fix(2meet-data-optimizer-woocommerce-addon): read real Marketplace commission keys

- Marketplace writes hp_vendor / hp_commission_rate / hp_commission_fee (no
  underscore); the _hp_* keys never existed, so no commission was recorded
- Compute subtotal, vendor payout and commission the way
  Marketplace::get_order_profit() does, honouring hp_vendor_include_taxes
- Store the vendor's user ID, the product's parent listing, and the platform
  commission percentage (Marketplace stores the vendor share, e.g. 0.9)

Verify: phpunit-integration --filter WCOrdersInterceptorTest (4 tests);
  WC unit 10 OK, integration 22 OK
PR: PR-012

tests/integration/WCOrdersInterceptorTest.php

@@ -0,0 +1,160 @@
+<?php
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+
+// ── Minimal WooCommerce stand-ins: only what the interceptor calls ─────────
+
+if ( ! class_exists( 'TMDO_Test_WC_Order_Item' ) ) {
+	final class TMDO_Test_WC_Order_Item {
+		public function __construct( private int $product_id ) {}
+
+		public function get_product_id(): int {
+			return $this->product_id;
+		}
+	}
+}
+
+if ( ! class_exists( 'TMDO_Test_WC_Order' ) ) {
+	final class TMDO_Test_WC_Order {
+		/**
+		 * @param array<string, mixed> $meta
+		 */
+		public function __construct(
+			private array $meta,
+			private float $total,
+			private float $tax,
+			private float $refunded,
+			private int $product_id
+		) {}
+
+		public function get_meta( string $key ) {
+			return $this->meta[ $key ] ?? '';
+		}
+
+		public function get_total(): float {
+			return $this->total;
+		}
+
+		public function get_total_tax(): float {
+			return $this->tax;
+		}
+
+		public function get_total_refunded(): float {
+			return $this->refunded;
+		}
+
+		public function get_items(): array {
+			return array( new TMDO_Test_WC_Order_Item( $this->product_id ) );
+		}
+	}
+}
+
+if ( ! function_exists( 'wc_get_order' ) ) {
+	function wc_get_order( $order_id ) {
+		return $GLOBALS['_tmdo_test_orders'][ (int) $order_id ] ?? false;
+	}
+}
+
+if ( ! function_exists( 'get_post_field' ) ) {
+	function get_post_field( string $field, $post ) {
+		return $GLOBALS['_tmdo_test_post_fields'][ (int) $post ][ $field ] ?? '';
+	}
+}
+
+/**
+ * Integration test: commission rows follow hivepress-marketplace's real order meta.
+ *
+ * Marketplace writes `hp_vendor` (vendor post ID), `hp_commission_rate` (vendor
+ * share, e.g. 0.9 for a 10% commission) and `hp_commission_fee` (flat fee), and
+ * pays vendors net_total * rate - fee (HivePress\Components\Marketplace::get_order_profit()).
+ */
+class WCOrdersInterceptorTest extends TestCase {
+
+	private const ORDER_ID    = 9001;
+	private const VENDOR_POST = 7;
+	private const VENDOR_USER = 42;
+	private const PRODUCT_ID  = 900;
+	private const LISTING_ID  = 555;
+
+	public static function setUpBeforeClass(): void {
+		TMDO_Installer::install_v2_tables();
+	}
+
+	protected function setUp(): void {
+		global $wpdb;
+		$wpdb->prefix  = 'wp_itest_';
+		$wpdb->options = 'wp_itest_options';
+		$wpdb->query( 'DELETE FROM `wp_itest_wpdo_wc_commissions` WHERE wc_order_id = ' . self::ORDER_ID );
+
+		delete_option( 'hp_vendor_include_taxes' );
+		TMDO_Feature_Flags::set( 'wc_orders', 'dual_write' );
+
+		$GLOBALS['_tmdo_test_post_fields'] = array(
+			self::VENDOR_POST => array( 'post_author' => self::VENDOR_USER ),
+			self::PRODUCT_ID  => array( 'post_parent' => self::LISTING_ID ),
+		);
+	}
+
+	protected function tearDown(): void {
+		TMDO_Feature_Flags::set( 'wc_orders', 'idle' );
+		unset( $GLOBALS['_tmdo_test_orders'], $GLOBALS['_tmdo_test_post_fields'] );
+	}
+
+	private function place_order( array $meta, float $total, float $tax = 0.0, float $refunded = 0.0 ): void {
+		$GLOBALS['_tmdo_test_orders'][ self::ORDER_ID ] = new TMDO_Test_WC_Order( $meta, $total, $tax, $refunded, self::PRODUCT_ID );
+		( new TMDO_WC_Orders_Interceptor() )->action_order_status_changed( self::ORDER_ID, 'pending', 'processing' );
+	}
+
+	private function commission_row(): ?array {
+		global $wpdb;
+		return $wpdb->get_row( 'SELECT * FROM `wp_itest_wpdo_wc_commissions` WHERE wc_order_id = ' . self::ORDER_ID, ARRAY_A );
+	}
+
+	private function marketplace_meta(): array {
+		return array(
+			'hp_vendor'          => self::VENDOR_POST,
+			'hp_commission_rate' => 0.9,
+			'hp_commission_fee'  => 5,
+		);
+	}
+
+	public function test_records_commission_from_marketplace_meta(): void {
+		$this->place_order( $this->marketplace_meta(), 110.0, 10.0 );
+
+		$row = $this->commission_row();
+
+		$this->assertNotNull( $row );
+		$this->assertSame( self::VENDOR_USER, (int) $row['vendor_id'] );
+		$this->assertSame( self::LISTING_ID, (int) $row['listing_id'] );
+		$this->assertEqualsWithDelta( 100.0, (float) $row['subtotal'], 0.0001 );
+		$this->assertEqualsWithDelta( 85.0, (float) $row['vendor_payout'], 0.0001 );
+		$this->assertEqualsWithDelta( 15.0, (float) $row['commission'], 0.0001 );
+		$this->assertEqualsWithDelta( 10.0, (float) $row['commission_rate'], 0.0001 );
+	}
+
+	public function test_includes_taxes_when_marketplace_setting_is_on(): void {
+		update_option( 'hp_vendor_include_taxes', '1' );
+
+		$this->place_order( $this->marketplace_meta(), 110.0, 10.0 );
+
+		$row = $this->commission_row();
+		$this->assertEqualsWithDelta( 110.0, (float) $row['subtotal'], 0.0001 );
+		$this->assertEqualsWithDelta( 94.0, (float) $row['vendor_payout'], 0.0001 );
+		$this->assertEqualsWithDelta( 16.0, (float) $row['commission'], 0.0001 );
+	}
+
+	public function test_skips_orders_without_marketplace_vendor(): void {
+		$this->place_order( array(), 110.0 );
+
+		$this->assertNull( $this->commission_row() );
+	}
+
+	public function test_vendor_payout_never_goes_negative(): void {
+		$this->place_order( $this->marketplace_meta(), 3.0 );
+
+		$row = $this->commission_row();
+		$this->assertEqualsWithDelta( 0.0, (float) $row['vendor_payout'], 0.0001 );
+		$this->assertEqualsWithDelta( 3.0, (float) $row['commission'], 0.0001 );
+	}
+}