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fix(research): expand multi-day opening hours; reject aggregator websites

Two follow-ups to the apply-shape fix:

opening_hours: previous converter only kept datum_von's weekday, dropping
the rest of multi-day ranges. A Sat-Sun event ended up with only Samstag
saved. Now iterates [datum_von, datum_bis] inclusive, projects each date
to its German weekday, and dedupes by (weekday, open, close). Different
hours on the same weekday still produce separate rows so the admin sees
the conflict. Capped at 7 distinct weekdays — the form's expressive limit.

website validator: the LLM was emitting aggregator/listing URLs (e.g.
suendenfrei.tv detail pages) as the official event website because that's
where it found grounding info. The prompt already forbade this, but the
model ignores soft rules. Add a hard validator-level rejection for known
aggregator domains: suendenfrei.tv, mittelalterkalender.info,
marktkalendarium.de, festival-alarm.com, mittelaltermarkt.online. These
suggestions now land in the "rejected" bucket with a clear reason.
image_url / logo_url are unaffected (those legitimately come from any host).

Prompt: enumerate the same aggregator domains explicitly under both the
"primary source" fallback list and the "website forbidden" rule, so the
model has a concrete blacklist instead of a category description.

Existing markets with already-saved aggregator websites need manual
clearing — the validator only kicks in on new applies.

Tests: 4 new opening-hours subtests (range expansion, weekday dedupe,
cross-entry dedupe, hours-conflict-kept-separate) and 4 validator subtests
(three aggregator domains rejected as website; aggregator host as image_url
still ok).

2026-04-28 21:22:43 +02:00