NRC Volt Sync v0.2.0 beta

NRC Volt Sync 0.2 is the first public beta release. It makes partial synchronization failures visible and retryable, removes legacy raw Garmin responses from local state, prevents unaligned sensor data in summary-only FIT records, and adds an 80% CI coverage gate plus dependency and security checks.\n\nStart with one dry run and one real run, then compare Strava, Garmin Connect, and Nike Run Club before enabling a historical backfill. See the bilingual setup guides and docs/BETA_TESTING.md.\n\nThis is a free, local personal-data portability tool. It is not affiliated with Nike, Strava, Garmin, or Apple, and Garmin private-API compatibility may change.