keyword not found returns empty
• · regex metacharacters undefined behavior
• · doc_id does not exist returns no results

• · Step-by-step bash commands documented
• · manifest → _index.md → grep workflow
• · chunk ID position encoding explained