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/en/referenzen/spreewald.mdx

@@ -1,19 +1,17 @@
 ---
-title: "Breitbandausbau FTTC, Planungsregion Spreewald"
+title: "Broadband Expansion FTTC, Spreewald Planning Region"
 client: "Telekom Deutschland GmbH"
-date: "2018-01-31"
-dateString: "09/2017 bis 01/2018"
-location: "Spreewald"
+date: "2017-09-01"
+dateString: "09/2017 to 01/2018"
+location: "Spreewald Planning Region"
 featuredImage: "/assets/photos/DSC01129.JPG"
 ---
 
-- 4.006 m Kabelgraben ausheben und verfüllen
-- 4.006 m Verlegung PE-Schutzrohr 50 x 4,6 mm
-- 13.008 m Horizontalspülbohrung D 50
-- 94.951 m Einblasen von Kabel/Rohren unbelegt
-- 42 Stück Stellen von Multifunktionsgehäusen
-- Aufbau von Energieanschlusssäulen
-- Aufbau elektrischer Anlagen 230V
-- Koordination mit Energieversorgungsunternehmen
-- Inbetriebnahme der elektrischen Anlagen
-- Oberflächen- und Tiefbauarbeiten für Multifunktionsgehäuse
+- 4,006 m cable trench excavation and backfilling
+- 4,006 m installation of PE protection pipe 50 x 4.6 mm
+- 13,008 m horizontal directional drilling D 50
+- 94,951 m blowing in of cables/pipes (unoccupied)
+- 42 units installation of multi-functional cabinets
+- Setup of energy connection pillars and electrical systems 230V
+- Coordination with utility companies and commissioning of the electrical systems
+- Surface and civil engineering work for multi-function enclosures