Social Metrics Tracking

[rodrigo685]

This includes adding analytics events for key social interactions (login + friendship actions), and exposing friendship_id through the social service so it can be included in tracking payloads.

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Scope / Tasks

• Add new analytics events for:

• - Request Friend

• - Accept Friend

• - Block/Delete

• Expose friendship_id from the social service layer

• Ensure events are properly emitted through the metrics pipeline (Segment integration / analytics dispatcher)

Expected Behavior

• Sending a friend request emits Request Friend
• Accepting a friend request emits Accept Friend including friendship_id when available
• Blocking/Unblocking emits Block/Unblock

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