fix: profile import file upload, startup health check, sidebar scroll, node-pty fallback

- Change profile import from server path input to browser file upload (multipart)
- Fix startup script to wait for health check before opening browser
- Add overflow scroll with hidden scrollbar to sidebar nav
- Graceful degradation when node-pty fails to load (WSL compatibility)
- Remove rename button from profile cards
- Restrict profile name input to English letters, numbers, hyphens
- Use raw.githubusercontent.com URLs in README setup script

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/client/src/stores/hermes/profiles.ts

@@ -72,8 +72,8 @@ export const useProfilesStore = defineStore('profiles', () => {
     return profilesApi.exportProfile(name)
   }
 
-  async function importProfile(archive: string, name?: string) {
-    const ok = await profilesApi.importProfile(archive, name)
+  async function importProfile(file: File) {
+    const ok = await profilesApi.importProfile(file)
     if (ok) await fetchProfiles()
     return ok
   }