fn_complexity: per-function line count, nesting depth, and unsafe detection.
loc_analysis: per-file breakdown of logic vs comment vs blank vs string lines.
Both support --json, --top N, directory recursion.
Key finding: tick_once is 196 lines (5x runner-up), core is 1,615 logic lines.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski
