- Move agent-workspace/domain-skills/x.com/ to .../x/ to match repo
convention (siblings use bare platform names like 'tiktok' / 'youtube'
or kebab-case like 'booking-com'; nothing else uses a literal dot in
a dir name).
- Guard the compose-textarea and post-button querySelector lookups so
the snippet raises a clear RuntimeError if the elements aren't there
yet, instead of throwing a confusing JS TypeError on
el.getBoundingClientRect().
Saurav Panda