[saqibmanan]

Fixes #386

Problem

team-to-alumni.yml treated any deleted file under content/team/<slug>/ as that member leaving. Swapping Mihika's photo deleted the old image, so the workflow opened #368, which added content/alumnus/mihika/mihika.jpg with no profile. She is still on the team.

Changes

• The workflow now acts only when content/team/<slug>/index.md is deleted. A real removal still copies every deleted file in that folder, photo included.
• Removed the stray content/alumnus/mihika/mihika.jpg. It is the only file in that folder, and nothing references it.

Verified

The workflow's run: script was run in a throwaway git repo for old vs new, with git push / gh pr create stubbed:

commit	old	new
delete only team/mihika/mihika.jpg	alumni PR for mihika, adds alumnus/mihika/mihika.jpg	"No team members deleted"
delete whole team/aakash/	moves index.md + photo	same
both in one commit	moves aakash and mihika	moves aakash only