feat: redesign page heroes, implement organic markers, and streamline contact flow

- Refined hero sections for About, Blog, Websites, and Case Studies for a bespoke industrial entry point.
- Redesigned Marker component using layered SVG paths for an organic, hand-drawn highlighter effect.
- Restored technical precision in ArchitectureVisualizer with refined line thickness.
- Streamlined contact page by removing generic headers and prioritizing the configurator/gateway.
- Updated technical references to reflect self-hosted Gitea infrastructure.
- Cleaned up unused imports and addressed linting warnings across modified pages.

apps/web/package.json

@@ -58,6 +58,7 @@
     "lucide-react": "^0.468.0",
     "mermaid": "^11.12.2",
     "next": "^16.1.6",
+    "nodemailer": "^8.0.1",
     "playwright": "^1.58.1",
     "prismjs": "^1.30.0",
     "puppeteer": "^24.36.1",
@@ -86,6 +87,7 @@
     "@next/eslint-plugin-next": "^16.1.6",
     "@tailwindcss/typography": "^0.5.15",
     "@types/node": "^25.0.6",
+    "@types/nodemailer": "^7.0.10",
     "@types/prismjs": "^1.26.5",
     "@types/qrcode": "^1.5.6",
     "autoprefixer": "^10.4.20",