fix(2meet-data-optimizer): skip zone deletes on tables that were never created

- TMDO_Zone_Router::delete_post() deleted from wp_wpdo_hot_/cold_{post_type}
  whenever fields were registered for that zone, so every post delete on a
  HivePress site (cold fields registered, module idle, table never created)
  logged a "table doesn't exist" error. Hot and cold deletes now also need
  the table to exist; module state is not checked, so a table left by a
  rolled-back module still loses the rows of deleted posts.
- Live suite zero_side_effect: saving / updating / deleting an hp_listing
  issues no query on missing zone tables (covers PR-054 and this PR).
- Verify: ZoneRouterTest 22 OK; live zero_side_effect + shadow_write +
  serialized 9/9 PASS (old code: zero_side_effect FAIL); unit 687 OK,
  integration 484 OK, phpcs (phpcs.xml) 0, stan OK
- PR: PR-054b

includes/zones/class-tmdo-zone-router.php

@@ -104,7 +104,10 @@ class TMDO_Zone_Router {
 	 *
 	 * Callers only need post_id and post_type; zone enumeration and per-zone
 	 * error isolation are handled here. Hot and Cold are skipped when the
-	 * post_type has no registered fields in that zone (table may not exist).
+	 * post_type has no registered fields in that zone, or when the zone table
+	 * was never created (fields are registered long before a module runs).
+	 * Module state is not checked: a table left by a rolled-back module still
+	 * gets its rows for deleted posts removed.
 	 *
 	 * @param int    $post_id   Post ID being deleted.
 	 * @param string $post_type Post type slug.
@@ -113,7 +116,7 @@ class TMDO_Zone_Router {
 	public static function delete_post( int $post_id, string $post_type ): void {
 		$registry = TMDO_Schema_Registry::instance();
 
-		if ( ! empty( $registry->get_hot_columns( $post_type ) ) ) {
+		if ( ! empty( $registry->get_hot_columns( $post_type ) ) && TMDO_Schema_Manager::table_exists( TMDO_Zone_Hot::table( $post_type ) ) ) {
 			try {
 				TMDO_Zone_Hot::delete( $post_id, $post_type );
 			} catch ( \Throwable $e ) {
@@ -121,7 +124,7 @@ class TMDO_Zone_Router {
 			}
 		}
 
-		if ( ! empty( $registry->get_cold_meta_keys( $post_type ) ) ) {
+		if ( ! empty( $registry->get_cold_meta_keys( $post_type ) ) && TMDO_Schema_Manager::table_exists( TMDO_Zone_Cold::table( $post_type ) ) ) {
 			try {
 				TMDO_Zone_Cold::delete( $post_id, $post_type );
 			} catch ( \Throwable $e ) {