Table which stores mr approvers post-merge for compliance purposes. Requirements: Create `merge_requests_approval_rules_approved_approvers` table with: - Columns: - `approval_rule_id` (bigint, NOT NULL, composite PK) - `user_id` (bigint, NOT NULL, composite PK) - `group_id` (bigint, nullable) - `project_id` (bigint, nullable) - Composite primary key on `(approval_rule_id, user_id)` - Foreign keys: - `approval_rule_id` → `merge_requests_approval_rules.id` (cascade on delete) - `user_id` → `users.id` (cascade on delete) - Indexes on sharding keys (`group_id`, `project_id`) - Sharding key validation/exemptions NB, validate these requirements during implementation and adjust as needed. Reference: POC implementation in `poc/v2-approval-rules-complete` branch