refactor: rename openhis → healthlink-his (complete rebranding)

- Maven modules: openhis-* → healthlink-his-*
- Java packages: com.openhis → com.healthlink.his (3,278 files)
- Configuration: context-path, DB schema, logger, package scan
- Frontend: API paths /openhis/ → /healthlink-his/ (30 files)
- Database: healthlink_his schema with 188 tables (copied from hisdev)
- Verified: 18/18 API tests passed, 10-concurrent smoke test passed

openhis-ui-vue3/src/utils/index.js

@@ -1,4 +1,4 @@
-import { parseTime } from './openhis'
+import { parseTime } from './healthlink-his'
 
 // 导出 parseTime 函数以供其他模块使用
 export { parseTime }