Update assets and sitemap, remove obsolete icons and fonts

Reorganized font and image assets, replacing outdated files with new ones. Removed unused SVG icons and updated the sitemap with new URLs and last modified dates. Simplified font-face declarations to reflect the updated font structure.

docs/assets/images/icon-development.svg

@@ -1 +0,0 @@
-<svg fill="none" height="24" stroke="#521370" stroke-width="2" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="m8 9-3 3 3 3"/><path d="m16 9 3 3-3 3"/><path d="m12 4-2 16"/></svg>

docs/assets/images/icon-intelligence.svg

@@ -1 +0,0 @@
-<svg fill="none" height="24" stroke="#521370" stroke-width="2" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><circle cx="12" cy="8" r="5"/><path d="m12 16v3"/><path d="m8 17 1.5 2"/><path d="m16 17-1.5 2"/></svg>

docs/assets/images/icon-processing.svg

@@ -1 +0,0 @@
-<svg fill="none" height="24" stroke="#521370" stroke-width="2" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><rect height="14" rx="2" width="18" x="3" y="5"/><path d="m7 9 3 3-3 3"/><path d="m13 15h4"/></svg>

docs/assets/images/icon-security.svg

@@ -1 +0,0 @@
-<svg fill="none" height="24" stroke="#521370" stroke-width="2" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="m12 3 8 4v5c0 4.4-3.6 8-8 8s-8-3.6-8-8v-5z"/><path d="m12 11a2 2 0 1 0 0-4 2 2 0 0 0 0 4z"/><path d="m12 11v4"/></svg>