OAuth users don't have passwords set, so they should not be prompted for password confirmation when performing destructive actions. This fix:
- Detects OAuth users via the hasPassword() method
- Skips password confirmation in modal for OAuth users
- Keeps text name confirmation as the final step
- Centralizes logic in helper functions for maintainability
- Changes button text to "Confirm" when password step is skipped
Fixes#4457🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
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