On desktop, an abandoned browser sign-in blocked every T3 Connect sign-in for 3 minutes. A new attempt now replaces the stale Clerk flow, and a Cancel bar resets the sheet. Takeover of #22708.

Co-authored-by: steve-ai-vibe <steve.ai.vibe@gmail.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>