test,ci: 建立 phpunit 基建 + 移植 WC 測試 + CI workflow

- composer.json / phpunit.xml / tests/bootstrap.php（比照 HP AddOn，
  直接 require 核心 plugin 的 unit bootstrap）
- tests/unit/WooCommerceIntegrationTest.php（自 A 移植，10 tests）
- .gitea/workflows/test.yml：lint + unit（unit job 會一併 checkout 核心 plugin，
  因為測試 bootstrap 依賴它）

10 tests / 33 assertions GREEN

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

composer.json

@@ -1,18 +1,24 @@
 {
     "name": "2meet/2meet-data-optimizer-woocommerce-addon",
-    "description": "WooCommerce 整合：20 表 schema 註冊 + commission tracking + product/order zone + HPOS notice",
+    "description": "WooCommerce integration layer for 2meet Data Optimizer",
     "type": "wordpress-plugin",
     "license": "GPL-2.0-or-later",
-    "keywords": ["wordpress", "2meet-data-optimizer", "addon", "woocommerce"],
     "require": {
         "php": ">=8.1"
     },
     "require-dev": {
+        "brain/monkey": "^2.6",
+        "dealerdirect/phpcodesniffer-composer-installer": "^1.2",
+        "phpcompatibility/phpcompatibility-wp": "^2.1",
+        "phpcsstandards/phpcsutils": "^1.2",
         "phpunit/phpunit": "^10.5",
-        "wp-coding-standards/wpcs": "^3.0"
+        "squizlabs/php_codesniffer": "^3.13",
+        "wp-coding-standards/wpcs": "^3.0",
+        "yoast/phpunit-polyfills": "^2.0"
     },
     "scripts": {
-        "phpcs": "phpcs --standard=WordPress includes/ 2meet-data-optimizer-woocommerce-addon.php"
+        "test": "phpunit --configuration phpunit.xml",
+        "phpcs": "phpcs --standard=WordPress includes/ admin/ cli/"
     },
     "config": {
         "allow-plugins": {