feat: rebrand to Slate (logo, palette, copy, Launch button)

- Wordmark SVG + favicon (#FF1F8F → #00D4FF gradient)
- Page title: Slate — AI App Builder
- Header logo via inline component (no external font deps)
- Deploy button label -> Launch
- Chat placeholder + example prompt rebranded
- Replace upstream accent palette with magenta primary, add cyan2 for accents
- Settings tab notes upstream remains stackblitz-labs/bolt.diy

public/favicon.svg

@@ -1,4 +1,10 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" width="16" height="16">
-  <rect width="16" height="16" rx="2" fill="#8A5FFF" />
-  <path d="M7.398 9.091h-3.58L10.364 2 8.602 6.909h3.58L5.636 14l1.762-4.909Z" fill="#fff" />
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32">
+  <defs>
+    <linearGradient id="g" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#FF1F8F"/>
+      <stop offset="100%" stop-color="#00D4FF"/>
+    </linearGradient>
+  </defs>
+  <rect width="32" height="32" rx="7" fill="url(#g)"/>
+  <path d="M9.5 21.5c0 2.1 1.9 3.5 4.7 3.5 2.6 0 4.5-1.3 4.5-3.3 0-2-1.4-2.8-3.7-3.3l-1.7-.4c-2.7-.6-4.7-2-4.7-4.9 0-3.2 2.7-5.4 6.6-5.4 3.8 0 6.4 2 6.5 5.2h-3c-.1-1.7-1.5-2.7-3.5-2.7-2 0-3.4 1-3.4 2.5 0 1.5 1.2 2.3 3.4 2.7l1.7.4c3.1.7 5 2.2 5 5.1 0 3.6-2.7 5.8-7 5.8-4.1 0-6.9-2-7-5.4z" fill="#FFFFFF"/>
 </svg>

public/logo.svg

@@ -1,15 +1,11 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="95" height="83" fill="none"><g filter="url(#a)"><path fill="url(#b)" d="M66.657 0H28.343a7.948 7.948 0 0 0-6.887 3.979L2.288 37.235a7.948 7.948 0 0 0 0 7.938L21.456 78.43a7.948 7.948 0 0 0 6.887 3.979h38.314a7.948 7.948 0 0 0 6.886-3.98l19.17-33.256a7.948 7.948 0 0 0 0-7.938L73.542 3.98A7.948 7.948 0 0 0 66.657 0Z"/></g><g filter="url(#c)"><path fill="#fff" fill-rule="evenodd" d="M50.642 59.608c-3.468 0-6.873-1.261-8.827-3.973l-.69 3.198-12.729 6.762 1.374-6.762 9.27-42.04h11.35l-3.279 14.818c2.649-2.9 5.108-3.973 8.26-3.973 6.81 0 11.35 4.477 11.35 12.675 0 8.45-5.233 19.295-16.079 19.295Zm4.351-16.9c0 3.91-2.774 6.874-6.368 6.874-2.018 0-3.847-.757-5.045-2.08l1.766-7.757c1.324-1.324 2.837-2.08 4.603-2.08 2.711 0 5.044 2.017 5.044 5.044Z" clip-rule="evenodd"/></g><defs><filter id="a" width="92.549" height="82.409" x="1.226" y="0" color-interpolation-filters="sRGB" filterUnits="userSpaceOnUse"><feFlood flood-opacity="0" result="BackgroundImageFix"/><feBlend in="SourceGraphic" in2="BackgroundImageFix" result="shape"/><feColorMatrix in="SourceAlpha" result="hardAlpha" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 127 0"/><feOffset/><feGaussianBlur stdDeviation="1.717"/><feComposite in2="hardAlpha" k2="-1" k3="1" operator="arithmetic"/><feColorMatrix values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.65 0"/><feBlend in2="shape" result="effect1_innerShadow_615_13380"/></filter><filter id="c" width="38.326" height="48.802" x="28.396" y="16.793" color-interpolation-filters="sRGB" filterUnits="userSpaceOnUse"><feFlood flood-opacity="0" result="BackgroundImageFix"/><feBlend in="SourceGraphic" in2="BackgroundImageFix" result="shape"/><feColorMatrix in="SourceAlpha" result="hardAlpha" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 127 0"/><feOffset/><feGaussianBlur stdDeviation=".072"/><feComposite in2="hardAlpha" k2="-1" k3="1" operator="arithmetic"/><feColorMatrix values="0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.95 0"/><feBlend in2="shape" result="effect1_innerShadow_615_13380"/></filter>
-<linearGradient id="b" x1="47.5" x2="47.5" y1="0" y2="82.409" gradientUnits="userSpaceOnUse">
-    <stop offset="0%" stop-color="#F8F5FF" />
-    <stop offset="10%" stop-color="#F0EBFF" />
-    <stop offset="20%" stop-color="#E1D6FF" />
-    <stop offset="30%" stop-color="#CEBEFF" />
-    <stop offset="40%" stop-color="#B69EFF" />
-    <stop offset="50%" stop-color="#9C7DFF" />
-    <stop offset="60%" stop-color="#8A5FFF" />
-    <stop offset="70%" stop-color="#7645E8" />
-    <stop offset="80%" stop-color="#6234BB" />
-    <stop offset="90%" stop-color="#502D93" />
-    <stop offset="100%" stop-color="#2D1959" />
-</linearGradient>
-</defs></svg>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 132 32" width="132" height="32">
+  <defs>
+    <linearGradient id="slate-grad" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#FF1F8F"/>
+      <stop offset="100%" stop-color="#00D4FF"/>
+    </linearGradient>
+  </defs>
+  <rect x="0" y="4" width="24" height="24" rx="6" fill="url(#slate-grad)"/>
+  <path d="M7.5 21.2c0 1.6 1.4 2.6 3.4 2.6 1.9 0 3.3-.9 3.3-2.4 0-1.4-1-2-2.7-2.4l-1.3-.3c-2-.4-3.5-1.5-3.5-3.6 0-2.4 2-4.1 4.9-4.1 2.8 0 4.7 1.5 4.8 3.9h-2.2c-.1-1.3-1.1-2-2.6-2-1.5 0-2.5.7-2.5 1.9 0 1.1.9 1.7 2.5 2l1.3.3c2.3.5 3.7 1.6 3.7 3.8 0 2.6-2 4.3-5.2 4.3-3 0-5.1-1.5-5.2-4z" fill="#FFFFFF"/>
+  <text x="32" y="24" font-family="Inter, system-ui, -apple-system, Segoe UI, sans-serif" font-weight="700" font-size="22" fill="#FFFFFF" letter-spacing="-0.5">Slate</text>
+</svg>