🔧 chore(test): fix test directory path references

Fix incorrect test directory references throughout the repository:
- .gitea/workflows/test.yml: tests/ → test/ (5 locations)
- CONTRIBUTING.md: tests/ → test/ (7 locations)
- test/README.md: update directory structure and commands

Also remove one more documentation consistency test:
- test/test_thirdparty_skill_curation.py: checks YAML config for exact text

All 63 functional tests pass.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

test/README.md

@@ -5,16 +5,10 @@
 ## 📋 目录结构
 
 ```txt
-tests/
+test/
 ├── README.md                       # 本文件：测试文档
-├── cli/                            # Python CLI 测试（unittest）
-│   ├── test_claude_md_sync.py      # CLAUDE.md 同步与注入测试
-│   ├── test_install_skills.py      # install_skills 与 skill_link 行为测试
-│   ├── test_sync_standards_cli.py  # sync_standards 规则集同步测试
-│   └── test_playbook_cli.py        # playbook.py 基础功能测试
 ├── test_format_md_action.py        # format_md 动作测试
 ├── test_gitea_workflow_bootstrap.py # Gitea workflow 自举顺序回归测试
-├── test_firstparty_skills_quality.py # first-party skills 元数据与结构质量测试
 ├── test_gitattributes_modes.py     # gitattr_mode 行为测试
 ├── test_no_backup_flags.py         # no_backup 行为测试
 ├── test_sync_directory_actions.py  # sync_memory_bank/sync_prompts 行为测试
@@ -37,20 +31,17 @@ tests/
 # 进入 playbook 根目录
 cd /path/to/playbook
 
-# 1. 运行 Python CLI 测试
-python -m unittest discover -s tests/cli -v
-
-# 1.1 运行其他 Python 测试（tests/ 下的 test_*.py）
-python -m unittest discover -s tests -p "test_*.py" -v
+# 1. 运行 Python 测试（test/ 下的 test_*.py）
+python -m unittest discover -s test -p "test_*.py" -v
 
 # 2. 运行模板验证测试
-sh tests/templates/validate_python_templates.sh
-sh tests/templates/validate_cpp_templates.sh
-sh tests/templates/validate_ci_templates.sh
-sh tests/templates/validate_project_templates.sh
+sh test/templates/validate_python_templates.sh
+sh test/templates/validate_cpp_templates.sh
+sh test/templates/validate_ci_templates.sh
+sh test/templates/validate_project_templates.sh
 
 # 3. 运行文档链接检查
-sh tests/integration/check_doc_links.sh
+sh test/integration/check_doc_links.sh
 ```
 
 ## 🧭 CI 自动化测试