v0.1.17

Added

• okf --version flag — prints version and exits.

Fixed

• source_lines end was hardcoded to 0 in _make_concept — now uses node.end_point so every concept shows correct end line number.
• SQL Function concepts now pass node to _make_concept, fixing their source_lines end (was 0).

Changed

• README: cross-reference linker documentation under "How it works". SQL parser updated from regex to tree-sitter. --version added to CLI reference.
• TEST.md: added ruff lint check (Phase 1.1).

---