content: drop repeated reference headings and land case CTAs on anchors

Service notes now say why the public case fits, the four case CTAs
open the matching project fragment, and the Innofocus run-time figure
is a case metric as well as a home tile.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/app/core/content/content.contracts.ts

@@ -19,6 +19,7 @@ export interface CtaCopy {
   readonly routeId?: RouteId;
   readonly href?: string;
   readonly external?: boolean;
+  readonly fragment?: string;
 }
 
 export interface SectionCopy extends CopyBlock {