feat(cloud): unlimited seats (#166)

* feat: add unlimitedSeats to subscription

* feat: set unlimited seats to true for pro plans

* feat: add unlimited invites messaging

* feat: upgrade to pro via auth client

* feat: add subscription repo funcs

* chore: move subscription utils to shared

* feat: skip updating subscription if unlimited seats

packages/db/migrations/meta/_journal.json

@@ -71,6 +71,13 @@
       "when": 1756803246096,
       "tag": "20250902085406_AddSubscriptions",
       "breakpoints": true
+    },
+    {
+      "idx": 10,
+      "version": "7",
+      "when": 1757271312974,
+      "tag": "20250907185512_AddUnlimitedSeatsToSubscription",
+      "breakpoints": true
     }
   ]
 }