feat: otp improvement on mobile

[LucasXu0]

Feature Preview

• Improved OTP workflow on mobile
• Added the continue with email in settings page

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PR Checklist

• My code adheres to AppFlowy's Conventions
• I've listed at least one issue that this PR fixes in the description above.
• I've added a test(s) to validate changes in this PR, or this PR only contains semantic changes.
• All existing tests are passing.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request improves the OTP (One-Time Password) and sign-in experience on mobile and desktop. It refactors the sign-in screen, enhances third-party sign-in button styling, prevents multiple pushes of the 'Continue with Magic Link or Passcode' page, improves the sign-in with magic link functionality, updates local AI dependencies, and adjusts the bottom padding on the desktop sign-in screen.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Refactored the sign-in screen to remove mobile-specific logic and loading screens, streamlining the sign-in process.	Removed mobile-specific conditional rendering in SignInScreen. Removed MobileLoadingScreen and MobileSignInScreen. Removed the import of universal_platform and helpers.dart in SignInScreen. Added logging for sign-in errors in SignInScreen.	frontend/appflowy_flutter/lib/user/presentation/screens/sign_in_screen/sign_in_screen.dart
Enhanced the third-party sign-in buttons on the mobile sign-in screen with improved styling and theming.	Modified _buildThirdPartySignInButtons to accept BuildContext. Used AppFlowyTheme to style the 'or' text in the third-party sign-in buttons. Updated the color of the 'or' text to use the secondary text color from the theme.	frontend/appflowy_flutter/lib/user/presentation/screens/sign_in_screen/mobile_sign_in_screen.dart
Implemented a mechanism to prevent multiple pushes of the 'Continue with Magic Link or Passcode' page, ensuring a smoother user experience.	Added a boolean flag _hasPushedContinueWithMagicLinkOrPasscodePage to track if the page has already been pushed. Added a check to prevent pushing the 'Continue with Magic Link or Passcode' page multiple times. Clear the error state of the email field when navigating to the magic link/passcode page.	frontend/appflowy_flutter/lib/user/presentation/screens/sign_in_screen/widgets/continue_with/continue_with_email_and_password.dart
Improved the sign-in with magic link functionality by adding logging and preventing concurrent submissions.	Added a check to prevent multiple concurrent sign-in with magic link requests. Added logging for the sign-in with magic link process.	frontend/appflowy_flutter/lib/user/application/sign_in_bloc.dart
Updated the commit IDs for local AI-related dependencies in the rust-lib Cargo.toml file.	Updated the commit ID for af-local-ai. Updated the commit ID for af-plugin. Updated the commit ID for af-mcp.	frontend/rust-lib/Cargo.toml
Adjusted the bottom padding on the desktop sign-in screen based on the platform.	Added a conditional bottom padding based on the platform (desktop vs. other).	frontend/appflowy_flutter/lib/user/presentation/screens/sign_in_screen/desktop_sign_in_screen.dart

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[sourcery-ai]

Hey @LucasXu0 - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider adding a comment explaining why _hasPushedContinueWithMagicLinkOrPasscodePage is needed.
• It looks like you're using Log.error and Log.info now, make sure these logs are helpful and not too verbose.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[LucasXu0]

Fix the integration test 1 in another PR.