Review update and delete

[ayshadogo]

Description:

PATCH /api/v1/reviews/:id and DELETE /api/v1/reviews/:id.

Tasks:

• Only review author can edit/delete
• Edit window: within 30 days of creation
• Deletion recalculates artist average rating
• Edited reviews marked with badge

Acceptance Criteria:

• Only author can edit/delete
• Edit window enforced
• Average rating recalculated on deletion

[guptakumarranjeet150]

Hey team,

I would love to take this on. My planned approach:

• Implement backend logic for Review update and delete with strict schema validation and idempotent execution.
• Add integration test suites for standard invocations and boundary/error conditions.

Looking forward to collaborating on this—please assign!