Added index on ready_at

ref https://github.com/TryGhost/Ghost/pull/27190/changes/BASE..fd1320b85be376957b0ea805a6ba7725153ef254#r3053512515

Author: EvanHahn

ghost/core/core/server/data/migrations/versions/6.28/2026-04-08-13-21-16-add-welcome-email-automation-runs-table.js

@@ -15,7 +15,10 @@ const welcomeEmailAutomationRunsSpec = {
     step_attempts: {type: 'integer', unsigned: true, nullable: false, defaultTo: 0},
     exit_reason: {type: 'string', maxlength: 50, nullable: true, validations: {isIn: [['member not found', 'email send failed', 'member unsubscribed', 'member changed status', 'finished']]}},
     created_at: {type: 'dateTime', nullable: false},
-    updated_at: {type: 'dateTime', nullable: true}
+    updated_at: {type: 'dateTime', nullable: true},
+    '@@INDEXES@@': [
+        ['ready_at']
+    ]
 };
 
 module.exports = addTable('welcome_email_automation_runs', welcomeEmailAutomationRunsSpec);

ghost/core/core/server/data/schema/schema.js

@@ -1199,7 +1199,10 @@ module.exports = {
         step_attempts: {type: 'integer', unsigned: true, nullable: false, defaultTo: 0},
         exit_reason: {type: 'string', maxlength: 50, nullable: true, validations: {isIn: [['member not found', 'email send failed', 'member unsubscribed', 'member changed status', 'finished']]}},
         created_at: {type: 'dateTime', nullable: false},
-        updated_at: {type: 'dateTime', nullable: true}
+        updated_at: {type: 'dateTime', nullable: true},
+        '@@INDEXES@@': [
+            ['ready_at']
+        ]
     },
     automated_email_recipients: {
         id: {type: 'string', maxlength: 24, nullable: false, primary: true},

ghost/core/test/unit/server/data/schema/integrity.test.js

@@ -35,7 +35,7 @@ const validateRouteSettings = require('../../../../../core/server/services/route
  */
 describe('DB version integrity', function () {
     // Only these variables should need updating
-    const currentSchemaHash = '5dc658325924440e0f6896036044d34b';
+    const currentSchemaHash = '53f43c438d52059db1c7ced7fc5f957d';
     const currentFixturesHash = '2f86ab1e3820e86465f9ad738dd0ee93';
     const currentSettingsHash = 'a102b80d2ab0cd92325ed007c94d7da6';
     const currentRoutesHash = '3d180d52c663d173a6be791ef411ed01';