chore(branding): replace the retired N.O.M.A.D. badge with the new logo

The Command Center header, settings sidebar, chat sidebar and README still
showed the old dotted "PROJECT N.O.M.A.D." badge with the retired backronym.
The earlier naming sweep removed the text strings but could not catch a
raster asset.

Swap in the vector primary badge from the brand kit (nomad-primary.svg) and
add object-contain so the hexagon keeps its true 0.866 aspect instead of
being stretched to fill the square boxes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -1,5 +1,5 @@
 <div align="center">
-<img src="admin/public/project_nomad_logo.webp" width="200" height="200"/>
+<img src="admin/public/nomad-primary.svg" width="200" alt="Project NOMAD"/>
 
 # Project NOMAD
 ### Knowledge That Never Goes Offline

admin/inertia/components/BouncingLogo.tsx

@@ -31,9 +31,9 @@ const FadingImage = ({  alt = "Fading image", className = "" }) => {
       isVisible ? 'opacity-100' : 'opacity-0'
     }`}>
       <img
-        src={`/project_nomad_logo.webp`}
+        src="/nomad-primary.svg"
         alt={alt}
-        className={`w-64 h-64 ${className}`}
+        className={`w-64 h-64 object-contain ${className}`}
       />
     </div>
   );

admin/inertia/components/StyledSidebar.tsx

@@ -63,7 +63,7 @@ const StyledSidebar: React.FC<StyledSidebarProps> = ({ title, items }) => {
     return (
       <div className="flex grow flex-col gap-y-5 overflow-y-auto bg-desert-sand px-6 ring-1 ring-white/5 pt-4 shadow-md">
         <div className="flex h-16 shrink-0 items-center">
-          <img src="/project_nomad_logo.webp" alt="Project NOMAD Logo" className="h-16 w-16" />
+          <img src="/nomad-primary.svg" alt="Project NOMAD Logo" className="h-16 w-16 object-contain" />
           <h1 className="ml-3 text-xl font-semibold text-text-primary">{title}</h1>
         </div>
         <nav className="flex flex-1 flex-col">

admin/inertia/components/chat/ChatSidebar.tsx

@@ -114,7 +114,7 @@ export default function ChatSidebar({
         )}
       </div>
       <div className="p-4 flex flex-col items-center justify-center gap-y-2">
-        <img src="/project_nomad_logo.webp" alt="Project NOMAD Logo" className="h-28 w-28 mb-6" />
+        <img src="/nomad-primary.svg" alt="Project NOMAD Logo" className="h-28 w-28 mb-6 object-contain" />
         <StyledButton
           onClick={() => {
             // /chat is served by the admin app itself, so navigate in place rather than

admin/inertia/layouts/AppLayout.tsx

@@ -46,9 +46,9 @@ export default function AppLayout({
         onClick={() => router.visit('/home')}
       >
         <img
-          src="/project_nomad_logo.webp"
+          src="/nomad-primary.svg"
           alt="Project NOMAD Logo"
-          className={compact ? 'h-12 w-12' : 'h-40 w-40'}
+          className={compact ? 'h-12 w-12 object-contain' : 'h-40 w-40 object-contain'}
         />
         <h1
           className={classNames(