feat(brand): wire favicon chain to real product logo

SVG primary + 32px PNG fallback + Apple touch icon. Removes the
placeholder 3-wavy-lines favicon.

public/favicon.svg

@@ -1,8 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
-  <rect width="32" height="32" rx="6" fill="#060a13"/>
-  <g fill="none" stroke="#f0b429" stroke-width="1.4" stroke-linecap="round">
-    <path d="M4 10 Q10 6 16 12 T28 10"/>
-    <path d="M4 16 Q10 12 16 18 T28 16"/>
-    <path d="M4 22 Q10 18 16 24 T28 22"/>
-  </g>
-</svg>

src/layouts/BaseLayout.astro

@@ -31,7 +31,9 @@ const ogUrl = new URL(ogImage, Astro.site ?? 'https://www.cameleer.io').toString
     <meta name="description" content={description} />
     <link rel="canonical" href={canonical} />
 
-    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <link rel="icon" type="image/svg+xml" href="/cameleer-logo.svg" />
+    <link rel="icon" type="image/png" sizes="32x32" href="/icons/cameleer-32.png" />
+    <link rel="apple-touch-icon" href="/icons/cameleer-180.png" />
 
     <meta property="og:type" content="website" />
     <meta property="og:site_name" content="Cameleer" />