Paths added to the manifest's exclude list are skipped during Add,
MirrorUp, and MirrorDown directory walks. Excluding a directory
excludes everything under it. Already-tracked entries matching a
new exclusion are removed from the manifest.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
flake.nix reads from VERSION instead of hardcoding; Makefile gains
a version target that syncs VERSION from the latest git tag and
injects it into go build ldflags.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
