Added tag reassociation and dedupe migration.

migrations/20260222055254_unique_origin_tags.js

@@ -0,0 +1,31 @@
+exports.up = async (knex) => {
+	// dedupe
+	await knex.raw(`
+		DELETE
+		FROM releases_tags
+		WHERE ctid IN
+		(
+			SELECT ctid
+			FROM(
+				SELECT
+					*,
+					ctid,
+					row_number() OVER (PARTITION BY release_id, original_tag ORDER BY ctid)
+				FROM releases_tags
+			)s
+			WHERE row_number >= 2
+		)
+	`);
+
+	await knex.schema.alterTable('releases_tags', (table) => {
+		table.increments('id');
+		table.unique(['release_id', 'original_tag']);
+	});
+};
+
+exports.down = async (knex) => {
+	await knex.schema.alterTable('releases_tags', (table) => {
+		table.dropColumn('id');
+		table.dropUnique(['release_id', 'original_tag']);
+	});
+};