integration: name case metrics, split delivered offerings from offers, and frame the stack honestly

Give every metrics list a localized heading, keep delivered Rösterei tools out of the offer boundary, and describe the skills grid as a familiarity overview with an evidence note instead of claiming public-case backing for every item.

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

src/app/components/pages/skills/skills-grid/skills-grid.ts

@@ -105,6 +105,10 @@ const BASE_CATEGORIES: readonly SkillCategory[] = [
   },
 ];
 
+export const SKILL_GRID_ITEM_NAMES: readonly string[] = BASE_CATEGORIES.flatMap((category) =>
+  category.skills.map((skill) => skill.name),
+);
+
 @Component({
   selector: 'app-skills-grid',
   changeDetection: ChangeDetectionStrategy.OnPush,