diff --git a/includes/class-tmdo-comment-stress-tester.php b/includes/class-tmdo-comment-stress-tester.php
index 65a35b9..f7cb248 100644
--- a/includes/class-tmdo-comment-stress-tester.php
+++ b/includes/class-tmdo-comment-stress-tester.php
@@ -492,7 +492,7 @@ final class TMDO_Comment_Stress_Tester {
 			$state['completed_at'] = time();
 			update_option( self::OPT_STATE, $state, false );
 			if ( class_exists( 'TMDO_Logger' ) ) {
-				TMDO_Logger::error( 'comment_stress_test_batch_failed', array( 'message' => $e->getMessage() ) );
+				TMDO_Logger::error( 'stress_test', 'comment_batch_failed', $e->getMessage() );
 			}
 			return;
 		}
diff --git a/includes/class-tmdo-post-stress-tester.php b/includes/class-tmdo-post-stress-tester.php
index 385ada5..982acb4 100644
--- a/includes/class-tmdo-post-stress-tester.php
+++ b/includes/class-tmdo-post-stress-tester.php
@@ -545,7 +545,7 @@ final class TMDO_Post_Stress_Tester {
 			$state['completed_at'] = time();
 			update_option( self::OPT_STATE, $state, false );
 			if ( class_exists( 'TMDO_Logger' ) ) {
-				TMDO_Logger::error( 'post_stress_test_batch_failed', array( 'message' => $e->getMessage() ) );
+				TMDO_Logger::error( 'stress_test', 'post_batch_failed', $e->getMessage() );
 			}
 			return;
 		}
diff --git a/includes/class-tmdo-term-stress-tester.php b/includes/class-tmdo-term-stress-tester.php
index 4b6c5d0..eb5852d 100644
--- a/includes/class-tmdo-term-stress-tester.php
+++ b/includes/class-tmdo-term-stress-tester.php
@@ -515,7 +515,7 @@ final class TMDO_Term_Stress_Tester {
 			$state['completed_at'] = time();
 			update_option( self::OPT_STATE, $state, false );
 			if ( class_exists( 'TMDO_Logger' ) ) {
-				TMDO_Logger::error( 'term_stress_test_batch_failed', array( 'message' => $e->getMessage() ) );
+				TMDO_Logger::error( 'stress_test', 'term_batch_failed', $e->getMessage() );
 			}
 			return;
 		}
diff --git a/includes/class-tmdo-user-stress-tester.php b/includes/class-tmdo-user-stress-tester.php
index c9f0156..9993e5b 100644
--- a/includes/class-tmdo-user-stress-tester.php
+++ b/includes/class-tmdo-user-stress-tester.php
@@ -403,7 +403,7 @@ final class TMDO_User_Stress_Tester {
 			$state['completed_at'] = time();
 			update_option( self::OPT_STATE, $state, false );
 			if ( class_exists( 'TMDO_Logger' ) ) {
-				TMDO_Logger::error( 'stress_test_batch_failed', array( 'message' => $e->getMessage() ) );
+				TMDO_Logger::error( 'stress_test', 'user_batch_failed', $e->getMessage() );
 			}
 			return;
 		}
diff --git a/includes/engine/class-tmdo-auto-promoter.php b/includes/engine/class-tmdo-auto-promoter.php
index c3a23e8..1971bbb 100644
--- a/includes/engine/class-tmdo-auto-promoter.php
+++ b/includes/engine/class-tmdo-auto-promoter.php
@@ -108,11 +108,10 @@ final class TMDO_Auto_Promoter {
 		$result = TMDO_Mode_Manager::set( $type, TMDO_Mode_Manager::MODE_AEAV_ONLY );
 		if ( is_wp_error( $result ) ) {
 			TMDO_Logger::error(
+				'auto_promoter',
 				'auto_promote_failed',
-				array(
-					'entity_type' => $type,
-					'error'       => $result->get_error_message(),
-				)
+				$result->get_error_message(),
+				array( 'entity_type' => $type )
 			);
 			return 'error';
 		}
diff --git a/includes/engine/class-tmdo-conflict-detector.php b/includes/engine/class-tmdo-conflict-detector.php
index 74a70ec..0a13aba 100644
--- a/includes/engine/class-tmdo-conflict-detector.php
+++ b/includes/engine/class-tmdo-conflict-detector.php
@@ -76,11 +76,10 @@ final class TMDO_Conflict_Detector {
 
 		if ( $conflicts ) {
 			TMDO_Logger::error(
+				'schema_registry',
 				'field_registration_conflict',
-				array(
-					'count'  => count( $conflicts ),
-					'fields' => $conflicts,
-				)
+				sprintf( 'Field registration conflict: %d field(s) affected', count( $conflicts ) ),
+				$conflicts
 			);
 		}
 
diff --git a/includes/engine/class-tmdo-hook-bus.php b/includes/engine/class-tmdo-hook-bus.php
index 8638542..7d20802 100644
--- a/includes/engine/class-tmdo-hook-bus.php
+++ b/includes/engine/class-tmdo-hook-bus.php
@@ -418,12 +418,7 @@ final class TMDO_Hook_Bus {
 				);
 			} catch ( \Throwable $e ) {
 				// 比對失敗不該影響讀取
-				TMDO_Logger::error(
-					'shadow_compare_exception',
-					array(
-						'error' => $e->getMessage(),
-					)
-				);
+				TMDO_Logger::error( 'entity_bridge', 'shadow_compare_exception', $e->getMessage() );
 			}
 		}
 
@@ -525,23 +520,39 @@ final class TMDO_Hook_Bus {
 		$default = $field_def['default'] ?? null;
 
 		if ( $delete_all ) {
-			// Safety cap: refuse mass-null if affected row count exceeds threshold.
-			// phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.PreparedSQL.InterpolatedNotPrepared
-			$row_count = (int) $wpdb->get_var( "SELECT COUNT(*) FROM `{$table}`" );
+			/**
+			 * Opt-in gate for mass column clear (delete_all=true).
+			 *
+			 * Defaults to false — a single mistargetted call NULLs the column for
+			 * every entity, and the previous row-count heuristic let small sites
+			 * (< 500 rows) through unguarded. Enable only in controlled contexts:
+			 *   add_filter( 'wpdo_allow_mass_column_clear', '__return_true' );
+			 *
+			 * @param bool   $allow    Whether to allow the mass clear. Default false.
+			 * @param string $table    Flat table name.
+			 * @param string $col      Column being cleared.
+			 * @param string $meta_key Original meta key.
+			 */
+			$allowed = (bool) apply_filters( 'wpdo_allow_mass_column_clear', false, $table, $col, $meta_key );
+			/** This filter is documented above (tmdo_* is the forward-looking name). */
+			$allowed = (bool) apply_filters( 'tmdo_allow_mass_column_clear', $allowed, $table, $col, $meta_key );
 
-			if ( $row_count > 500 ) {
+			if ( ! $allowed ) {
 				TMDO_Logger::warning(
 					'intercept_delete_mass_blocked',
 					array(
-						'table' => $table,
-						'col'   => $col,
-						'rows'  => $row_count,
+						'table'  => $table,
+						'col'    => $col,
+						'reason' => 'enable via wpdo_allow_mass_column_clear filter',
 					)
 				);
 				return false;
 			}
 
-			TMDO_Logger::info(
+			// phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.PreparedSQL.InterpolatedNotPrepared
+			$row_count = (int) $wpdb->get_var( "SELECT COUNT(*) FROM `{$table}`" );
+
+			TMDO_Logger::warning(
 				'intercept_delete_all',
 				array(
 					'table' => $table,