Pages through the AiSEG2's circuit list and returns each circuit's rank, name and watts, plus
the total measured watts and how many device pages were read. Circuit names here are
display-derived (they may wrap); list_circuits() is the authoritative name source.

This is the AUTHORITATIVE source of circuit naming (from the device's installation settings).
The names in get_circuit_breakdown() are display-derived and may differ (line wraps); prefer
these when you need a canonical circuit name.

Requires an SD card inserted in the AiSEG2. The export is downloaded once and cached, so the
first call is slow and later calls are fast. Returns long-form points ({timestamp, metric,
value}); use limit/offset to page (limit caps the number of returned points).

Args:
    granularity: Time resolution. "30min"/"hour"/"day" take start/end as YYYY-MM-DD; "month"
        takes YYYY-MM; "year" takes YYYY.
    start: Range start (inclusive), formatted per the granularity.
    end: Range end (inclusive), formatted per the granularity.
    metrics: Optional filter by standard series keys (e.g. "generation_pv1", "grid_buy",
        "grid_sell", "battery_charge", "battery_discharge", "ev_charge") or their Japanese
        header names. Omit for all series.
    circuits: Optional filter by circuit name (see list_circuits). Omit for all circuits.
    limit: Maximum number of series points to return (default 200).
    offset: Number of points to skip (for pagination).

Requires an SD card inserted in the AiSEG2. Shares the same cached download as get_history.
Returns long-form cost points ({timestamp, metric, value}) with values in Japanese yen.

Args:
    granularity: "day" takes start/end as YYYY-MM-DD; "month" as YYYY-MM; "year" as YYYY.
    start: Range start (inclusive), formatted per the granularity.
    end: Range end (inclusive), formatted per the granularity.
    limit: Maximum number of series points to return (default 200).
    offset: Number of points to skip (for pagination).