[chengjiahao1234]

Type of Change

• Content Update (team)

Summary

Update Mahdi S. Hosseini's Mila affiliation to Associate Academic Member and place the PI's roles in the requested order.

The Team profile now reads:

Mahdi S. Hosseini
Lab Director, Assistant Professor at Concordia University
Associate Academic Member of Mila-Quebec AI Institute
Adjunct Professor at McGill University

Changes Made

• _data/principal_investigator.yml: replace the former Affiliate Member title and order the role lines as Concordia, Mila, then McGill.
• _pages/home.md: update the About us paragraph to the same Mila title and affiliation order for consistency.
• Preserve the PI's name styling, portrait, email, profile URLs, and all other team data. No template or CSS changes.

Testing Checklist

• Changes display correctly on desktop (1920x1080)
• Changes display correctly on tablet (768x1024)
• Changes display correctly on mobile (375x667)
• Tested in light theme
• Tested in dark theme
• Local images load correctly; all six PI profile/contact URLs remain unchanged
• No console errors or horizontal overflow
• Ran bundle exec jekyll serve locally without errors
• Jekyll build and git diff --check passed
• YAML and rendered-page assertions confirm the exact role text and order

Screenshots (if applicable)

Desktop, tablet, and mobile screenshots were reviewed locally in both themes; not attached.

Related Issues

None.

Additional Notes

• Uses the wording supplied by the PI. This updates the lab website only, not Mila's external directory.
• Existing non-blocking Ruby native-extension warnings remain; the build and local server succeed.
• Ready for admin review; no merge or production deployment has been performed.

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By submitting this PR, I confirm:

• I have tested these changes locally
• I have followed the code standards in DEVELOPMENT.md
• I have updated documentation if needed (not required for this content-only update)
• I am ready for this to be reviewed and merged