IMPROVED - Remove dock shadows, fix bounce artifact, mac-radius icons, gallery icon

- Drop all shadows (dock, icons, tooltip, corner pills); this also removes the
  square that showed behind an icon mid-bounce.
- Bounce now moves the whole tile (logo bg lives on the animated element), so
  nothing is left behind.
- Icons use a ~22% macOS-like corner radius (art carries its own shape).
- Portfolio gets an original photo/gallery icon (not Apple's system icon).

public/dock/portfolio.svg

@@ -1,13 +1,18 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
 <defs>
-<linearGradient id="bg" x1="0" y1="0" x2="0" y2="1"><stop offset="0" stop-color="#454b57"/><stop offset="1" stop-color="#1c2027"/></linearGradient>
+<linearGradient id="bg" x1="0" y1="0" x2="1" y2="1">
+<stop offset="0" stop-color="#4aa8ff"/><stop offset="1" stop-color="#7b5cff"/></linearGradient>
 <linearGradient id="gl" x1="0" y1="0" x2="0" y2="1">
-<stop offset="0" stop-color="#fff" stop-opacity="0.26"/><stop offset="0.5" stop-color="#fff" stop-opacity="0"/></linearGradient>
+<stop offset="0" stop-color="#fff" stop-opacity="0.30"/><stop offset="0.5" stop-color="#fff" stop-opacity="0"/></linearGradient>
+<clipPath id="card"><rect x="27" y="31" width="46" height="38" rx="7"/></clipPath>
 </defs>
-<rect x="0" y="0" width="100" height="100" rx="28" fill="url(#bg)"/>
-<rect x="0" y="0" width="100" height="100" rx="28" fill="url(#gl)"/>
-<rect x="0.75" y="0.75" width="98.5" height="98.5" rx="27.25" fill="none" stroke="#fff" stroke-opacity="0.14" stroke-width="1.5"/>
-<g fill="#fff">
-<rect x="32" y="32" width="15" height="15" rx="4"/><rect x="53" y="32" width="15" height="15" rx="4"/>
-<rect x="32" y="53" width="15" height="15" rx="4"/><rect x="53" y="53" width="15" height="15" rx="4"/></g>
+<rect x="0" y="0" width="100" height="100" rx="22" fill="url(#bg)"/>
+<rect x="0" y="0" width="100" height="100" rx="22" fill="url(#gl)"/>
+<rect x="0.75" y="0.75" width="98.5" height="98.5" rx="21.25" fill="none" stroke="#fff" stroke-opacity="0.18" stroke-width="1.5"/>
+<rect x="27" y="31" width="46" height="38" rx="7" fill="#ffffff"/>
+<g clip-path="url(#card)">
+<circle cx="40" cy="44" r="5.5" fill="#ffc23d"/>
+<path d="M27 69 L43 52 L53 61 L61 51 L73 69 Z" fill="#37b877"/>
+<path d="M55 69 L66 57 L73 64 L73 69 Z" fill="#2c9c86"/>
+</g>
 </svg>