The status window is the PC's surface for workout data, but it said nothing
about the sync layer that data now arrives through -- so a machine that had
silently fallen back to the GitHub mirror, or was configured but had never
completed a push, looked identical to a healthy one. That is exactly how
todo's desktop app sat on GitHub unnoticed while every other surface moved to
Firebase.
Adds a "Sync backend" section and a --sync CLI flag (for i3blocks, alongside
--summary/--state), both rendering one line: which backend this machine is
configured for, when it last pushed, and how many peers it has merged.
Deliberately on-disk only -- no RTDB read, no Firebase sign-in -- because
gather_status() runs on every i3blocks tick and every window open; a network
round-trip there would be rate-limited nonsense. Everything shown is
knowable from the revision cache plus which credential files exist.
Coloured by `healthy` (configured AND has pushed) rather than by backend,
because "configured but never pushed" is the failure that looks fine in every
settings screen and produces no data.
Named _section_sync_backend, not _section_sync: another session is adding a
_section_sync that reports the outcome of a background sync *tick*. The two
are complementary -- did the tick run, versus what is this machine wired to
-- so they coexist rather than one overwriting the other.
Verified by running it, not just the suite: the real window shows
"firebase · pushed 2026-08-09 21:06 · 2 peer(s)" against this machine's live
state, and `--sync` prints the same line.
924 tests, 100% branch coverage. Every except logs at warning per the repo's
no-silent-failures hook; no suppressions added.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0177xwzcpfpWG2qca8Mr39q9
