feat(builder): add BuzzForm schema import/export and skip autosave for empty forms

[ladparth]

Key Changes:

• Added BuzzForm schema import support in Form Manager:
  • Accepts both Builder backup JSON and BuzzForm schema JSON.
  • Unified import parsing/validation flow with format detection.
  • Improved import confirmation UI to show detected format and node count.
  • Added paste JSON mode with drag/drop and clipboard paste support.
• Added BuzzForm schema export support in Export Sheet:
  • New BuzzForm Schema tab with JSON preview.
  • Added schema download action (.schema.json).
  • Kept existing Builder backup export and clarified labels (Builder Backup vs BuzzForm Schema).
• Enhanced schema import naming behavior:
  • When importing schema files, derive form name from filename in title case.
  • Example: account-form.json -> Account Form.
  • Applied only to BuzzForm schema imports (Builder backup keeps document metadata name).
• Implemented autosave skip logic for empty forms:
  • Prevents new blank forms from being saved/indexed immediately.
  • Saves start after first meaningful content change.
  • Avoids cluttering saved forms with untouched “Untitled form” entries.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
buzzform	Ready	Preview, Comment	Feb 23, 2026 6:35pm