Add three icons, a styleable menu button and a reliable back-to-top in 1.13.0

The icon set had no drawing for people, music or a house - the three pictures
the Tagespflege Moldovan template asks for. They join as `people`, `music` and
`home`; a test keeps the list and the drawings together, because a missing path
renders an empty `<path d="">`: invisible, without an error.

An icon block's own colour never reached its drawing: the embedded SVG carries
the same `block-icon` class as its wrapper and set the accent colour again.
`.block-icon .block-icon{color:inherit}` fixes it at the root.

The menu button becomes a thing you can shape. `burgerLabel` chooses symbol and
text, text only or symbol only (which keeps the name for screen readers), and
the new style group `menu` targets the button itself, the way `img` targets an
image and `controls` the slider. Inside the header the opened menu now lies
under the header across the full width instead of pushing the header apart -
on a phone that looked like a missing navigation.

The back-to-top button no longer depends on `animation-timeline: scroll()`. A
browser that parses the property but does not run the timeline left it in the
first frame of the animation: permanently invisible. Two classes from
scrolled.js decide now, and without a script the button simply stays visible.

Also: the Tagespflege Moldovan rebuild as its own installation, built only by
`scripts/seed-tagespflege-moldovan.php`.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/Controller/PageController.php

@@ -82,7 +82,8 @@ final class PageController extends AbstractController
         $needsMotion = (bool) array_filter($documents, fn (array $doc): bool => $this->hasEntrance($doc));
         // Only the header changes with the scroll position; a scrolled value anywhere in it asks
         // for the small script that marks the page as scrolled.
-        $needsScrolled = isset($areas['header']) && $this->hasScrolled($areas['header']);
+        // Den Nach-oben-Knopf blendet dasselbe Skript ein; ohne es bleibt er dauerhaft sichtbar.
+        $needsScrolled = (isset($areas['header']) && $this->hasScrolled($areas['header'])) || (bool) ($this->settings->load()['scrollTop'] ?? false);
         $styles = $this->theme->css($theme).$this->scrollTopStyles($this->settings->load(), $theme).$this->styles->compileDocument($page['document']).$this->code->compileDocument($page['document']);
         foreach ([...array_values($areas), ...array_values($sections)] as $extra) {
             $styles .= $this->styles->compileDocument($extra).$this->code->compileDocument($extra);