Restructure: move Vite project into app/, deploy build output to repo root

The webserver serves the repo checkout directly as static files, so
index.html at the repo root must be the production build (pointing at
hashed /assets/*.js) rather than the dev template (/src/main.tsx),
which was being served with an unrecognized application/octet-stream
MIME type and blocked by the browser.

- Move src/, public/, scripts/, server/, package.json, vite.config.ts,
  tsconfig.json, .env(.example), and the dev index.html into app/.
- Add app/scripts/deploy.mjs: copies app/dist/* into the repo root
  after every `vite build`, cleaning up stale hashed filenames.
- Wire it into `npm run build` (app/package.json).
- Update run.sh to operate from app/, and .gitignore for the new layout.
- Commit the current build output (index.html, assets/, manifest,
  sw.js, workbox-*.js, favicon.svg, icons/, LICENSE) to the repo root.
- Update README with the new project layout and deployment model.

app/src/components/DerezLogo.tsx

@@ -0,0 +1,72 @@
+import { useId } from "react";
+
+/**
+ * The derez.ai logo (icon + wordmark), taken from https://derez.ai/assets/images/logo.svg
+ */
+export function DerezLogo({ height = 26, withText = true }: { height?: number; withText?: boolean }) {
+  const gid = useId().replace(/:/g, "");
+  const width = withText ? (height * 132) / 34 : height;
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width={width}
+      height={height}
+      viewBox={withText ? "0 0 132 34" : "0 0 34 34"}
+      role="img"
+      aria-label="derez.ai"
+    >
+      <defs>
+        <linearGradient id={`box-bg-${gid}`} x1="0" y1="0" x2="0" y2="1">
+          <stop offset="0%" stopColor="#003545" />
+          <stop offset="100%" stopColor="#00202e" />
+        </linearGradient>
+      </defs>
+
+      <rect
+        x="0"
+        y="0"
+        width="34"
+        height="34"
+        rx="10"
+        fill={`url(#box-bg-${gid})`}
+        stroke="#005570"
+        strokeWidth="1.2"
+      />
+      <rect x="6" y="11" width="22" height="15" rx="2.5" fill="none" stroke="#00f5ff" strokeWidth="1.8" />
+      <path d="M17 11V7" stroke="#00f5ff" strokeWidth="1.8" strokeLinecap="round" />
+      <circle cx="17" cy="5.5" r="1.5" fill="#00f5ff" />
+      <circle cx="10" cy="15.5" r="1" fill="#00f5ff" />
+      <circle cx="14" cy="15.5" r="1" fill="#00f5ff" />
+      <path d="M10 20h14" stroke="#00f5ff" strokeWidth="1.5" strokeLinecap="round" />
+
+      {withText && (
+        <text
+          x="46"
+          y="23"
+          fill="#00f5ff"
+          fontFamily="'Courier New', Courier, monospace"
+          fontSize="17"
+          fontWeight="700"
+          letterSpacing="-0.5"
+        >
+          derez.ai
+        </text>
+      )}
+    </svg>
+  );
+}
+
+/** The logo wrapped in a link to the derez.ai homepage. */
+export function DerezLogoLink({ height = 26 }: { height?: number }) {
+  return (
+    <a
+      className="brand-link"
+      href="https://derez.ai/"
+      target="_blank"
+      rel="noopener noreferrer"
+      title="derez.ai — AI Agent Hosting"
+    >
+      <DerezLogo height={height} />
+    </a>
+  );
+}