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-server-new/core-flowable/pom.xml

@@ -2,8 +2,8 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
-        <groupId>com.openhis</groupId>
-        <artifactId>openhis-server</artifactId>
+        <groupId>com.healthlink.his</groupId>
+        <artifactId>healthlink-his-server</artifactId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>