feat: hold last snapshot + skip empty rate_limits pushes#7
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Drop the stale watchdog: the board now keeps showing the last received reading until a new snapshot arrives, instead of greying to '--' after 60s with no data. Matches the desired 'persist, refresh only when new data comes' behavior. On boot it still shows '--' placeholders until the first snapshot.
Claude Code sometimes emits a status-line payload without rate_limits (all-zero fields) -> we were pushing an all-zero snapshot, which the board (hold mode) then kept (5H 0% / RESET 00:00:00 / SESSION $0.00). Gate the push on HasRateLimits (resets_at>0), so empty payloads are skipped and the board keeps its last real reading. A legit 0% at window start still has resets_at>0 and pushes normally.
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Two paired changes so the board shows the last real reading and never blanks/zeros on its own.
Firmware: hold last snapshot
Drop the 60s stale watchdog — the board keeps the last received reading until a new snapshot arrives (instead of greying to
--). On boot it still shows--until the first snapshot.Host: skip pushes with no rate_limits
Claude Code sometimes emits a status-line payload without
rate_limits(all-zero fields). We were pushing an all-zero snapshot, which the board (now in hold mode) kept — showing 5H 0% / RESET 00:00:00 / SESSION $0.00. Now the push is gated onHasRateLimits()(resets_at>0), so empty payloads are skipped and the board keeps its last real value. A legitimate 0% at the start of a window still has resets_at>0 and pushes normally.Both verified;
go vet/go testpass (new tests for HasRateLimits + skip-on-empty). 1.47B running the firmware side; host reinstalled locally.