v0.9.5 — Single-bucket charts

With one day of per-tariff meter data, the grid-import and battery-cycled charts drew that single bucket as a block spanning the whole plot — it read as a rendering fault rather than as one day's data. Since the per-tariff meters start life with exactly one bucket, that was the normal first-day view.

Bars are now capped at 46px. The net-saving chart was unaffected, having a month of statistics behind it, which is why only two of the three charts showed the fault.

Includes v0.9.4's dynamic rate benchmark. module_url is ?v=0.9.5. Update HACS first, then copy the package.