chore(2meet-data-optimizer): address the 2.1 audit notes

- The four public REST routes say why they are public (viewable posts only, show_in_rest fields only, per_page cap, one view per IP per post per hour).
- Admin ternary echoes of literal strings are escaped for their context: esc_attr() in attributes, esc_html() for text; the object-cache badge is an if/else and aria-current is always printed ("false" off the current tab).
- Exceptions in the migration engine and the health cron go to TMDO_Logger instead of error_log().
- Verify: audit greps (ternary echoes 23 → 0, error_log outside the logger 0); dev36 renders 8 admin tabs with the change, no PHP notice, one aria-current="page" each.
- PR: PR-078

includes/engine/class-tmdo-entity-migration-engine.php

@@ -144,13 +144,14 @@ final class TMDO_Entity_Migration_Engine {
 					}
 				} catch ( \Throwable $e ) {
 					++$stats['errors'];
-					error_log(
-						sprintf(
-							'[UAE Migration] Error %s/%s ID=%d: %s',
-							$entity_type,
-							$group_name,
-							$entity_id,
-							$e->getMessage()
+					TMDO_Logger::error(
+						'migration_engine',
+						'migrate_group',
+						$e->getMessage(),
+						array(
+							'entity_type' => $entity_type,
+							'group'       => $group_name,
+							'entity_id'   => $entity_id,
 						)
 					);
 				}
@@ -383,7 +384,16 @@ final class TMDO_Entity_Migration_Engine {
 					++$batch_migrated;
 				}
 			} catch ( \Throwable $e ) {
-				error_log( sprintf( '[UAE Migration Batch] Error %s/%s ID=%d: %s', $entity_type, $group_name, $entity_id, $e->getMessage() ) );
+				TMDO_Logger::error(
+					'migration_engine',
+					'migrate_group_batch',
+					$e->getMessage(),
+					array(
+						'entity_type' => $entity_type,
+						'group'       => $group_name,
+						'entity_id'   => $entity_id,
+					)
+				);
 			}
 			$last_id = $entity_id;
 		}