Release step S3, the second of four family extractions from main.zig. A pure behaviour-preserving move: the eight working-tree tracking handlers -- add, rm, mv, status, extras, clean, addremove, diff -- and the helpers and tests private to them move verbatim into src/cmd/tracking.zig, byte-identical to their source but for the pub visibility the dispatch switch forces on the moved handlers. Helpers shared with other verbs (runStat, commit, merge, revert) stay pub in main.zig and are aliased back so the moved bodies read unchanged. No helper is duplicated and no cross-cmd import is created; runInit and runStat stay in main.zig. The test count is unchanged, so nothing was orphaned. main.zig keeps main, the verb dispatch, and the shared helpers. closed check-in: ed32969b32 user: dmestas tags: s3-tracking