Module fts 

SQLite FTS5 full-text search engine for tree-structured documents.

Rust port of Python treesearch/fts.py. Single-file storage: tree structures, FTS5 indexes, and incremental metadata are all stored in one SQLite database.

Key features:

• WAL mode for concurrent read/write
• MD-aware schema: front_matter, title, summary, body, code_blocks
• Hierarchical column weighting via FTS5 bm25()
• Content hash for incremental indexing
• Ancestor score propagation for tree search

Structs

FTS5Index

SQLite FTS5 full-text search index for tree-structured documents.

FtsResult

A single FTS5 search result.

FtsWeights

Column weights for FTS5 bm25() ranking.

IndexStats

Statistics about the FTS5 index.

MdFields

Parsed markdown-aware fields from a node’s text.

Functions

parse_md_node_text

Parse a node’s text into MD-aware structured fields.