fix(2meet-data-optimizer): keep searches native while a group is known to drift

- The post query router routes no clause of a group whose last drift-check recorded miss / diff / extra; all or nothing, so such a query stays fully native. A group never checked keeps routing (decision 2026-09-27: no slowdown after upgrading; PR-073 samples daily).
- The check sits in route_clause(), which every routed clause, HivePress sort shape and meta_key sort goes through.
- Verify: PostQueryRouterDriftTest (drifting group and drifting sort key RED before); dev36 hp_listing price search in shadow_read: clean → flat, drift → native, unchecked → flat, found 90347 each.
- PR: PR-072

includes/query/class-tmdo-post-query-router.php

@@ -523,9 +523,23 @@ class TMDO_Post_Query_Router {
 		return false;
 	}
 
+	/**
+	 * The last `wp tmdo drift-check` found the group out of step with native
+	 * meta. A group never checked keeps routing.
+	 *
+	 * @param string $group Entity group name.
+	 * @return bool
+	 */
+	private static function drifting( string $group ): bool {
+		$status = get_option( TMDO_Drift_Check::OPTION, array() );
+		$last   = is_array( $status ) ? ( $status['post'][ $group ] ?? null ) : null;
+		return is_array( $last ) && (int) ( $last['miss'] ?? 0 ) + (int) ( $last['diff'] ?? 0 ) + (int) ( $last['extra'] ?? 0 ) > 0;
+	}
+
 	/**
 	 * The routed form of a clause, or null when the flat column would not
-	 * compare the way WordPress compares the meta_value string.
+	 * compare the way WordPress compares the meta_value string, or when the
+	 * group is known to drift from native meta.
 	 *
 	 * Native casts meta_value by the clause type (CHAR when absent); flat
 	 * columns are typed. Routed: EXISTS / NOT EXISTS; string columns with
@@ -560,7 +574,7 @@ class TMDO_Post_Query_Router {
 				&& in_array( $compare, array( '=', '!=', '<>', 'IN', 'NOT IN' ), true )
 				&& array() === array_filter( (array) $value, static fn( $v ) => ! is_scalar( $v ) || (string) (int) $v !== (string) $v );
 		}
-		if ( ! $ok ) {
+		if ( ! $ok || self::drifting( (string) $field['group'] ) ) {
 			return null;
 		}
 

tests/bootstrap.php

@@ -622,6 +622,7 @@ require_once TMDO_PATH . 'includes/engine/class-tmdo-query-compiler.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-schema-manager.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-registry.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-migration-engine.php';
+require_once TMDO_PATH . 'includes/diagnostic/class-tmdo-drift-check.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-health.php';
 require_once TMDO_PATH . 'includes/adapters/interface-entity-adapter.php';
 require_once TMDO_PATH . 'includes/adapters/class-tmdo-adapter-post.php';

tests/integration/PostQueryRouterDriftTest.php

@@ -0,0 +1,115 @@
+<?php
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * The post query router leaves a query native while the last drift-check
+ * found a routed clause's group out of step with native meta (2.2 PR-072).
+ * All or nothing: one drifting group keeps the whole query native. A group
+ * never checked keeps routing (decision 2026-09-27).
+ */
+class PostQueryRouterDriftTest extends TestCase {
+
+	public static function setUpBeforeClass(): void {
+		WPDO_Entity_Registry::init();
+		WPDO_Entity_Registry::register_adapter( 'post', new WPDO_Adapter_Post() );
+		WPDO_Post_Fields::register_entity_fields();
+	}
+
+	public static function tearDownAfterClass(): void {
+		self::set_modes( null );
+		WPDO_Entity_Registry::init();
+	}
+
+	protected function setUp(): void {
+		$GLOBALS['_wp_options'] = array();
+		self::set_modes(
+			array(
+				'post'    => 'shadow_read',
+				'user'    => 'disabled',
+				'term'    => 'disabled',
+				'comment' => 'disabled',
+			)
+		);
+	}
+
+	private static function set_modes( ?array $modes ): void {
+		$cache = ( new ReflectionClass( WPDO_Mode_Manager::class ) )->getProperty( 'cache' );
+		$cache->setAccessible( true );
+		$cache->setValue( null, $modes );
+	}
+
+	private function drift( string $group, int $diff ): void {
+		$GLOBALS['_wp_options'][ TMDO_Drift_Check::OPTION ]['post'][ $group ] = array(
+			'miss'       => 0,
+			'diff'       => $diff,
+			'extra'      => 0,
+			'sample'     => 0,
+			'checked_at' => '2026-09-27 00:00:00',
+		);
+	}
+
+	private function price_query( array $extra = array() ): WP_Query {
+		$query = new WP_Query();
+		foreach ( array(
+			'post_type'  => 'product',
+			'meta_query' => array(
+				array( 'key' => '_price', 'value' => '50', 'compare' => '>=', 'type' => 'NUMERIC' ),
+			),
+		) + $extra as $k => $v ) {
+			$query->set( $k, $v );
+		}
+		return $query;
+	}
+
+	public function test_a_drifting_group_keeps_the_query_native(): void {
+		$this->drift( 'wc_product', 3 );
+		$query    = $this->price_query();
+		$original = $query->get( 'meta_query' );
+
+		( new WPDO_Post_Query_Router() )->pre_get_posts( $query );
+
+		$this->assertSame( $original, $query->get( 'meta_query' ) );
+		$this->assertSame( '', $query->get( 'wpdo_post_clauses' ) );
+	}
+
+	public function test_a_clean_group_is_routed(): void {
+		$this->drift( 'wc_product', 0 );
+		$query = $this->price_query();
+
+		( new WPDO_Post_Query_Router() )->pre_get_posts( $query );
+
+		$this->assertNotEmpty( $query->get( 'wpdo_post_clauses' ) );
+	}
+
+	public function test_a_group_never_checked_is_routed(): void {
+		$query = $this->price_query();
+
+		( new WPDO_Post_Query_Router() )->pre_get_posts( $query );
+
+		$this->assertNotEmpty( $query->get( 'wpdo_post_clauses' ) );
+	}
+
+	public function test_drift_in_another_group_does_not_matter(): void {
+		$this->drift( 'hp_listing_core', 5 );
+		$query = $this->price_query();
+
+		( new WPDO_Post_Query_Router() )->pre_get_posts( $query );
+
+		$this->assertNotEmpty( $query->get( 'wpdo_post_clauses' ) );
+	}
+
+	public function test_sorting_by_a_drifting_key_stays_native(): void {
+		$this->drift( 'wc_product', 1 );
+		$query = new WP_Query();
+		$query->set( 'post_type', 'product' );
+		$query->set( 'meta_key', '_price' );
+		$query->set( 'orderby', 'meta_value_num' );
+
+		( new WPDO_Post_Query_Router() )->pre_get_posts( $query );
+
+		$this->assertSame( '_price', $query->get( 'meta_key' ) );
+		$this->assertSame( '', $query->get( 'wpdo_post_sort' ) );
+	}
+}

tests/integration/bootstrap.php

@@ -586,6 +586,7 @@ require_once TMDO_PATH . 'includes/engine/class-tmdo-query-compiler.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-schema-manager.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-registry.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-migration-engine.php';
+require_once TMDO_PATH . 'includes/diagnostic/class-tmdo-drift-check.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-entity-health.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-auto-promoter.php';
 require_once TMDO_PATH . 'includes/engine/class-tmdo-hook-bus.php';