Fix invisible service descriptions, broken empty-translation glitch; redesign modal list

Real bugs, both confirmed via screenshot 2026-08-02:
- dark3 was set to a near-white cream tone assuming background-only
  use, but Klaro's .cm-list-description rule uses it as a TEXT color
  — every service description was almost invisible. Changed to
  --color-text-muted.
- The service.disableAll.description="" override to hide Klaro's
  boilerplate toggle-all text broke its own t() lookup, rendering a
  literal "[missing translation: de/service/disableAll/description]"
  string instead — worse than the original. Reverted, hidden via a
  plain CSS display:none on .cm-toggle-all .cm-list-description
  instead.

Also a real redesign pass on the settings modal's service/purpose
list (wider modal, row separators, bigger/clearer toggle switches,
distinct footer) — was previously only reachable via the notice's own
generic styling, still visibly "default library layout" per Marco's
own read.

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

app/lib/klaroConfig.ts

@@ -115,7 +115,13 @@ export function buildKlaroConfig(codes: TrackingCode[], onAccept: (code: Trackin
       theme: ["light", "bottom", "left"],
       dark1: "#fffdf8", // --color-bg-paper — notice/modal background
       dark2: "#e5e0d8", // --color-border
-      dark3: "#f3efe9",
+      // NOT a light background tint despite the name — Klaro's own
+      // .cm-list-description rule (each service's description text in
+      // the modal) uses dark3 as a TEXT color, not a background. A near-
+      // white value here (tried first) made every service description
+      // almost invisible against the modal's own light background —
+      // confirmed via screenshot 2026-08-02. --color-text-muted instead.
+      dark3: "#6b6b69",
       light1: "#1a1a18", // --color-text-primary — notice/modal text
       light2: "#6b6b69", // --color-text-muted
       light3: "#1a1a18",
@@ -155,13 +161,6 @@ export function buildKlaroConfig(codes: TrackingCode[], onAccept: (code: Trackin
           marketing: "Marketing",
           content: "Inhalte",
         },
-        // Klaro's own bundled German copy for the per-service "alle
-        // umschalten" toggle in the modal — the explanatory line reads as
-        // redundant boilerplate next to a plainly-labeled switch, and the
-        // toggle's own text color made it barely legible anyway (see
-        // KlaroTheme's own comment). Title stays (Klaro's own default is
-        // fine), only the description is emptied.
-        service: { disableAll: { description: "" } },
         ...serviceTranslations,
       },
     },