chore: push notification test

database/migrations/add_push_notifications_to_users.sql

@@ -0,0 +1,23 @@
+-- Add web push notification fields to users table
+ALTER TABLE users
+ADD COLUMN push_tokens JSONB DEFAULT NULL,
+ADD COLUMN push_notifications_enabled BOOLEAN DEFAULT true,
+ADD COLUMN last_push_notification_at TIMESTAMPTZ DEFAULT NULL;
+
+-- Add indexes for better performance
+CREATE INDEX IF NOT EXISTS idx_users_push_notifications_enabled ON users (push_notifications_enabled)
+WHERE
+    push_notifications_enabled = true
+    AND deleted_at IS NULL;
+
+CREATE INDEX IF NOT EXISTS idx_users_push_tokens ON users USING GIN (push_tokens)
+WHERE
+    push_tokens IS NOT NULL
+    AND deleted_at IS NULL;
+
+-- Add comment for documentation
+COMMENT ON COLUMN users.push_tokens IS 'JSON array of web push subscription objects containing endpoint and keys';
+
+COMMENT ON COLUMN users.push_notifications_enabled IS 'Whether web push notifications are enabled for this user';
+
+COMMENT ON COLUMN users.last_push_notification_at IS 'Timestamp of the last push notification sent to this user';