feat : add edited message indicator with timestamp

[kavin553]

Summary

• Added edited and editedAt fields to direct messages.
• Display an Edited badge after a message is edited.
• Show the edit timestamp on hover.
• Synced edited state through socket events.
• Preserved message order and existing functionality.

Testing

• Sent new messages
• Edited messages
• Verified badge and timestamp
• Tested sender and receiver synchronization
• Refreshed pages to verify persistence

[vercel]

@kavin553 is attempting to deploy a commit to the Sunil Kumar's projects Team on Vercel.

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[kavin553]

Implemented the requested feature successfully. ✅

Changes made

• Added edited and editedAt fields to direct messages.
• Displayed an Edited indicator after a message is modified.
• Added a tooltip showing the edit timestamp.
• Synced edited state through Socket.IO for both sender and receiver.
• Preserved existing message order and functionality.

Testing

• ✅ Sent new messages
• ✅ Edited messages
• ✅ Verified real-time updates
• ✅ Confirmed tooltip displays the edit timestamp
• ✅ Tested refresh persistence and delete functionality

Looking forward to your feedback. Thank you for reviewing! 🚀