feat(2meet-data-optimizer): store post_status and post_date copies in post entity tables

- TMDO_Post_Status_Sync: post group tables get post_status / post_date
  columns (posts' collation) and an (post_status, post_date) index.
  Brand-new empty tables get them on creation; existing tables only via
  `wp tmdo post-status-sync [--dry-run] [--batch]`, never as DDL on a
  populated table in a web request. Per-group state in
  tmdo_post_status_columns ('columns' | 'ready').
- transition_post_status refreshes the copies; Hook Bus upserts that
  create a post row fill them in (existing rows keep theirs).
- Bench (1M rows): add columns 0.05 s, index 5.3 s, batched backfill 32 s,
  0 mismatches afterwards.
- Verify: core unit 659 / integration 466 green, phpcs clean
- PR: PR-028

includes/engine/class-tmdo-hook-bus.php

@@ -328,15 +328,20 @@ final class TMDO_Hook_Bus {
 
 		try {
 			// 單一 upsert，避免 SELECT→UPDATE/INSERT 的 read-modify-write race。
+			// post：新列一併帶入 post_status / post_date 副本（只在 insert 時寫入）。
+			$extra  = 'post' === $type ? TMDO_Post_Status_Sync::insert_columns( $entity_id, $group ) : array();
 			$result = TMDO_DB::upsert(
 				$table,
-				array(
-					$id_col => $entity_id,
-					$col    => $db_value,
+				array_merge(
+					array(
+						$id_col => $entity_id,
+						$col    => $db_value,
+					),
+					$extra
 				),
 				array( $col ),
 				$id_col,
-				array( '%d', $format )
+				array_merge( array( '%d', $format ), array_fill( 0, count( $extra ), '%s' ) )
 			);
 
 			// 清除快取