polish: complete copy rewrite + i18n fixes + dead link cleanup

- Rewrite all site copy based on founder interview: honest, outcome-focused,
  premium but approachable tone
- Hero: "Websites, software, and infrastructure — designed and built entirely around you."
- Services: "Design. Build. Run." with clear pillars (Websites, Custom Software, Infrastructure)
- Philosophy: "Your tools should belong to you." — removed Kubernetes reference
- Trust bar: concrete value props (Built From Scratch, You Own Everything, One Team, AI)
- CTA: "Ready to build something?" — direct, no fluff
- Projects: honest descriptions of what was actually delivered
- Fix all French translation gaps: hero accent word, configurator cards,
  project descriptions, footer links, philosophy quote
- Fix dead links: footer service links → /#services, work/about → anchors
- Restore case study links (dynamic route exists)
- Fix mobile hero padding (pt-40 → pt-24)
- AI narrative positioned honestly as add-on capability

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/sections/Configurator.tsx

@@ -80,7 +80,7 @@ export default function Configurator() {
                   className="flex flex-col gap-3 pt-2"
                 >
                   <p className="text-xs font-semibold uppercase tracking-label text-outline/70">
-                    How it works
+                    {t('howItWorks')}
                   </p>
                   {/* Vertical accent line + steps */}
                   <div className="flex gap-4">
@@ -99,7 +99,7 @@ export default function Configurator() {
                   className="pt-1 flex items-center gap-2"
                 >
                   <ShieldCheck size={14} strokeWidth={1.75} className="text-primary flex-shrink-0" aria-hidden="true" />
-                  <p className="text-xs text-outline">No commitment required</p>
+                  <p className="text-xs text-outline">{t('noCommitment')}</p>
                 </motion.div>
               </motion.div>
             </div>