Add rank to reference

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/coredata/migrations/20251028T152339Z.sql

@@ -0,0 +1,19 @@
+ALTER TABLE trust_center_references ADD COLUMN rank INTEGER;
+
+WITH ranked_references AS (
+    SELECT
+        id,
+        ROW_NUMBER() OVER (PARTITION BY trust_center_id ORDER BY created_at DESC, id DESC) AS rn
+    FROM trust_center_references
+)
+UPDATE trust_center_references tcr
+SET rank = rr.rn
+FROM ranked_references rr
+WHERE tcr.id = rr.id;
+
+ALTER TABLE trust_center_references ALTER COLUMN rank SET NOT NULL;
+
+ALTER TABLE trust_center_references
+ADD CONSTRAINT trust_center_references_trust_center_id_rank_key
+    UNIQUE (trust_center_id, rank)
+    DEFERRABLE INITIALLY DEFERRED;