✨ feat(playbook): add install_mode deployment config

BREAKING CHANGE: [vendor] and playbook.deploy_root are no longer supported. Use [playbook].install_mode and playbook.playbook_root instead.

tests/README.md

@@ -16,7 +16,7 @@ tests/
 ├── test_no_backup_flags.py         # no_backup 行为测试
 ├── test_playbook_typing_imports.py # playbook.py typing 导入兼容性测试
 ├── test_sync_directory_actions.py  # sync_memory_bank/sync_prompts 行为测试
-├── test_vendor_snapshot_templates.py # vendor 快照模板完整性测试
+├── test_vendor_snapshot_templates.py # snapshot 快照模板完整性测试
 ├── test_main_loop_cli.py           # main_loop CLI 测试
 ├── test_thirdparty_skills_pipeline.py # thirdparty skills 流水线配置与同步产物测试
 ├── test_sync_templates_placeholders.py # 占位符替换测试（sync_rules/sync_standards）
@@ -70,7 +70,7 @@ sh tests/integration/check_doc_links.sh
 
 - CLI 参数解析与帮助信息
 - TOML 配置解析与动作顺序
-- vendor/sync_rules/sync_memory_bank/sync_prompts/sync_standards 等基础动作落地
+- snapshot install/sync_rules/sync_memory_bank/sync_prompts/sync_standards 等基础动作落地
 
 ### 2. 模板验证测试 (templates/)