fix: restore complete source code and fix launchers

- Copy complete source code packages from original CodeNomad project
- Add root package.json with npm workspace configuration
- Include electron-app, server, ui, tauri-app, and opencode-config packages
- Fix Launch-Windows.bat and Launch-Dev-Windows.bat to work with correct npm scripts
- Fix Launch-Unix.sh to work with correct npm scripts
- Launchers now correctly call npm run dev:electron which launches Electron app

packages/ui/src/components/empty-state.tsx

@@ -0,0 +1,51 @@
+import { Component } from "solid-js"
+import { Loader2 } from "lucide-solid"
+
+const codeNomadIcon = new URL("../images/CodeNomad-Icon.png", import.meta.url).href
+
+interface EmptyStateProps {
+  onSelectFolder: () => void
+  isLoading?: boolean
+}
+
+const EmptyState: Component<EmptyStateProps> = (props) => {
+  return (
+    <div class="flex h-full w-full items-center justify-center bg-surface-secondary">
+      <div class="max-w-[500px] px-8 py-12 text-center">
+        <div class="mb-8 flex justify-center">
+          <img src={codeNomadIcon} alt="CodeNomad logo" class="h-24 w-auto" loading="lazy" />
+        </div>
+
+        <h1 class="mb-3 text-3xl font-semibold text-primary">CodeNomad</h1>
+        <p class="mb-8 text-base text-secondary">Select a folder to start coding with AI</p>
+
+
+        <button
+          onClick={props.onSelectFolder}
+          disabled={props.isLoading}
+          class="mb-4 button-primary"
+        >
+          {props.isLoading ? (
+            <>
+              <Loader2 class="h-4 w-4 animate-spin" />
+              Selecting...
+            </>
+          ) : (
+            "Select Folder"
+          )}
+        </button>
+
+        <p class="text-sm text-muted">
+          Keyboard shortcut: {navigator.platform.includes("Mac") ? "Cmd" : "Ctrl"}+N
+        </p>
+
+        <div class="mt-6 space-y-1 text-sm text-muted">
+          <p>Examples: ~/projects/my-app</p>
+          <p>You can have multiple instances of the same folder</p>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default EmptyState