Add external service config overrides (Chatwoot compose + widget fix, Twenty compose)

- external-configs/chatwoot/docker-compose.yaml: shared DB version
- external-configs/chatwoot/app/views/widgets/show.html.erb: bypass broken Vite
- external-configs/twenty/packages/twenty-docker/docker-compose.yml: shared DB version
- .gitignore: fix path patterns (root-only for dirs, docker-compose.yml)

.gitignore

@@ -1,6 +1,6 @@
 # 外部源码目录（通过 git clone 获取，不纳入本项目仓库）
-chatwoot/
-twenty/
+/chatwoot/
+/twenty/
 
 # 敏感配置文件（含 API keys / tokens / secrets）
 bridge/chatwoot.config.json
@@ -9,7 +9,7 @@ bridge/twenty.config.json
 bridge/kb.config.json
 chatwoot/.env
 twenty/packages/twenty-docker/.env
-docker-compose.yml
+/docker-compose.yml
 
 
 # 运行时生成