## What does this PR do?<!-- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change. -->- Fixes #XXXX (GitHub issue number)- Fixes CAL-XXXX (Linear issue number - should be visible at the bottom of the GitHub issue description)## Visual Demo (For contributors especially)A visual demonstration is strongly recommended, for both the original and new change **(video / image - any one)**.#### Video Demo (if applicable):- Show screen recordings of the issue or feature.- Demonstrate how to reproduce the issue, the behavior before and after the change.#### Image Demo (if applicable):- Add side-by-side screenshots of the original and updated change.- Highlight any significant change(s).## Mandatory Tasks (DO NOT REMOVE)- [ ] I have self-reviewed the code (A decent size PR without self-review might be rejected).- [ ] I have updated the developer docs in /docs if this PR makes changes that would require a [documentation change](https://cal.com/docs). If N/A, write N/A here and check the checkbox.- [ ] I confirm automated tests are in place that prove my fix is effective or that my feature works.## How should this be tested?<!-- Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration. Write details that help to start the tests -->- Are there environment variables that should be set?- What are the minimal test data to have?- What is expected (happy path) to have (input and output)?- Any other important info that could help to test that PR## Checklist<!-- Remove bullet points below that don't apply to you -->- I haven't read the [contributing guide](https://github.com/calcom/cal.com/blob/main/CONTRIBUTING.md)- My code doesn't follow the style guidelines of this project- I haven't commented my code, particularly in hard-to-understand areas- I haven't checked if my changes generate no new warnings<!-- This is an auto-generated description by cubic. -->---## Summary by cubicPolished the onboarding experience with a live calendar preview, a team bio field, and improved username handling. Updated i18n strings and added responsive breakpoints for large screens.- **New Features**  - Added right-column previews: OnboardingBrowserView in org teams and a live weekly OnboardingCalendarBrowserView for personal calendar setup.  - Introduced team bio in onboarding store and UI.  - Expanded i18n: team bio, browser view labels, and CSV invite flow.  - Added Tailwind screens for 3xl and 4xl to improve large-display layouts.- **Bug Fixes**  - Normalized usernames with slugify on default and change to prevent invalid slugs.  - Unified disabled/readonly handling for premium vs. standard username fields; respects external disabled prop and org membership.<sup>Written for commit7804fad. Summary will update automatically on new commits.</sup><!-- End of auto-generated description by cubic. -->