feat: implement delete photo flow with Azure cleanup and UI integration

[git-Rag]

Issue: #363

• Adds delete button on My Uploads grid and slider view
• Implements backend DELETE route to remove images
• Deletes image from Azure Blob Storage
• Cleans up MongoDB photo documents
• Syncs UI immediately after deletion

Testing

• Uploaded multiple photos
• Deleted from grid and full-screen view
• Verified deletion in Azure container
• Verified DB cleanup
• Restarted app and confirmed persistence

Screens / Video

Attached a screen recording showing full delete flow.

deleteButtonTest.mp4

Closes: #363

[OpenGitBot]

Hey @git-Rag

Thanks for opening this PR 🚀. Mentor will review your pull request soon and till then, keep contributing and stay calm.

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[git-Rag]

Added toast notifications to inform users whether a photo deletion was successful or failed.

Delete Feedback Preview

Success Toast

Failure Toast

[23abdul23]

@git-Rag

change the Unsuccesfull icon from RED to GREY

[OpenGitBot]

Hey @git-Rag

Your PR has been merged 🥳🥳 and you have earned 40 points.

Thanks for contributing in OpenCode'25✨✨