add unique index to prevent multiple orgs per user

packages/db/migrations/0136_pretty_jack_flag.sql

@@ -0,0 +1,2 @@
+DROP INDEX "member_user_id_idx";--> statement-breakpoint
+CREATE UNIQUE INDEX "member_user_id_unique" ON "member" USING btree ("user_id");

packages/db/migrations/meta/_journal.json

@@ -946,6 +946,13 @@
       "when": 1767737974016,
       "tag": "0135_stormy_puff_adder",
       "breakpoints": true
+    },
+    {
+      "idx": 136,
+      "version": "7",
+      "when": 1767905804764,
+      "tag": "0136_pretty_jack_flag",
+      "breakpoints": true
     }
   ]
 }

packages/db/schema.ts

@@ -824,7 +824,7 @@ export const member = pgTable(
     createdAt: timestamp('created_at').defaultNow().notNull(),
   },
   (table) => ({
-    userIdIdx: index('member_user_id_idx').on(table.userId),
+    userIdUnique: uniqueIndex('member_user_id_unique').on(table.userId), // Users can only belong to one org
     organizationIdIdx: index('member_organization_id_idx').on(table.organizationId),
   })
 )