chore: initial snapshot of 2meet-data-optimizer-woocommerce-addon v0.1.0

Baseline before backporting wp-data-optimizer v3.0.1-v3.4.6.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TbG1keQQ7XBa7qMQY16KCY

includes/class-tmdo-wc-orders-interceptor.php

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+<?php
+/**
+ * TMDO_WC_Orders_Interceptor — vendor commission tracking for WC marketplaces.
+ *
+ * V2.1.0 rewrite: replaces legacy `hpct_wc_orders` write path with own
+ * `wp_wpdo_wc_commissions` table. HPOS-aware (uses `wc_get_order()`).
+ *
+ * Trigger: `woocommerce_order_status_changed` → on `processing`/`completed`
+ *          read order's vendor meta (`_hp_vendor`, `_hp_commission`, etc.)
+ *          and INSERT/UPDATE `wp_wpdo_wc_commissions`.
+ *
+ * Reads from order via `wc_get_order()` — works for both HPOS and legacy.
+ *
+ * @package WP_Data_Optimizer
+ * @since   1.0.0  (legacy hpct_wc_orders write path)
+ * @since   2.1.0  (wp_wpdo_wc_commissions custom table; HPOS-aware)
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * WC Orders interceptor — modern v2 model.
+ *
+ * Operates on `wp_wpdo_wc_commissions` (own custom table). HPCT legacy code removed.
+ */
+class TMDO_WC_Orders_Interceptor extends TMDO_Interceptor_Base {
+
+	/**
+	 * Module identifier.
+	 *
+	 * @var string
+	 */
+	protected string $module = 'wc_orders';
+
+	/**
+	 * Order statuses that trigger commission recording.
+	 *
+	 * @var array<string>
+	 */
+	private const TRACKED_STATUSES = array( 'completed', 'processing' );
+
+	/**
+	 * Registers WordPress hooks for this interceptor.
+	 *
+	 * @return void
+	 */
+	public function register_hooks(): void {
+		add_action( 'woocommerce_order_status_changed', array( $this, 'action_order_status_changed' ), 10, 3 );
+	}
+
+	/**
+	 * Sync order data when WC status changes to a tracked state.
+	 *
+	 * @param int    $order_id   Order ID.
+	 * @param string $old_status Old status (unused).
+	 * @param string $new_status New status.
+	 * @return void
+	 */
+	public function action_order_status_changed( int $order_id, string $old_status, string $new_status ): void { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.FoundAfterLastUsed
+		if ( ! $this->is_active() ) {
+			return;
+		}
+		if ( ! in_array( $new_status, self::TRACKED_STATUSES, true ) ) {
+			return;
+		}
+
+		try {
+			$this->sync_commission( $order_id, $new_status );
+		} catch ( \Throwable $e ) {
+			TMDO_Logger::error( $this->module, 'woocommerce_order_status_changed', $e->getMessage() );
+		}
+	}
+
+	/**
+	 * INSERT/UPDATE wp_wpdo_wc_commissions for the given order.
+	 *
+	 * Skips orders without a `_hp_vendor` meta — only marketplace orders count.
+	 *
+	 * @param int    $wc_order_id WooCommerce order ID.
+	 * @param string $status      Order status.
+	 * @return void
+	 */
+	private function sync_commission( int $wc_order_id, string $status ): void {
+		if ( ! function_exists( 'wc_get_order' ) ) {
+			return;
+		}
+		$order = wc_get_order( $wc_order_id );
+		if ( ! $order ) {
+			return;
+		}
+
+		$vendor_id = (int) $order->get_meta( '_hp_vendor' );
+		if ( $vendor_id <= 0 ) {
+			// Not a marketplace order — skip.
+			return;
+		}
+
+		$listing_id      = (int) $order->get_meta( '_hp_listing' );
+		$subtotal        = (float) ( $order->get_meta( '_hp_subtotal' ) ?: 0 );
+		$commission      = (float) ( $order->get_meta( '_hp_commission' ) ?: 0 );
+		$vendor_payout   = (float) ( $order->get_meta( '_hp_vendor_payout' ) ?: 0 );
+		$commission_rate = (float) ( $order->get_meta( '_hp_commission_rate' ) ?: 0 );
+		$hpos_enabled    = class_exists( 'TMDO_WooCommerce' ) && TMDO_WooCommerce::is_hpos_enabled() ? 1 : 0;
+
+		$table = TMDO_DB::table( 'wpdo_wc_commissions' );
+		$now   = TMDO_DB::now();
+
+		// v2.1.2 race-condition fix: atomic upsert via UNIQUE KEY ui_order_vendor.
+		// Replaces SELECT-then-INSERT/UPDATE which could race two concurrent
+		// status-change events (e.g. gateway IPN + admin click) and trigger
+		// duplicate-key DB errors. Single round-trip; on conflict only updates
+		// the mutable columns (status / updated_at), preserves financials.
+		TMDO_DB::upsert(
+			$table,
+			array(
+				'wc_order_id'     => $wc_order_id,
+				'vendor_id'       => $vendor_id,
+				'listing_id'      => $listing_id,
+				'subtotal'        => $subtotal,
+				'commission'      => $commission,
+				'vendor_payout'   => $vendor_payout,
+				'commission_rate' => $commission_rate,
+				'status'          => $status,
+				'hpos_enabled'    => $hpos_enabled,
+				'created_at'      => $now,
+				'updated_at'      => $now,
+			),
+			array( 'status', 'updated_at' ), // columns to update on conflict.
+			array( 'wc_order_id', 'vendor_id' ), // composite unique key.
+			array( '%d', '%d', '%d', '%f', '%f', '%f', '%f', '%s', '%d', '%s', '%s' )
+		);
+	}
+
+	/**
+	 * Aggregate commission summary for a vendor.
+	 *
+	 * @param int    $vendor_id Vendor user ID.
+	 * @param string $status    Optional status filter ('processing' / 'completed' / 'all').
+	 * @return array{total_subtotal:float, total_commission:float, total_payout:float, order_count:int}
+	 */
+	public static function vendor_summary( int $vendor_id, string $status = 'all' ): array {
+		global $wpdb;
+		$table = TMDO_DB::table( 'wpdo_wc_commissions' );
+
+		$where = $wpdb->prepare( ' WHERE vendor_id = %d ', $vendor_id );
+		if ( 'all' !== $status ) {
+			$where .= $wpdb->prepare( ' AND status = %s ', $status );
+		}
+
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQL.NotPrepared -- {$table} via TMDO_DB::table(); {$where} is a pre-validated SQL fragment.
+		$row = $wpdb->get_row(
+			"SELECT
+				SUM(subtotal)      AS total_subtotal,
+				SUM(commission)    AS total_commission,
+				SUM(vendor_payout) AS total_payout,
+				COUNT(*)           AS order_count
+			 FROM `{$table}` {$where}", // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- {$table} via TMDO_DB::table(); {$where} is a pre-validated SQL fragment.
+			ARRAY_A
+		);
+
+		return array(
+			'total_subtotal'   => (float) ( $row['total_subtotal'] ?? 0 ),
+			'total_commission' => (float) ( $row['total_commission'] ?? 0 ),
+			'total_payout'     => (float) ( $row['total_payout'] ?? 0 ),
+			'order_count'      => (int) ( $row['order_count'] ?? 0 ),
+		);
+	}
+}

includes/class-tmdo-wc-term-count-filter.php

@@ -0,0 +1,236 @@
+<?php
+// phpcs:ignore WPDO.AntiEAV -- platform integration with WooCommerce: term count cache transform
+/**
+ * TMDO_WC_Term_Count_Filter — Reroute WooCommerce term count cache from
+ * wp_termmeta to wp_options (v2.12.3 Phase 3).
+ *
+ * Background
+ * ----------
+ * WooCommerce caches the number of products per term as a wp_termmeta row:
+ *
+ *   wp_termmeta(term_id=5, meta_key='product_count_product_cat', meta_value='42')
+ *
+ * Each `product_count_<taxonomy>` row is a transient-like cache — WC
+ * recalculates and writes whenever a product is added/removed from a term.
+ * Pattern is identical to HivePress's per-post TTL cache anti-pattern that
+ * v2.11.5 solved: the data is genuine cache, but storage location is wrong.
+ *
+ * Strategy
+ * --------
+ * Mirror v2.11.5 `TMDO_Hivepress_Transient_Filter`. Intercept term metadata
+ * writes/reads where meta_key starts with `product_count_` and route to
+ * wp_options as native transient (no per-key TTL — WC manages its own
+ * invalidation; we just provide indistinguishable storage).
+ *
+ * Translation key:
+ *   wp_options('_transient_wpdo_wc_termcount_<term_id>_<md5(meta_key)>')
+ *
+ * Namespacing by term_id keeps caches scoped to the right term; md5 of the
+ * meta_key handles arbitrary-length taxonomy slugs (`product_count_my_long_taxonomy_with_many_chars`).
+ *
+ * Default: enabled. Toggle: `wpdo_wc_term_count_filter_enabled` option.
+ *
+ * 🔒 Lessons applied (v2.11.7): added to TMDO_Hook_Bus_Bridge::COEXIST_WHITELIST
+ * so `wp wpdo conflict-scan` does not report a false positive.
+ *
+ * @package WP_Data_Optimizer
+ * @since   2.12.3
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * Routes WooCommerce term count cache out of wp_termmeta into wp_options.
+ */
+final class TMDO_WC_Term_Count_Filter {
+
+	/** Option toggle key. */
+	public const OPT_ENABLED = 'wpdo_wc_term_count_filter_enabled';
+
+	/** Prefix that identifies a WooCommerce term count cache row. */
+	public const PREFIX = 'product_count_';
+
+	/** Namespace prefix for translated wp_options entries. */
+	public const TRANSLATED_NAMESPACE = 'wpdo_wc_termcount_';
+
+	/**
+	 * Register the four metadata filters on `init` priority 5.
+	 * Idempotent — safe to call multiple times.
+	 *
+	 * @return void
+	 */
+	public static function init(): void {
+		if ( ! self::is_enabled() ) {
+			return;
+		}
+
+		// Filter priority 9 (before Hook Bus at 10), same as HivePress filter.
+		add_filter( 'get_term_metadata', array( self::class, 'on_read' ), 9, 4 );
+		add_filter( 'add_term_metadata', array( self::class, 'on_add' ), 9, 5 );
+		add_filter( 'update_term_metadata', array( self::class, 'on_update' ), 9, 5 );
+		add_filter( 'delete_term_metadata', array( self::class, 'on_delete' ), 9, 5 );
+	}
+
+	/**
+	 * Check the admin toggle. Defaults to enabled.
+	 *
+	 * @return bool
+	 */
+	public static function is_enabled(): bool {
+		return (bool) get_option( self::OPT_ENABLED, '1' );
+	}
+
+	/**
+	 * Test whether a meta_key is a WC term count cache row.
+	 *
+	 * @param mixed $meta_key Candidate meta_key.
+	 * @return bool
+	 */
+	public static function is_target_key( $meta_key ): bool {
+		return is_string( $meta_key ) && str_starts_with( $meta_key, self::PREFIX );
+	}
+
+	/**
+	 * Translate (term_id, meta_key) → namespaced wp_options option_name root.
+	 *
+	 * @param int    $term_id  Term ID.
+	 * @param string $meta_key Original `product_count_*` meta_key.
+	 * @return string Translated option_name root (without `_transient_` prefix).
+	 */
+	public static function translate_key( int $term_id, string $meta_key ): string {
+		return self::TRANSLATED_NAMESPACE . $term_id . '_' . md5( $meta_key );
+	}
+
+	/**
+	 * Filter callback: get_term_metadata.
+	 *
+	 * @param mixed  $pre        Filter accumulator (null at our priority).
+	 * @param int    $object_id  Term ID.
+	 * @param string $meta_key   Meta key being read.
+	 * @param bool   $single     Whether single value was requested.
+	 * @return mixed
+	 */
+	public static function on_read( $pre, $object_id, $meta_key, $single ) {
+		unset( $single );
+		if ( ! self::is_target_key( $meta_key ) ) {
+			return $pre;
+		}
+		$translated  = self::translate_key( (int) $object_id, (string) $meta_key );
+		$option_name = '_transient_' . $translated;
+		$value       = get_option( $option_name, null );
+
+		if ( null === $value ) {
+			// Cache miss — fall through to wp_termmeta (back-compat).
+			return $pre;
+		}
+
+		// WP unwraps [0] for single=true callers; return array of values.
+		return array( $value );
+	}
+
+	/**
+	 * Filter callback: add_term_metadata.
+	 *
+	 * @param mixed  $check      Filter accumulator (null at our priority).
+	 * @param int    $object_id  Term ID.
+	 * @param string $meta_key   Meta key being written.
+	 * @param mixed  $meta_value Value being written.
+	 * @param bool   $unique     Whether the unique flag was set (unused).
+	 * @return mixed
+	 */
+	public static function on_add( $check, $object_id, $meta_key, $meta_value, $unique ) {
+		unset( $unique );
+		if ( ! self::is_target_key( $meta_key ) ) {
+			return $check;
+		}
+		self::write_translated( (int) $object_id, (string) $meta_key, $meta_value );
+		return true;
+	}
+
+	/**
+	 * Filter callback: update_term_metadata.
+	 *
+	 * @param mixed  $check      Filter accumulator (null at our priority).
+	 * @param int    $object_id  Term ID.
+	 * @param string $meta_key   Meta key being written.
+	 * @param mixed  $meta_value Value being written.
+	 * @param mixed  $prev_value Previous value scope (unused).
+	 * @return mixed
+	 */
+	public static function on_update( $check, $object_id, $meta_key, $meta_value, $prev_value ) {
+		unset( $prev_value );
+		if ( ! self::is_target_key( $meta_key ) ) {
+			return $check;
+		}
+		self::write_translated( (int) $object_id, (string) $meta_key, $meta_value );
+		return true;
+	}
+
+	/**
+	 * Filter callback: delete_term_metadata.
+	 *
+	 * @param mixed  $check       Filter accumulator (null at our priority).
+	 * @param int    $object_id   Term ID.
+	 * @param string $meta_key    Meta key being deleted.
+	 * @param mixed  $meta_value  Value-scoped delete (unused).
+	 * @param bool   $delete_all  Whether to delete from all objects (unused).
+	 * @return mixed
+	 */
+	public static function on_delete( $check, $object_id, $meta_key, $meta_value, $delete_all ) {
+		unset( $meta_value, $delete_all );
+		if ( ! self::is_target_key( $meta_key ) ) {
+			return $check;
+		}
+		$translated  = self::translate_key( (int) $object_id, (string) $meta_key );
+		$option_name = '_transient_' . $translated;
+		delete_option( $option_name );
+		return true;
+	}
+
+	/**
+	 * Internal: persist value to wp_options as a no-expiry transient.
+	 *
+	 * `autoload=no` because WC reads on demand only — never via wp_load_alloptions().
+	 *
+	 * @param int    $term_id    Term ID.
+	 * @param string $meta_key   Original `product_count_*` meta_key.
+	 * @param mixed  $meta_value Value to store.
+	 * @return void
+	 */
+	private static function write_translated( int $term_id, string $meta_key, $meta_value ): void {
+		$translated  = self::translate_key( $term_id, $meta_key );
+		$option_name = '_transient_' . $translated;
+		update_option( $option_name, $meta_value, false );
+	}
+
+	/**
+	 * One-time migration helper: count `product_count_*` rows in wp_termmeta.
+	 *
+	 * @return int
+	 */
+	public static function count_legacy_termmeta_rows(): int {
+		global $wpdb;
+		// phpcs:disable WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+		return (int) $wpdb->get_var(
+			"SELECT COUNT(*) FROM {$wpdb->termmeta} WHERE meta_key LIKE 'product\\_count\\_%'"
+		);
+		// phpcs:enable
+	}
+
+	/**
+	 * One-time migration: DELETE all historical `product_count_*` rows from
+	 * wp_termmeta. Future writes auto-route to wp_options.
+	 *
+	 * @return int Rows deleted.
+	 */
+	public static function purge_legacy_termmeta_rows(): int {
+		global $wpdb;
+		// phpcs:disable WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+		return (int) $wpdb->query(
+			"DELETE FROM {$wpdb->termmeta} WHERE meta_key LIKE 'product\\_count\\_%'"
+		);
+		// phpcs:enable
+	}
+}

includes/class-tmdo-woocommerce-bootstrap.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * Bootstrap for 2meet Data Optimizer WooCommerce AddOn.
+ *
+ * @package TMDO_WOOCOMMERCE
+ * @since   0.1.0
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+final class TMDO_Woocommerce_Bootstrap {
+
+	public static function init(): void {
+		if ( ! class_exists( 'TMDO_API' ) && ! class_exists( 'WPDO_API' ) ) {
+			add_action( 'admin_notices', array( __CLASS__, 'missing_core_notice' ) );
+			return;
+		}
+
+		load_plugin_textdomain(
+			'tmdo-woocommerce',
+			false,
+			dirname( plugin_basename( TMDO_WOOCOMMERCE_FILE ) ) . '/languages'
+		);
+
+		// 載入 4 個 WC 整合檔案
+		require_once TMDO_WOOCOMMERCE_PATH . 'includes/class-tmdo-woocommerce.php';
+		require_once TMDO_WOOCOMMERCE_PATH . 'includes/class-tmdo-wc-term-count-filter.php';
+		require_once TMDO_WOOCOMMERCE_PATH . 'includes/class-tmdo-wc-orders-interceptor.php';
+
+		if ( is_admin() ) {
+			require_once TMDO_WOOCOMMERCE_PATH . 'admin/class-tmdo-admin-wc.php';
+			if ( class_exists( 'TMDO_Admin_WC' ) && method_exists( 'TMDO_Admin_WC', 'register' ) ) {
+				add_action( 'plugins_loaded', array( 'TMDO_Admin_WC', 'register' ), 30 );
+			}
+		}
+
+		// WPDO_WooCommerce::register() 會掛 wpdo_register_fields / custom_tables / entity_fields
+		if ( class_exists( 'TMDO_WooCommerce' ) && method_exists( 'TMDO_WooCommerce', 'register' ) ) {
+			TMDO_WooCommerce::register();
+		}
+
+		// WC orders commission interceptor
+		if ( class_exists( 'TMDO_WooCommerce' )
+			&& TMDO_WooCommerce::is_active()
+			&& class_exists( 'TMDO_WC_Orders_Interceptor' ) ) {
+			( new TMDO_WC_Orders_Interceptor() )->register_hooks();
+		}
+
+		// WC term count filter
+		if ( class_exists( 'TMDO_WC_Term_Count_Filter' ) ) {
+			add_action( 'init', array( 'TMDO_WC_Term_Count_Filter', 'init' ), 5 );
+		}
+	}
+
+	public static function missing_core_notice(): void {
+		echo '<div class="notice notice-error"><p>';
+		echo esc_html__( '2meet Data Optimizer WooCommerce AddOn 需要 2meet-data-optimizer 核心外掛，請先安裝並啟用。', 'tmdo-woocommerce' );
+		echo '</p></div>';
+	}
+}

includes/class-tmdo-woocommerce.php

@@ -0,0 +1,672 @@
+<?php
+/**
+ * TMDO_WooCommerce — integration with WooCommerce + WooCommerce Subscriptions.
+ *
+ * Strategy: WC core has its OWN anti-EAV story (HPOS for orders;
+ * `wp_wc_product_meta_lookup` for product search). WPDO's job is to:
+ *   1. Register the 20 `wp_wc_*` tables to Custom_Table_Registry
+ *      (so doctor / conflict-scan know about them)
+ *   2. Add hot-zone fields to Schema_Registry for the legacy postmeta keys
+ *      WC still uses on products / orders (when HPOS off)
+ *   3. Detect HPOS state and surface it to admin
+ *   4. NOT duplicate what WC already does (no shadow lookup tables)
+ *
+ * This is "Tier 5" in ENTITY_ADAPTER_COOKBOOK.md: integrating with a plugin
+ * that has its own anti-EAV solution.
+ *
+ * @package WP_Data_Optimizer
+ * @since   2.1.0
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * WooCommerce integration. No-op when WC not active.
+ */
+final class TMDO_WooCommerce {
+
+	/**
+	 * Provider key for registry.
+	 */
+	public const PROVIDER = 'woocommerce';
+
+	/**
+	 * All 20 wp_wc_* tables WC core creates. Keyed by suffix (no prefix).
+	 *
+	 * @var array<string, array{primary_key: string, post_type_link: ?string, description: string, since: string}>
+	 */
+	private const WC_CORE_TABLES = array(
+		'wc_admin_note_actions'           => array(
+			'primary_key'    => 'action_id',
+			'post_type_link' => null,
+			'description'    => 'WC admin notes — action buttons',
+			'since'          => 'WC 4.0',
+		),
+		'wc_admin_notes'                  => array(
+			'primary_key'    => 'note_id',
+			'post_type_link' => null,
+			'description'    => 'WC admin notes',
+			'since'          => 'WC 4.0',
+		),
+		'wc_category_lookup'              => array(
+			'primary_key'    => 'category_tree_id',
+			'post_type_link' => null,
+			'description'    => 'Product category hierarchy lookup',
+			'since'          => 'WC 4.6',
+		),
+		'wc_customer_lookup'              => array(
+			'primary_key'    => 'customer_id',
+			'post_type_link' => null,
+			'description'    => 'Customer aggregate (anti-EAV by WC core)',
+			'since'          => 'WC 4.0',
+		),
+		'wc_download_log'                 => array(
+			'primary_key'    => 'download_log_id',
+			'post_type_link' => null,
+			'description'    => 'Downloadable product access log',
+			'since'          => 'WC 3.3',
+		),
+		'wc_order_addresses'              => array(
+			'primary_key'    => 'id',
+			'post_type_link' => 'shop_order',
+			'description'    => 'Order billing/shipping addresses (HPOS)',
+			'since'          => 'WC 8.2',
+		),
+		'wc_order_coupon_lookup'          => array(
+			'primary_key'    => 'order_id',
+			'post_type_link' => 'shop_order',
+			'description'    => 'Order coupon analytics lookup',
+			'since'          => 'WC 4.0',
+		),
+		'wc_order_operational_data'       => array(
+			'primary_key'    => 'id',
+			'post_type_link' => 'shop_order',
+			'description'    => 'Order operational data (HPOS)',
+			'since'          => 'WC 8.2',
+		),
+		'wc_order_product_lookup'         => array(
+			'primary_key'    => 'order_item_id',
+			'post_type_link' => 'shop_order',
+			'description'    => 'Order product analytics lookup',
+			'since'          => 'WC 4.0',
+		),
+		'wc_order_stats'                  => array(
+			'primary_key'    => 'order_id',
+			'post_type_link' => 'shop_order',
+			'description'    => 'Order statistics (anti-EAV by WC core)',
+			'since'          => 'WC 4.0',
+		),
+		'wc_order_tax_lookup'             => array(
+			'primary_key'    => null,
+			'post_type_link' => 'shop_order',
+			'description'    => 'Order tax analytics lookup',
+			'since'          => 'WC 4.0',
+		),
+		'wc_orders'                       => array(
+			'primary_key'    => 'id',
+			'post_type_link' => 'shop_order',
+			'description'    => 'Orders main table (HPOS)',
+			'since'          => 'WC 8.2',
+		),
+		'wc_orders_meta'                  => array(
+			'primary_key'    => 'id',
+			'post_type_link' => 'shop_order',
+			'description'    => 'Order meta (HPOS replacement for postmeta)',
+			'since'          => 'WC 8.2',
+		),
+		'wc_product_attributes_lookup'    => array(
+			'primary_key'    => null,
+			'post_type_link' => 'product',
+			'description'    => 'Product attributes lookup (faceted search)',
+			'since'          => 'WC 4.9',
+		),
+		'wc_product_download_directories' => array(
+			'primary_key'    => 'url_id',
+			'post_type_link' => null,
+			'description'    => 'Approved download directories',
+			'since'          => 'WC 6.5',
+		),
+		'wc_product_meta_lookup'          => array(
+			'primary_key'    => 'product_id',
+			'post_type_link' => 'product',
+			'description'    => 'Product meta lookup (anti-EAV by WC core)',
+			'since'          => 'WC 3.6',
+		),
+		'wc_rate_limits'                  => array(
+			'primary_key'    => 'rate_limit_id',
+			'post_type_link' => null,
+			'description'    => 'API rate limits',
+			'since'          => 'WC 5.6',
+		),
+		'wc_reserved_stock'               => array(
+			'primary_key'    => null,
+			'post_type_link' => 'product',
+			'description'    => 'Reserved stock (cart hold)',
+			'since'          => 'WC 4.5',
+		),
+		'wc_tax_rate_classes'             => array(
+			'primary_key'    => 'tax_rate_class_id',
+			'post_type_link' => null,
+			'description'    => 'Tax rate classes',
+			'since'          => 'WC 3.7',
+		),
+		'wc_webhooks'                     => array(
+			'primary_key'    => 'webhook_id',
+			'post_type_link' => null,
+			'description'    => 'Webhooks subscriptions',
+			'since'          => 'WC 2.6',
+		),
+	);
+
+	/**
+	 * Wire integration. No-op when WC not detected.
+	 *
+	 * @return void
+	 */
+	public static function register(): void {
+		if ( ! self::is_active() ) {
+			return;
+		}
+
+		add_action( 'wpdo_register_custom_tables', array( __CLASS__, 'register_custom_tables' ) );
+		add_action( 'wpdo_register_fields', array( __CLASS__, 'register_schema_fields' ) );
+		// v2.1.6: customer hot fields (_money_spent / _order_count / _last_order) move
+		// to Entity_Registry so Hook Bus can route them to wp_wpdo_user_hot once
+		// `entity_user` mode advances past `disabled`. See PLAN-entity-user-cutover.md.
+		add_action( 'wpdo_register_entity_fields', array( __CLASS__, 'register_user_entity_fields' ) );
+
+		// HPOS recommendation notice — only on WC admin pages, only when:
+		// (a) HPOS is OFF, (b) the threshold of legacy orders has been crossed.
+		if ( is_admin() ) {
+			add_action( 'admin_notices', array( __CLASS__, 'maybe_render_hpos_notice' ) );
+		}
+	}
+
+	/**
+	 * Threshold of legacy `shop_order` posts above which we recommend HPOS.
+	 * Below this, the HPOS migration overhead isn't justified.
+	 */
+	private const HPOS_RECOMMEND_THRESHOLD = 100;
+
+	/**
+	 * Option name used to permanently dismiss the notice.
+	 */
+	private const HPOS_NOTICE_DISMISSED_OPT = 'wpdo_hpos_notice_dismissed';
+
+	/**
+	 * Conditionally render the HPOS recommendation admin notice.
+	 *
+	 * @return void
+	 */
+	public static function maybe_render_hpos_notice(): void {
+		// Already enabled or already dismissed.
+		if ( self::is_hpos_enabled() ) {
+			return;
+		}
+		if ( '1' === (string) get_option( self::HPOS_NOTICE_DISMISSED_OPT, '' ) ) {
+			return;
+		}
+		if ( ! current_user_can( 'manage_woocommerce' ) ) {
+			return;
+		}
+
+		// Handle dismiss action (lightweight, no separate AJAX endpoint).
+		// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only nonce check below.
+		if ( ! empty( $_GET['wpdo_hpos_dismiss'] ) ) {
+			$nonce = isset( $_GET['_wpnonce'] ) ? sanitize_text_field( wp_unslash( (string) $_GET['_wpnonce'] ) ) : '';
+			if ( wp_verify_nonce( $nonce, 'wpdo_hpos_dismiss' ) ) {
+				update_option( self::HPOS_NOTICE_DISMISSED_OPT, '1', false );
+				return;
+			}
+		}
+
+		$legacy_count = self::count_legacy_orders();
+		if ( $legacy_count < self::HPOS_RECOMMEND_THRESHOLD ) {
+			return;
+		}
+
+		$dismiss_url  = wp_nonce_url(
+			add_query_arg( 'wpdo_hpos_dismiss', '1' ),
+			'wpdo_hpos_dismiss'
+		);
+		$settings_url = admin_url( 'admin.php?page=wc-settings&tab=advanced&section=features' );
+
+		?>
+		<div class="notice notice-warning is-dismissible">
+			<p>
+				<strong>WP Data Optimizer:</strong>
+				<?php
+				printf(
+					/* translators: 1: legacy order count, 2: HPOS settings URL, 3: dismiss URL */
+					esc_html__( '偵測到 %1$d 筆 legacy shop_order（postmeta-based）。建議啟用 WooCommerce High Performance Order Storage (HPOS) 加速 order 查詢。前往 %2$s 啟用，或 %3$s 永久隱藏此通知。', 'tmdo-woocommerce' ),
+					(int) $legacy_count,
+					'<a href="' . esc_url( $settings_url ) . '">WooCommerce → 進階 → 功能</a>',
+					'<a href="' . esc_url( $dismiss_url ) . '">關閉</a>'
+				);
+				?>
+			</p>
+		</div>
+		<?php
+	}
+
+	/**
+	 * Count legacy `shop_order` posts (excluding HPOS table).
+	 *
+	 * @return int
+	 */
+	private static function count_legacy_orders(): int {
+		global $wpdb;
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+		return (int) $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->posts} WHERE post_type = 'shop_order'" );
+	}
+
+	/**
+	 * Active when WC class loaded OR WC plugin file exists (loose detect for early bootstrap).
+	 *
+	 * @return bool
+	 */
+	public static function is_active(): bool {
+		return class_exists( 'WooCommerce' )
+			|| ( defined( 'WC_VERSION' ) && WC_VERSION )
+			|| file_exists( WP_PLUGIN_DIR . '/woocommerce/woocommerce.php' );
+	}
+
+	/**
+	 * HPOS (custom orders table) detection.
+	 *
+	 * @return bool True when HPOS is enabled.
+	 */
+	public static function is_hpos_enabled(): bool {
+		// WC OrderUtil class — modern WC API.
+		if ( class_exists( 'Automattic\\WooCommerce\\Utilities\\OrderUtil' )
+			&& method_exists( 'Automattic\\WooCommerce\\Utilities\\OrderUtil', 'custom_orders_table_usage_is_enabled' )
+		) {
+			return (bool) Automattic\WooCommerce\Utilities\OrderUtil::custom_orders_table_usage_is_enabled();
+		}
+		// Fallback: option check.
+		return 'yes' === get_option( 'woocommerce_custom_orders_table_enabled' );
+	}
+
+	/**
+	 * Detected WC version (or 'unknown').
+	 *
+	 * @return string
+	 */
+	public static function wc_version(): string {
+		if ( defined( 'WC_VERSION' ) ) {
+			return WC_VERSION;
+		}
+		return 'unknown';
+	}
+
+	/**
+	 * Register all 20 wp_wc_* tables.
+	 *
+	 * @param mixed $registry TMDO_Custom_Table_Registry (passed by action).
+	 * @return void
+	 */
+	public static function register_custom_tables( $registry = null ): void {
+		if ( ! class_exists( 'TMDO_Custom_Table_Registry' ) ) {
+			return;
+		}
+		$registry = $registry ?: TMDO_Custom_Table_Registry::instance();
+
+		foreach ( self::WC_CORE_TABLES as $name => $meta ) {
+			$registry->register(
+				self::PROVIDER,
+				array(
+					'table_name'      => $name,
+					'primary_key'     => $meta['primary_key'] ?: 'id',
+					'post_type_link'  => $meta['post_type_link'],
+					'doctor_callback' => array( __CLASS__, 'doctor_check' ),
+					'description'     => $meta['description'] . ' (' . $meta['since'] . ')',
+				)
+			);
+		}
+
+		// Our own commission tracking table (v2.1.0).
+		$registry->register(
+			self::PROVIDER,
+			array(
+				'table_name'      => 'wpdo_wc_commissions',
+				'primary_key'     => 'id',
+				'post_type_link'  => null,
+				'doctor_callback' => array( __CLASS__, 'doctor_check' ),
+				'description'     => 'Vendor commission tracking (replaces hpct_wc_orders, HPOS-aware) (WPDO 2.1.0)',
+			)
+		);
+	}
+
+	/**
+	 * Register hot-zone meta fields for products + orders + customers.
+	 *
+	 * Delegates to dedicated registrars to keep this method readable.
+	 *
+	 * @param mixed $schema TMDO_Schema_Registry (passed by action).
+	 * @return void
+	 */
+	public static function register_schema_fields( $schema = null ): void {
+		if ( ! class_exists( 'TMDO_Schema_Registry' ) ) {
+			return;
+		}
+		$schema = $schema ?: TMDO_Schema_Registry::instance();
+
+		self::register_product_fields( $schema );
+
+		// Order fields only matter when HPOS is OFF (otherwise WC stores them in wc_orders_meta).
+		if ( ! self::is_hpos_enabled() ) {
+			self::register_order_fields( $schema );
+		}
+
+		// v2.1.6: Customer usermeta hot fields moved out of Schema_Registry — they
+		// are now registered via `register_user_entity_fields()` on the
+		// `wpdo_register_entity_fields` action so Hook Bus can intercept them.
+		// Schema_Registry never had a user-meta interceptor; the previous
+		// registration was inert. See PLAN-entity-user-cutover.md.
+
+		// Subscription fields if WC Subscriptions OR wc-linepay-subscription is active.
+		if ( self::has_subscriptions() ) {
+			self::register_subscription_fields( $schema );
+		}
+	}
+
+	/**
+	 * Product hot fields (search/filter shop pages).
+	 *
+	 * @param TMDO_Schema_Registry $schema Registry.
+	 * @return void
+	 */
+	private static function register_product_fields( $schema ): void {
+		$schema->register_many(
+			self::PROVIDER,
+			array(
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_price',
+					'zone'      => 'hot',
+					'data_type' => 'decimal(15,4) NOT NULL DEFAULT 0',
+					'column'    => '_price',
+					'indexed'   => true,
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_regular_price',
+					'zone'      => 'hot',
+					'data_type' => 'decimal(15,4) NOT NULL DEFAULT 0',
+					'column'    => '_regular_price',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_sale_price',
+					'zone'      => 'hot',
+					'data_type' => 'decimal(15,4) NULL',
+					'column'    => '_sale_price',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_sku',
+					'zone'      => 'hot',
+					'data_type' => "varchar(100) NOT NULL DEFAULT ''",
+					'column'    => '_sku',
+					'indexed'   => true,
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_stock',
+					'zone'      => 'hot',
+					'data_type' => 'decimal(15,4) NULL',
+					'column'    => '_stock',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_stock_status',
+					'zone'      => 'hot',
+					'data_type' => "varchar(20) NOT NULL DEFAULT 'instock'",
+					'column'    => '_stock_status',
+					'indexed'   => true,
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_visibility',
+					'zone'      => 'hot',
+					'data_type' => "varchar(20) NOT NULL DEFAULT 'visible'",
+					'column'    => '_visibility',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_featured',
+					'zone'      => 'hot',
+					'data_type' => "varchar(3) NOT NULL DEFAULT 'no'",
+					'column'    => '_featured',
+					'indexed'   => true,
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_tax_status',
+					'zone'      => 'hot',
+					'data_type' => "varchar(20) NOT NULL DEFAULT 'taxable'",
+					'column'    => '_tax_status',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_virtual',
+					'zone'      => 'hot',
+					'data_type' => "varchar(3) NOT NULL DEFAULT 'no'",
+					'column'    => '_virtual',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_downloadable',
+					'zone'      => 'hot',
+					'data_type' => "varchar(3) NOT NULL DEFAULT 'no'",
+					'column'    => '_downloadable',
+				),
+			)
+		);
+
+		// Cold zone — large display fields rarely searched but always shown.
+		$schema->register_many(
+			self::PROVIDER,
+			array(
+				array(
+					'post_type'   => 'product',
+					'meta_key'    => '_product_attributes',
+					'zone'        => 'cold',
+					'cache_group' => 'wpdo_cold_product',
+					'cache_ttl'   => HOUR_IN_SECONDS,
+				),
+				array(
+					'post_type'   => 'product',
+					'meta_key'    => '_purchase_note',
+					'zone'        => 'cold',
+					'cache_group' => 'wpdo_cold_product',
+					'cache_ttl'   => HOUR_IN_SECONDS,
+				),
+			)
+		);
+	}
+
+	/**
+	 * Order hot fields (legacy postmeta path; only registered when HPOS off).
+	 *
+	 * @param TMDO_Schema_Registry $schema Registry.
+	 * @return void
+	 */
+	private static function register_order_fields( $schema ): void {
+		$schema->register_many(
+			self::PROVIDER,
+			array(
+				array(
+					'post_type' => 'shop_order',
+					'meta_key'  => '_order_total',
+					'zone'      => 'hot',
+					'data_type' => 'decimal(15,4) NOT NULL DEFAULT 0',
+					'column'    => '_order_total',
+					'indexed'   => true,
+				),
+				array(
+					'post_type' => 'shop_order',
+					'meta_key'  => '_order_currency',
+					'zone'      => 'hot',
+					'data_type' => "varchar(8) NOT NULL DEFAULT ''",
+					'column'    => '_order_currency',
+				),
+				array(
+					'post_type' => 'shop_order',
+					'meta_key'  => '_billing_email',
+					'zone'      => 'hot',
+					'data_type' => "varchar(254) NOT NULL DEFAULT ''",
+					'column'    => '_billing_email',
+					'indexed'   => true,
+				),
+				array(
+					'post_type' => 'shop_order',
+					'meta_key'  => '_payment_method',
+					'zone'      => 'hot',
+					'data_type' => "varchar(60) NOT NULL DEFAULT ''",
+					'column'    => '_payment_method',
+					'indexed'   => true,
+				),
+				array(
+					'post_type' => 'shop_order',
+					'meta_key'  => '_customer_user',
+					'zone'      => 'hot',
+					'data_type' => 'bigint(20) NOT NULL DEFAULT 0',
+					'column'    => '_customer_user',
+					'indexed'   => true,
+				),
+			)
+		);
+	}
+
+	/**
+	 * Customer usermeta hot fields — registered to Entity_Registry so Hook Bus can
+	 * route them to `wp_wpdo_user_hot` once `entity_user` mode advances past `disabled`.
+	 *
+	 * Replaces the v2.1.5 `register_customer_fields()` which targeted Schema_Registry
+	 * (zone-based, no user interceptor) — that path was inert. See
+	 * PLAN-entity-user-cutover.md for the migration playbook.
+	 *
+	 * Type mapping (Entity_Registry uses fixed-precision DECIMAL(18,6) / BIGINT(20),
+	 * which is a superset of the prior `decimal(15,4)` / `bigint(20)` declarations —
+	 * no precision loss):
+	 *   - _money_spent  → decimal (DECIMAL(18,6))
+	 *   - _order_count  → integer (BIGINT(20))
+	 *   - _last_order   → integer (BIGINT(20))
+	 *
+	 * @return void
+	 */
+	public static function register_user_entity_fields(): void {
+		if ( ! class_exists( 'TMDO_Entity_Registry' ) ) {
+			return;
+		}
+		TMDO_Entity_Registry::register_group(
+			'user',
+			'hot',
+			array(
+				array(
+					'key'        => '_money_spent',
+					'type'       => 'decimal',
+					'searchable' => true,
+					'label'      => 'WC customer cumulative spend',
+				),
+				array(
+					'key'        => '_order_count',
+					'type'       => 'integer',
+					'searchable' => true,
+					'label'      => 'WC customer order count',
+				),
+				array(
+					'key'   => '_last_order',
+					'type'  => 'integer',
+					'label' => 'WC customer last order ID',
+				),
+			)
+		);
+	}
+
+	/**
+	 * Subscription product fields (wc-subscriptions or wc-linepay-subscription).
+	 *
+	 * @param TMDO_Schema_Registry $schema Registry.
+	 * @return void
+	 */
+	private static function register_subscription_fields( $schema ): void {
+		$schema->register_many(
+			self::PROVIDER,
+			array(
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_subscription_price',
+					'zone'      => 'hot',
+					'data_type' => 'decimal(15,4) NULL',
+					'column'    => '_subscription_price',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_subscription_period',
+					'zone'      => 'hot',
+					'data_type' => 'varchar(20) NULL',
+					'column'    => '_subscription_period',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_subscription_period_interval',
+					'zone'      => 'hot',
+					'data_type' => 'int(11) NULL',
+					'column'    => '_subscription_period_interval',
+				),
+				array(
+					'post_type' => 'product',
+					'meta_key'  => '_subscription_length',
+					'zone'      => 'hot',
+					'data_type' => 'int(11) NULL',
+					'column'    => '_subscription_length',
+				),
+			)
+		);
+	}
+
+	/**
+	 * Subscription extension detection — WC native or wc-linepay-subscription.
+	 *
+	 * @return bool
+	 */
+	private static function has_subscriptions(): bool {
+		return class_exists( 'WC_Subscriptions' )
+			|| defined( 'WCS_INIT_TIMESTAMP' )
+			|| file_exists( WP_PLUGIN_DIR . '/wc-linepay-subscription/wc-linepay-subscription.php' );
+	}
+
+	/**
+	 * WPDO doctor probe for any wc_* table — verifies existence + reports row count.
+	 *
+	 * @param string $table_suffix Suffix without prefix.
+	 * @return array{ok:bool, message:string}
+	 */
+	public static function doctor_check( string $table_suffix ): array {
+		global $wpdb;
+		$full   = $wpdb->prefix . $table_suffix;
+		$exists = (bool) $wpdb->get_var( // phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
+			$wpdb->prepare( 'SHOW TABLES LIKE %s', $full )
+		);
+		if ( ! $exists ) {
+			$is_hpos_table = in_array( $table_suffix, array( 'wc_orders', 'wc_orders_meta', 'wc_order_addresses', 'wc_order_operational_data' ), true );
+			$msg           = $is_hpos_table
+				? "{$full} 不存在 — HPOS 尚未啟用或 WC 版本 < 8.2。"
+				: "{$full} 不存在 — 請確認 WooCommerce 已啟用。";
+			return array(
+				'ok'      => false,
+				'message' => $msg,
+			);
+		}
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery,WordPress.DB.DirectDatabaseQuery.NoCaching,WordPress.DB.PreparedSQL.InterpolatedNotPrepared
+		$count = (int) $wpdb->get_var( "SELECT COUNT(*) FROM `{$full}`" );
+		return array(
+			'ok'      => true,
+			'message' => "{$full}: {$count} rows",
+		);
+	}
+}