fix: mobile responsiveness across all pages

- SiteNav: add horizontal scroll for 8 tabs on mobile
- NotificationCenter: full-width dropdown on mobile
- ContentStats/Locations/TechSpecs: scrollable tab bars
- FrustrationTable: fix selector text overflow
- FrustrationByPageTable: horizontal scroll on mobile
- CDN: better stat card grid breakpoints
- Home: reduce stat card height, prevent button wrap
- Billing: shorter invoice labels on mobile
- Bump @ciphera-net/ui to 0.2.6 (AppLauncher mobile fix)

package.json

@@ -12,7 +12,7 @@
     "test:watch": "vitest"
   },
   "dependencies": {
-    "@ciphera-net/ui": "^0.2.5",
+    "@ciphera-net/ui": "^0.2.6",
     "@ducanh2912/next-pwa": "^10.2.9",
     "@phosphor-icons/react": "^2.1.10",
     "@simplewebauthn/browser": "^13.2.2",