Put opening hours, service area and FAQ into the structured data

Settings gain opening hours per weekday and a list of places served;
LocalBusiness emits openingHoursSpecification (equal times grouped) and
areaServed. An accordion can be marked as FAQ (schema v23 property
`faq`), which turns its entries into a FAQPage built from the visible
title and text blocks. Elektro Bernhard gets the real office hours
(Mo–Fr 07:30–17:00), the service area from Karlsruhe to Offenburg and
two more questions. ADR 094.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

src/Controller/SettingsController.php

@@ -49,6 +49,7 @@ final class SettingsController extends AbstractController
             // Fuer die Farbfelder: dieselbe Palette, die auch der Editor anbietet.
             'palette' => $this->theme->load()['colors'],
             'socialNetworks' => SocialProfiles::NETWORKS,
+            'weekdays' => SiteSettings::DAYS,
             'socialPlaceholders' => SocialProfiles::PLACEHOLDERS,
         ]);
     }