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>

public/assets/site.css

@@ -178,6 +178,9 @@ body.consent-open{padding-bottom:260px}
 /* A single icon, sized by class because inline styles are forbidden by the policy. */
 .block-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--accent);line-height:0}
 .block-icon svg{width:100%;height:100%;display:block}
+/* Das eingebettete SVG traegt dieselbe Klasse wie seine Huelle und setzte deshalb die
+   Akzentfarbe erneut - eine am Symbolblock eingestellte Farbe kam nie an. */
+.block-icon .block-icon{color:inherit}
 .icon-size-12{width:12px;height:12px}.icon-size-16{width:16px;height:16px}.icon-size-20{width:20px;height:20px}
 .icon-size-24{width:24px;height:24px}.icon-size-32{width:32px;height:32px}.icon-size-40{width:40px;height:40px}
 .icon-size-48{width:48px;height:48px}.icon-size-56{width:56px;height:56px}.icon-size-64{width:64px;height:64px}
@@ -377,6 +380,16 @@ body.consent-open{padding-bottom:260px}
 }
 .menu-burger>summary{min-height:44px;min-width:44px}
 .menu-burger-body{overflow-wrap:anywhere}
+/* Im Kopfbereich klappt das Menue als Flaeche unter dem Kopf auf, ueber die volle Breite.
+   Inline geoeffnet stand es sonst in der schmalen Spalte neben der Marke und schob den
+   ganzen Kopf auseinander - auf dem Telefon sah es aus, als fehle das Menue. */
+.site-header{position:relative}
+.site-header .menu-burger[open]>summary{border-radius:8px}
+.site-header .menu-burger-body{position:absolute;left:0;right:0;top:100%;z-index:30;
+  padding:15px max(16px,calc((100% - var(--k-container,1180px)) / 2 + 16px)) 25px;
+  background:var(--paper);box-shadow:0 15px 25px color-mix(in srgb,var(--ink) 12%,transparent)}
+.site-header .menu-burger-body .menu-list{gap:0}
+.site-header .menu-burger-body .menu-list a{padding:12px 10px;font-size:16px}
 /* Visibility never overwrites the block's grid/flex/display settings. */
 .visibility-hidden{display:none!important}
 .slider-controls button[hidden]{display:none}
@@ -395,12 +408,11 @@ body.consent-open{padding-bottom:260px}
 @media (max-width:767px){.scroll-top{bottom:16px;right:16px}.scroll-top-links{left:16px;right:auto}}
 /* Solange der Einwilligungsdialog unten steht, würde der Knopf darauf liegen. */
 body.consent-open .scroll-top{display:none}
-@supports (animation-timeline: scroll()){
-    .scroll-top{animation:kant-scroll-top linear both;animation-timeline:scroll(root);animation-range:var(--kant-top-after,400px) calc(var(--kant-top-after,400px) + 160px)}
-    @keyframes kant-scroll-top{from{opacity:0;visibility:hidden;transform:translateY(10px)}to{opacity:1;visibility:visible;transform:none}}
-    /* Beachtet die Website die Browservorgabe (Einstellungen → Bewegung), steht er von Anfang an da. */
-    @media (prefers-reduced-motion: reduce){html.motion-respect .scroll-top{animation:none}}
-}
+/* Sichtbar, sobald der Leser ein Stueck gescrollt hat - gesteuert von scrolled.js ueber
+   `kant-top-armed` und `kant-top-shown`. Ohne Skript bleibt der Knopf einfach sichtbar. */
+html.kant-top-armed .scroll-top{opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s,visibility .25s,transform .25s}
+html.kant-top-armed.kant-top-shown .scroll-top{opacity:1;visibility:visible;transform:none}
+@media (prefers-reduced-motion: reduce){html.motion-respect .scroll-top{transition:none}}
 /* Der Bildbetrachter. Die Fläche daneben schließt, das Bild bleibt in seinen Grenzen, und die
    Bedienknöpfe sind groß genug für einen Daumen. Ohne Skript wird nichts davon gebraucht - dann
    öffnet der Verweis einfach das große Bild. */