feat: Implement job title suggestion service with caching and tokenization

ruoyi-bussiness/src/main/resources/mapper/app/JobMapper.xml

@@ -305,6 +305,15 @@
         LEFT JOIN (SELECT jc1.*, ROW_NUMBER() OVER(PARTITION BY jc1.job_id ORDER BY jc1.id) rn FROM job_contact jc1 WHERE jc1.del_flag='0') jc ON jc.job_id = j.job_id AND jc.rn=1
         WHERE j.del_flag = '0' and job_status='0' limit #{offset},#{batchSize}
     </select>
+
+    <select id="selectValidJobTitles" resultType="java.lang.String">
+        SELECT DISTINCT trim(job_title)
+        FROM job
+        WHERE del_flag = '0'
+          AND job_status = '0'
+          AND job_title IS NOT NULL
+          AND trim(job_title) &lt;&gt; ''
+    </select>
     <select id="selectAllInsertRowWork" resultType="com.ruoyi.cms.domain.RowWork">
         select  Id, TaskId, TaskName, Std_class, SF, ZCMC, Aca112, Acb22a, Aac011, Acb240,
                 Recruit_Num, Acb202, Aab302, Acb241, Salary, SalaryLow, SalaryHight, Aae397,
@@ -441,4 +450,4 @@
         update job set job_status='0', update_time = NOW() where  del_flag='0' and company_id=#{companyId} and job_status='1'
     </update>
 
-</mapper>
+</mapper>