refactor: 彻底清除所有openhis痕迹

- 重命名目录: openhis-server-new → healthlink-his-server
- 重命名目录: openhis-ui-vue3 → healthlink-his-ui
- 重命名Java类: OpenHisApplication → HealthLinkHisApplication
- 重命名Java类: OpenHisMiniApp → HealthLinkHisMiniApp
- 重命名组件目录: OpenHis → HealthLinkHis
- 重命名样式文件: openhis.scss → healthlink-his.scss
- 重命名配置: nginx-openhis.conf → nginx-healthlink-his.conf
- 更新所有源码引用 (0个残留)
- 更新所有文档/脚本/配置中的引用

healthlink-his-server/com/healthlink/his/tool/DatabaseFieldAdder.java

@@ -0,0 +1,50 @@
+package com.healthlink.his.tool;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.Statement;
+
+/**
+ * Database field adder tool
+ */
+public class DatabaseFieldAdder {
+    public static void main(String[] args) {
+        String url = System.getenv("DB_URL");
+        String username = System.getenv("DB_USERNAME");
+        String password = System.getenv("DB_PASSWORD");
+        
+        if (url == null || username == null || password == null) {
+            System.err.println("Please set DB_URL, DB_USERNAME, DB_PASSWORD environment variables");
+            return;
+        }
+        
+        try (Connection conn = DriverManager.getConnection(url, username, password);
+             Statement stmt = conn.createStatement()) {
+            
+            // Check if field exists
+            String checkSql = "SELECT column_name FROM information_schema.columns " +
+                             "WHERE table_name = 'adm_healthcare_service' AND column_name = 'practitioner_id'";
+            
+            boolean fieldExists = stmt.executeQuery(checkSql).next();
+            
+            if (!fieldExists) {
+                // Add field
+                String addSql = "ALTER TABLE \"public\".\"adm_healthcare_service\" " +
+                               "ADD COLUMN \"practitioner_id\" int8";
+                stmt.execute(addSql);
+                
+                // Add comment
+                String commentSql = "COMMENT ON COLUMN \"public\".\"adm_healthcare_service\".\"practitioner_id\" IS 'practitioner_id'";
+                stmt.execute(commentSql);
+                
+                System.out.println("Successfully added practitioner_id field to adm_healthcare_service table");
+            } else {
+                System.out.println("practitioner_id field already exists");
+            }
+            
+        } catch (Exception e) {
+            System.err.println("Error executing SQL: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+}