feat: freelance page, a story on the homepage, and design fixes

The homepage was too long and read as a list of sections. The technical
ones (project fit, tools, how a change is secured) move to a page of their
own, /freelance and /en/freelance, linked from the header, the footer and a
pointer on the homepage. The rest is reordered into one story (who, what you
need, examples, how working together goes, results, questions, contact) and
each section opens with a sentence that leads over from the one before.

routes.ts: a page may now have the same name in both languages. Before,
/en/<german name> was always moved to the English name, which for such a
page would have redirected the address onto itself.

Design: list titles such as "Passt gut" are real headings instead of small
grey labels. The automation examples, their description and the run are one
box, so it is clear they belong together. Digits on light backgrounds are
the blue of the panels instead of black. The square corner marks on the
rounded service cards are gone. The years in the career line are readable.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/components/illustrations/CareerLine.tsx

@@ -46,7 +46,7 @@ export const CareerLine: React.FC<{ stations: readonly CareerStation[] }> = ({
           }`}
           aria-hidden="true"
         />
-        <span className="font-mono text-[11px] uppercase tracking-[0.2em] text-slate-400 md:col-span-3 md:pt-1.5">
+        <span className="font-mono text-sm font-bold uppercase tracking-[0.14em] text-indigo-200 md:col-span-3 md:pt-1.5 md:text-base">
           {station.years}
         </span>
         <span className="md:col-span-9">