fix: fan out receipts and align tenant schema

docs/sql/IM-隐私设置邀我入群验证SQL.sql

@@ -1,14 +1,34 @@
 -- Add personal privacy switch for requiring approval when others invite the user into a group.
 -- Default is off to preserve existing behavior.
+-- Run this for every tenant business database. The current test environment uses:
+--   default -> tinode
+--   system  -> meeting_im
 
+SET @im_schema = 'tinode';
 SET @im_sql = (
   SELECT IF(
     COUNT(*) = 0,
-    'ALTER TABLE tinode.im_user_privacy_settings ADD COLUMN group_invite_verification TINYINT NOT NULL DEFAULT 0 AFTER read_receipts',
+    CONCAT('ALTER TABLE ', @im_schema, '.im_user_privacy_settings ADD COLUMN group_invite_verification TINYINT NOT NULL DEFAULT 0 AFTER read_receipts'),
     'SELECT 1'
   )
   FROM information_schema.columns
-  WHERE table_schema = 'tinode'
+  WHERE table_schema = @im_schema
+    AND table_name = 'im_user_privacy_settings'
+    AND column_name = 'group_invite_verification'
+);
+PREPARE im_stmt FROM @im_sql;
+EXECUTE im_stmt;
+DEALLOCATE PREPARE im_stmt;
+
+SET @im_schema = 'meeting_im';
+SET @im_sql = (
+  SELECT IF(
+    COUNT(*) = 0,
+    CONCAT('ALTER TABLE ', @im_schema, '.im_user_privacy_settings ADD COLUMN group_invite_verification TINYINT NOT NULL DEFAULT 0 AFTER read_receipts'),
+    'SELECT 1'
+  )
+  FROM information_schema.columns
+  WHERE table_schema = @im_schema
     AND table_name = 'im_user_privacy_settings'
     AND column_name = 'group_invite_verification'
 );