feat(captain): align preferences payloads

migrations/000025_add_account_captain_preferences.down.sql

@@ -0,0 +1,3 @@
+ALTER TABLE accounts
+    DROP COLUMN IF EXISTS captain_features,
+    DROP COLUMN IF EXISTS captain_models;

migrations/000025_add_account_captain_preferences.up.sql

@@ -0,0 +1,5 @@
+-- Chatwoot stores Captain model/feature preferences in account settings.
+
+ALTER TABLE accounts
+    ADD COLUMN IF NOT EXISTS captain_models JSONB NOT NULL DEFAULT '{}',
+    ADD COLUMN IF NOT EXISTS captain_features JSONB NOT NULL DEFAULT '{}';