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/bomlitz.mdx

@@ -1,10 +1,10 @@
 ---
-title: "Breitbandausbau FTTH, Planungsregion Bomlitz"
-client: "Telekom Deutschland GmbH"
-date: "2018-12-31"
-dateString: "04/2018 bis 12/2018"
-location: "Bomlitz"
-featuredImage: "/assets/photos/Etib_E-tib_Tiefbau_Guben_Netzanbindung_Energie-100.jpg"
+title: "Breitbandausbau FTTH, Bomlitz / Schwarmstedt"
+client: "inexio Informationstechnologie und Telekommunikation GmbH"
+date: "2018-08-01"
+dateString: "08/2018 bis 03/2021"
+location: "29699 Bomlitz / 29690 Schwarmstedt"
+featuredImage: "/assets/photos/Etib_E-tib_Tiefbau_Guben_Netzanbindung_Energie-60.jpg"
 ---
 
 - 88.890 m Leitungstrasse herstellen (Tiefbau/HDD)