Peter Meier
080e69dcac
Energy-Charts' /public_power endpoint started rejecting requests without
`start` + `end` query params ("HTTP 404: no content available"). The
CMS-cached `strommix_de` external schema cannot pass dynamic time
windows (external-collections v1 has no runtime-vars), so the per-field
fallback chain was effectively dead — when SMARD's load filter lagged
12+ h, both sources returned null and the widget surfaced "Lastwert
nicht verfügbar" with all zeros.
Aggregator now fetches /public_power directly with a 2-hour window,
picks the latest non-null per series, and feeds those values into the
existing per-field fallback. CMS strommix_de schema becomes obsolete
for the widget but stays available for admin debugging.
Same shape as the previous CMS payload, so the fallback merge is
unchanged. Picks `Wind onshore`, `Wind offshore`, `Solar`, `Biomass`,
`Hydro Run-of-River`, `Fossil brown coal / lignite`, `Fossil hard
coal`, `Fossil gas`, `Nuclear`, `Load` from production_types.