Read an exact line range from a raw RedM/RDR3 doc file by absolute line number — the windowed-read companion to grep_docs. When grep_docs returns a hit at path:line inside a large file, call read_lines({ path, start, end }) to pull the surrounding block. This is the ONLY way to read around a hit in the largest rdr3_discoveries data tables (audio_banks, ingameanims_list, ptfx, soundsets, imaps_with_coords, megadictanims, etc.): their full bodies are NOT in the vector/heading index (only an ~80-line preview is), so semantic_search can't reach them and get_document resolves real section headings only — NOT synthetic lines N-M offsets. start/end are 1-based and inclusive; omit end for a 50-line window; one call returns at most 400 lines (narrow the range for more). For prose .md docs prefer get_document with a heading; to search values use grep_docs; for individual script natives use lookup_native.