Refactor project opening and add status bar tooltips

packages/app/src/desktop/pick-directory.ts

@@ -0,0 +1,23 @@
+import { getTauri } from '@/utils/tauri'
+
+export async function pickDirectory(): Promise<string | null> {
+  const open = getTauri()?.dialog?.open
+  if (typeof open !== 'function') {
+    throw new Error('Tauri dialog open() is unavailable in this environment.')
+  }
+
+  const selection = await open({
+    directory: true,
+    multiple: false,
+  })
+
+  if (selection === null) {
+    return null
+  }
+
+  if (typeof selection === 'string') {
+    return selection
+  }
+
+  throw new Error('Unexpected directory picker response.')
+}