Development record

The invocation regexp in synopsisCarriesFlag (internal/surface/cli/staleusage.go) has no left word boundary before abcd and joins the known path with \s*, which allows zero whitespace: a fenced line `myabcd build next --x` or `abcdbuild next --x` counts as an invocation of `abcd build next` that documents --x, so the stale-binary note can be granted on a line that never invokes abcd. Found by the Opus+Sonnet review of fix/stale-usage-notes, 2026-10-15.