TapTempo kept a rolling window of 8 taps, so a long tapping session
chased the most recent taps instead of converging on the overall tempo
(trav noticed the estimate never settled). Every tap since the session
started now counts; a >2.5s gap still begins a fresh session.
Snapshot of the existing codebase before working through the TASKS.md
backlog. Real library data (data/) and the iTunes import fixture
(itunes-test-library/) are gitignored.
trav