LLeMbas's own window, the leaf icon, one name for the app

- The window has no system decoration: a local title bar webview (agent
  state, a native menu with the tray's items, window buttons) above the
  content webview, which stays remote with no IPC. Laid out on resize,
  with a frame to resize by unless maximized.
- Icons from the transparent pixel leaf, not the server's tiled icon.
- productName llembas-desktop: package, .desktop file and the window's
  app id now match (KWin showed a generic icon); the visible name stays
  LLeMbas through a desktop template. Replaces the 0.1.0 package l-le-mbas.
- The bundled CLI is a resource in the app's own directory, not
  /usr/bin/lembas.

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

ui/app.css

@@ -1,55 +1,4 @@
-/* The first-run page: the LLeMbas look (Moria dark, Shire light), no build step. */
-:root {
-  --font-ui: ui-monospace, "JetBrains Mono", "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
-  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
-  --text-sm: 0.8125rem;
-  --text-base: 0.9375rem;
-  --text-xl: 1.5rem;
-  --sp-2: 0.5rem;
-  --sp-3: 0.75rem;
-  --sp-4: 1rem;
-  --sp-6: 1.5rem;
-  --sp-8: 2rem;
-  --radius: 2px;
-  --press: 2px;
-  --control-h: 2.5rem;
-  --card-max: 34rem;
-
-  color-scheme: dark;
-  --bg: #0B0D10;
-  --surface: #11151A;
-  --surface-hover: #1D232B;
-  --border: #26303A;
-  --border-strong: #5C6976;
-  --ink: #E2E8EC;
-  --ink-muted: #A6B2BC;
-  --accent: #8FD8E8;
-  --accent-hover: #B4E6F1;
-  --accent-ink: #061418;
-  --leaf: #7EE081;
-  --warning: #F0A840;
-  --shadow-card: 4px 4px 0 rgba(0, 0, 0, 0.55);
-}
-
-@media (prefers-color-scheme: light) {
-  :root {
-    color-scheme: light;
-    --bg: #F1EAD6;
-    --surface: #F8F3E5;
-    --surface-hover: #ECE4CF;
-    --border: #CBBF9D;
-    --border-strong: #2A2E22;
-    --ink: #1F2418;
-    --ink-muted: #474D3B;
-    --accent: #285F3C;
-    --accent-hover: #1F4D30;
-    --accent-ink: #F8F3E5;
-    --leaf: #3D6B1C;
-    --warning: #7E5200;
-    --shadow-card: 4px 4px 0 var(--border-strong);
-  }
-}
-
+/* The first-run page. Tokens in tokens.css. */
 * { box-sizing: border-box; }
 
 html, body { margin: 0; min-height: 100%; }