feat(25-01): add attribution columns and unique constraint to globalItems

- Add sourceUrl, imageCredit, imageSourceUrl nullable columns
- Add unique constraint on (brand, model) pair
- Generate migration 0003_loving_serpent_society.sql

drizzle-pg/meta/_journal.json

@@ -22,6 +22,13 @@
       "when": 1775413526643,
       "tag": "0002_wakeful_vermin",
       "breakpoints": true
+    },
+    {
+      "idx": 3,
+      "version": "7",
+      "when": 1775811339957,
+      "tag": "0003_loving_serpent_society",
+      "breakpoints": true
     }
   ]
 }