feat: restructure as pnpm monorepo with Tauri desktop shell

- Migrate to packages/web + packages/desktop workspace layout via git mv
- Add Tauri v2 desktop shell with @tauri-apps/plugin-http for CORS bypass
- Configure Turborepo with package-level dependsOn build graph
- Add semantic-release with exec plugin for GHA output and disabled PR comments
- Fix http:default capability scope to allow all HTTP/HTTPS origins
- Add Vite Tauri integration (clearScreen, TAURI_DEV_HOST, target, envPrefix)
- Add semantic-release.yml and release.yml GitHub Actions workflows
- Fix all Biome lint errors (noArrayIndexKey, noNonNullAssertion, button types)

packages/web/src/components/ui/separator.tsx

@@ -0,0 +1,21 @@
+import { cn } from "@/lib/utils";
+import * as SeparatorPrimitive from "@radix-ui/react-separator";
+import { forwardRef } from "react";
+
+export const Separator = forwardRef<
+	React.ComponentRef<typeof SeparatorPrimitive.Root>,
+	React.ComponentPropsWithoutRef<typeof SeparatorPrimitive.Root>
+>(({ className, orientation = "horizontal", decorative = true, ...props }, ref) => (
+	<SeparatorPrimitive.Root
+		ref={ref}
+		decorative={decorative}
+		orientation={orientation}
+		className={cn(
+			"shrink-0 [background:var(--border)]",
+			orientation === "horizontal" ? "h-px w-full" : "h-full w-px",
+			className,
+		)}
+		{...props}
+	/>
+));
+Separator.displayName = SeparatorPrimitive.Root.displayName;