Kesehatan data

Data Health Console (Sprint 5). Checks every stored series against published review triggers
(config/data_health.yaml) and never changes the data.
    STALE        newest reading older than the allowance for its frequency; or flagged stale by the cockpit
                 file's own source checks
    FAILED       the latest run of the connector that loads the series reported an error for it
    SUSPICIOUS   impossible or non-finite values (a non-positive level in a series measured in % changes),
                 two different values for one date in a single load, an unexpected gap, a large
                 discontinuity (robust z of a one-reading change)
    MISSING      referenced by the app (configuration or something people saved) but not stored
A series can carry several flags; HEALTHY means none. Per source: each loader (the cockpit file or a fetch
connector) with its last successful refresh, failed runs in the window and the stale series it loads.

Ubah config/data_health.yaml untuk menggantinya.