feat: overhaul competence pages, unify brand colors, and polish site integrity

- Rewrote all 5 competence pages (Kabeltiefbau, Bohrtechnik, Glasfaser, Planung, Vermessung) with factual data from references
- Unified brand colors: replaced toxic neon green with brand-aligned teal (#10a379)
- Fixed ReferencesSlider injection in dynamic MDX pages
- Enhanced Footer with icon parity, improved branding placement, and unified hover effects
- Refined Header with 3D micro-animations and improved dropdown visibility
- Fixed localized tracking API (rewrites for /stats/api/send)
- Resolved ReferenceErrors in InteractiveGermanyMap and Header state management
- Cleaned reference titles and truncated metadata in lists

content/de/referenzen/eisenhuettenstadt.mdx

@@ -1,9 +1,9 @@
 ---
-title: "Kabelverbindung U30 - T10, 15890 Eisenhüttenstadt"
+title: "Kabelverbindung U30 - T10, Eisenhüttenstadt"
 client: "ArcelorMittal Eisenhüttenstadt GmbH"
-date: "2019-12-31"
+date: "2019-07-01"
 dateString: "07/2019 bis 12/2019"
-location: "Eisenhüttenstadt"
+location: "15890 Eisenhüttenstadt"
 featuredImage: "/assets/photos/Etib_E-tib_Tiefbau_Guben_Netzanbindung_Energie_Vermessung_(24_von_99)_groß2.jpg"
 ---