- Steps 4-5: the Skip <form> was nested inside the step form, which closed the
  outer form early and left Next/Complete outside it (button did nothing).
- Step detection no longer requires a profile photo that onboarding never
  asked for (users were always sent back to step 1). Step 1 now has an
  optional photo upload.
- x-ui.select and x-ui.textarea ignored :value, so saved answers (bio,
  experience, equipment, availability...) re-rendered empty and looked unsaved.
  Fixes every form using them (campaign edit, company profile, filters).
- Country and timezone are dropdowns instead of free text that had to match
  an exact code; website accepts "mysite.com".
- Language tags are committed on blur, not only on Enter (mobile).
- Validation errors are summarised at the top of each step.
- Dashboard CTA points to portfolio upload once onboarding is done.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>