feat: add PostgreSQL web installation wizard

oa-backend/src/main/java/com/kaidi/oa/seed/AdminQualElecSeeder.java

@@ -4,7 +4,6 @@ import com.kaidi.oa.domain.QualElecLicense;
 import com.kaidi.oa.repository.QualElecLicenseRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.time.LocalDate;
@@ -17,7 +16,7 @@ import java.time.LocalDate;
  *
  * @Order(225) 在所有主数据 Seeder（最高 220）之后运行；幂等（count > 0 跳过）。
  */
-@Component
+@DemoSeed
 @Order(225)
 public class AdminQualElecSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/AdminQualSeeder.java

@@ -14,7 +14,6 @@ import com.kaidi.oa.repository.StaffDossierItemRepository;
 import com.kaidi.oa.repository.StaffDossierRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.math.BigDecimal;
 import java.time.Instant;
@@ -26,7 +25,7 @@ import java.time.LocalDate;
  * 幂等 + 非破坏：以各表是否已有数据为哨兵，仅在空表时灌入少量演示数据，让深水页面首屏不空。
  * 日期以"当前日期 +/- 偏移"动态生成，使到期分级预警在任何时间运行都有 即将到期/逾期 样本。
  */
-@Component
+@DemoSeed
 @Order(6)
 public class AdminQualSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/ArchiveCrossModuleSeeder.java

@@ -6,7 +6,6 @@ import com.kaidi.oa.repository.ArchiveRepository;
 import com.kaidi.oa.repository.ArchiveVersionRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -26,7 +25,7 @@ import java.time.Instant;
  * <p>幂等：同 sourceType 在 archive 表已有记录则跳过整批（count 检查）。
  * @Order(205) 在所有基础 Seeder 后运行。
  */
-@Component
+@DemoSeed
 @Order(205)
 public class ArchiveCrossModuleSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/AuditDeptSeeder.java

@@ -11,7 +11,6 @@ import com.kaidi.oa.repository.LegalRegulationRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -31,7 +30,7 @@ import java.time.temporal.ChronoUnit;
  * 幂等：各表 count > 0 即跳过。
  * @Order(202) 在 FertPkgAccountingSeeder(@Order 201) 之后运行。
  */
-@Component
+@DemoSeed
 @Order(202)
 public class AuditDeptSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/BidTenderCollabSeeder.java

@@ -5,7 +5,6 @@ import com.kaidi.oa.repository.BidTenderCollabRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -16,7 +15,7 @@ import java.time.Instant;
  * 让前端看板活体可见且流程闭环可演示。
  * 幂等：若已有数据则跳过，防止重启重复写入。
  */
-@Component
+@DemoSeed
 @Order(215)
 public class BidTenderCollabSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/BidTenderDocSeeder.java

@@ -8,7 +8,6 @@ import com.kaidi.oa.repository.BidRepository;
 import com.kaidi.oa.repository.BidTenderDocRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.time.LocalDate;
@@ -18,7 +17,7 @@ import java.time.LocalDate;
  *
  * @Order(215) 在所有主数据 Seeder 之后运行；幂等（count > 0 则跳过）。
  */
-@Component
+@DemoSeed
 @Order(215)
 public class BidTenderDocSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/BranchFinDemoSeeder.java

@@ -8,7 +8,6 @@ import com.kaidi.oa.repository.OrgBranchRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.util.ArrayList;
@@ -32,7 +31,7 @@ import java.util.List;
  *
  * @Order(15) 在 DataSeeder(@Order 1) 之后独立运行。
  */
-@Component
+@DemoSeed
 @Order(15)
 public class BranchFinDemoSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/BrandCultureGapSeeder.java

@@ -7,7 +7,6 @@ import com.kaidi.oa.repository.EmployeeShareMaterialRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.util.ArrayList;
@@ -21,7 +20,7 @@ import java.util.List;
  *
  * @Order(220) 在所有主数据 Seeder 之后运行；幂等（count > 0 则跳过）。
  */
-@Component
+@DemoSeed
 @Order(220)
 public class BrandCultureGapSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/BrandCultureSeeder.java

@@ -8,7 +8,6 @@ import com.kaidi.oa.repository.ContentTaskRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.util.ArrayList;
@@ -20,7 +19,7 @@ import java.util.List;
  * 补全两个"活体返回空/无数据"缺口，让前端物料管理与任务分派功能可见可演示。
  * @Order(22)，在 DataSeeder(@Order 1) 之后运行，幂等（count > 0 跳过）。
  */
-@Component
+@DemoSeed
 @Order(22)
 public class BrandCultureSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/CostCtrlDemoSeeder.java

@@ -12,7 +12,6 @@ import com.kaidi.oa.repository.StandardCostRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -37,7 +36,7 @@ import java.time.temporal.ChronoUnit;
  * 幂等：各表 count() > 0 即跳过，重启不重复插入。
  * @Order(9) 在 DataSeeder(@Order 1) 之后独立运行。
  */
-@Component
+@DemoSeed
 @Order(9)
 public class CostCtrlDemoSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/CostCtrlGapSeeder.java

@@ -20,7 +20,6 @@ import com.kaidi.oa.repository.RdEbomRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -50,7 +49,7 @@ import java.time.temporal.ChronoUnit;
  *
  * 幂等：各表 count() > 0 则跳过，重启安全。
  */
-@Component
+@DemoSeed
 @Order(215)
 public class CostCtrlGapSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/CslDemoSeeder.java

@@ -8,7 +8,6 @@ import com.kaidi.oa.repository.CslTimesheetRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -21,7 +20,7 @@ import java.time.Instant;
  *
  * 幂等：按 code 查重后跳过，重启不重复插入。
  */
-@Component
+@DemoSeed
 @Order(7)
 public class CslDemoSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/CultureBriefingKpiSeeder.java

@@ -7,7 +7,6 @@ import com.kaidi.oa.repository.HrCultureKpiRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.util.ArrayList;
@@ -21,7 +20,7 @@ import java.util.List;
  *
  * @Order(225) 在 BrandCultureGapSeeder(@Order 220) 之后运行，幂等（count>0跳过）。
  */
-@Component
+@DemoSeed
 @Order(225)
 public class CultureBriefingKpiSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/CultureProjectAssessSeeder.java

@@ -9,7 +9,6 @@ import com.kaidi.oa.repository.HrEmpSatisfactionSurveyRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.math.BigDecimal;
 import java.time.Instant;
@@ -28,7 +27,7 @@ import java.util.List;
  * @Order(50)，在 DataSeeder(@Order 1) 及 BrandCultureSeeder(@Order 22) 之后运行。
  * 幂等：CultureGoal 有数据时跳过全部种子。
  */
-@Component
+@DemoSeed
 @Order(50)
 public class CultureProjectAssessSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/DataSeeder.java

@@ -158,7 +158,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Duration;
 import java.time.Instant;
@@ -171,7 +170,7 @@ import java.util.List;
  * in-flight form instances, plus org/users/roles, meetings, documents,
  * announcements and schedule events.
  */
-@Component
+@DemoSeed
 @Order(1)
 public class DataSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/DeclAchievementSeeder.java

@@ -7,7 +7,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -15,7 +14,7 @@ import java.time.Instant;
  * 申报成果库演示数据补种（Gap 4：活体 decl-achievements 0条，功能可达但未预置演示数据）。
  * Order(3)=在 DataSeeder(Order 1)/AdminQualSeeder 之后运行，避免依赖竞争。
  */
-@Component
+@DemoSeed
 @Order(3)
 public class DeclAchievementSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/DemoSeed.java

@@ -0,0 +1,18 @@
+package com.kaidi.oa.seed;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.stereotype.Component;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Component
+@ConditionalOnProperty(name = "oa.seed.demo", havingValue = "true", matchIfMissing = true)
+public @interface DemoSeed {
+}

oa-backend/src/main/java/com/kaidi/oa/seed/FertPkgAccountingSeeder.java

@@ -10,7 +10,6 @@ import com.kaidi.oa.repository.FertPkgMaterialLedgerRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -27,7 +26,7 @@ import java.time.Instant;
  * 幂等：按唯一编码查重后跳过，重启不重复插入。
  * Order(201) 保证在 DataSeeder(200) 之后执行。
  */
-@Component
+@DemoSeed
 @Order(201)
 public class FertPkgAccountingSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/FinDeptDeepSeeder.java

@@ -14,7 +14,6 @@ import com.kaidi.oa.repository.FinRdTimesheetRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -35,7 +34,7 @@ import java.time.temporal.ChronoUnit;
  *
  * @Order(13) 在 FinDeptSeeder(@Order 12) 之后运行。
  */
-@Component
+@DemoSeed
 @Order(13)
 public class FinDeptDeepSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/FinDeptGapSeeder.java

@@ -8,7 +8,6 @@ import com.kaidi.oa.repository.TaxFilingRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -26,7 +25,7 @@ import java.time.temporal.ChronoUnit;
  *
  * @Order(215) 在既有 FinDeptSeeder(@Order 12)、BranchFinDemoSeeder(@Order 15) 之后。
  */
-@Component
+@DemoSeed
 @Order(215)
 public class FinDeptGapSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/FinDeptSeeder.java

@@ -14,7 +14,6 @@ import com.kaidi.oa.repository.FinVoucherTemplateRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -35,7 +34,7 @@ import java.time.temporal.ChronoUnit;
  *
  * @Order(12) 在 DataSeeder(@Order 1) 之后运行。
  */
-@Component
+@DemoSeed
 @Order(12)
 public class FinDeptSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/FinPaymentDemoSeeder.java

@@ -15,7 +15,6 @@ import com.kaidi.oa.repository.FinVoucherTemplateRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.math.BigDecimal;
 import java.time.Instant;
@@ -36,7 +35,7 @@ import java.util.List;
  *
  * @Order(20) 在 DataSeeder(@Order 1) 和 BranchFinDemoSeeder(@Order 15) 之后运行。
  */
-@Component
+@DemoSeed
 @Order(20)
 public class FinPaymentDemoSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/FinancingDomainSeeder.java

@@ -13,7 +13,6 @@ import com.kaidi.oa.repository.PmtBankRelationRepository;
 import com.kaidi.oa.repository.RepaymentPlanRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.math.BigDecimal;
 import java.time.Instant;
@@ -24,7 +23,7 @@ import java.time.Instant;
  * 只在对应表为空时执行，防止重复。@Order(20) 在 DataSeeder(@Order(1)) 之后运行。
  */
 @Order(20)
-@Component
+@DemoSeed
 public class FinancingDomainSeeder implements CommandLineRunner {
 
     private final PmtBankRelationRepository bankRelRepo;

oa-backend/src/main/java/com/kaidi/oa/seed/HrLaborTemplateSeeder.java

@@ -4,7 +4,6 @@ import com.kaidi.oa.domain.HrLaborTemplate;
 import com.kaidi.oa.repository.HrLaborTemplateRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.time.LocalDate;
@@ -17,7 +16,7 @@ import java.time.LocalDate;
  *
  * 幂等（count > 0 跳过）；@Order(226) 在 AdminQualElecSeeder(225) 之后运行。
  */
-@Component
+@DemoSeed
 @Order(226)
 public class HrLaborTemplateSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/HrRecruitSeeder.java

@@ -10,7 +10,6 @@ import com.kaidi.oa.repository.HrRecruitCandidateRepository;
 import com.kaidi.oa.repository.HrRecruitJobRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.time.LocalDate;
@@ -25,7 +24,7 @@ import java.time.LocalDate;
  *   - HrInterviewQuestion 5 条面试题（AI 生成标记）
  *   - HrAiDocDraft       4 条 AI 生成文档（入职资料/岗位说明/员工手册/转正考核，多状态）
  */
-@Component
+@DemoSeed
 @Order(203)
 public class HrRecruitSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/ItDeptDemoSeeder.java

@@ -15,7 +15,6 @@ import com.kaidi.oa.repository.ItSecPolicyConfigRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.math.BigDecimal;
 import java.time.Instant;
@@ -27,7 +26,7 @@ import java.time.ZoneOffset;
  * @Order(204) 在所有主数据Seeder后运行，幂等（count > 0 则跳过）。
  */
 @Order(204)
-@Component
+@DemoSeed
 public class ItDeptDemoSeeder implements ApplicationRunner {
 
     private final ItMonitorItemRepository monitorRepo;

oa-backend/src/main/java/com/kaidi/oa/seed/LabElnAccessLogSeeder.java

@@ -6,7 +6,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.time.temporal.ChronoUnit;
@@ -19,7 +18,7 @@ import java.time.temporal.ChronoUnit;
  *
  * @Order(205) 在所有主数据 Seeder 之后、幂等（count > 0 则跳过）。
  */
-@Component
+@DemoSeed
 @Order(205)
 public class LabElnAccessLogSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/LabTestKanbanSeeder.java

@@ -6,7 +6,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -16,7 +15,7 @@ import java.time.Instant;
  * 让 labkanban.vue 活体展示多状态卡片。
  * Order(8) = 在所有基础 Seeder 之后、FtsIndexRunner(200) 之前。
  */
-@Component
+@DemoSeed
 @Order(8)
 public class LabTestKanbanSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/LegalDemoSeeder.java

@@ -11,7 +11,6 @@ import com.kaidi.oa.repository.LegalCreditInvestRepository;
 import com.kaidi.oa.repository.LitigationCaseRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -27,7 +26,7 @@ import java.time.Instant;
  * @Order(20) 在 DataSeeder(@Order 1) 之后运行；幂等（count>0 则跳过）。
  */
 @Order(20)
-@Component
+@DemoSeed
 public class LegalDemoSeeder implements CommandLineRunner {
 
     private final LitigationCaseRepository caseRepo;

oa-backend/src/main/java/com/kaidi/oa/seed/LegalPolicyAnonSeeder.java

@@ -6,7 +6,6 @@ import com.kaidi.oa.repository.ComplianceAnonReportRepository;
 import com.kaidi.oa.repository.LegalPolicyRevisionRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -17,7 +16,7 @@ import java.time.Instant;
  * @Order(21)，在 LegalDemoSeeder(@Order 20) 之后；幂等。
  */
 @Order(21)
-@Component
+@DemoSeed
 public class LegalPolicyAnonSeeder implements CommandLineRunner {
 
     private final LegalPolicyRevisionRepository revisionRepo;

oa-backend/src/main/java/com/kaidi/oa/seed/MarketCampaignSeeder.java

@@ -6,7 +6,6 @@ import com.kaidi.oa.repository.MarketCampaignRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.util.ArrayList;
@@ -23,7 +22,7 @@ import java.util.List;
  *
  * @Order(10) — 在 DataSeeder(@Order 1) 之后独立运行，幂等（count > 0 则跳过）。
  */
-@Component
+@DemoSeed
 @Order(10)
 public class MarketCampaignSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/OrgEnrichmentSeeder.java

@@ -7,7 +7,6 @@ import com.kaidi.oa.repository.SysDeptRepository;
 import com.kaidi.oa.repository.SysUserRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -23,7 +22,7 @@ import java.util.Map;
  * Idempotent + non-destructive: runs after the base seeder, only adds users that are
  * missing (guard on a sentinel login). All accounts use password 123456.
  */
-@Component
+@DemoSeed
 @Order(2)
 public class OrgEnrichmentSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/RdDeclPlanSeeder.java

@@ -7,7 +7,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -21,7 +20,7 @@ import java.time.Instant;
  * 注意：本 seeder 独立于 DataSeeder（Order=2 在 DataSeeder Order=1 之后运行），
  * 不修改 DataSeeder 的大构造函数。
  */
-@Component
+@DemoSeed
 @Order(2)
 public class RdDeclPlanSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/SewageBenchmarkSeeder.java

@@ -7,7 +7,6 @@ import com.kaidi.oa.repository.SewagePlantBenchmarkRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
@@ -23,7 +22,7 @@ import java.time.Instant;
  *
  * 幂等：各表 count == 0 才插入。
  */
-@Component
+@DemoSeed
 @Order(206)
 public class SewageBenchmarkSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/SewageCrossDeptSeeder.java

@@ -8,7 +8,6 @@ import com.kaidi.oa.repository.SewageExtLabCommissionRepository;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.time.Instant;
@@ -22,7 +21,7 @@ import java.time.temporal.ChronoUnit;
  *
  * 幂等：linkageRepo.count() == 0 才插入；commRepo.count() == 0 才插入。
  */
-@Component
+@DemoSeed
 @Order(30)
 public class SewageCrossDeptSeeder implements ApplicationRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/SvSupervisionMinuteSeeder.java

@@ -11,7 +11,6 @@ import com.kaidi.oa.repository.SupervisionProjectRepository;
 import com.kaidi.oa.repository.SvIndepClaimRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 import java.util.List;
@@ -32,7 +31,7 @@ import java.util.List;
  * <p>@Order(210) 在 DataSeeder(@Order 1) 之后运行；幂等（SvIndepClaim.count>0 则跳过）。
  */
 @Order(210)
-@Component
+@DemoSeed
 public class SvSupervisionMinuteSeeder implements CommandLineRunner {
 
     private final SvIndepClaimRepository claimRepo;

oa-backend/src/main/java/com/kaidi/oa/seed/TemplateJsonSeeder.java

@@ -8,7 +8,6 @@ import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
-import org.springframework.stereotype.Component;
 
 import java.io.InputStream;
 
@@ -21,7 +20,7 @@ import java.io.InputStream;
  * JSON file under resources/seed-templates and rebuilding adds templates without
  * any code change. This is how 凯迪科技's real approval processes are catalogued.
  */
-@Component
+@DemoSeed
 @Order(100)
 public class TemplateJsonSeeder implements CommandLineRunner {
 

oa-backend/src/main/java/com/kaidi/oa/seed/WwOpsSeeder.java

@@ -10,7 +10,6 @@ import com.kaidi.oa.repository.WwMsdsFileRepository;
 import com.kaidi.oa.repository.WwSamplingTaskRepository;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
-import org.springframework.stereotype.Component;
 
 import java.time.Instant;
 
@@ -24,7 +23,7 @@ import java.time.Instant;
  *  4. WwSamplingTask：废水采样任务演示数据（覆盖不同状态和超标场景，供 Gap-11 桥接演示）
  */
 @Order(9)
-@Component
+@DemoSeed
 public class WwOpsSeeder implements CommandLineRunner {
 
     private final WwMsdsFileRepository msdsRepo;

oa-backend/src/main/java/com/kaidi/oa/web/HealthController.java

@@ -1,19 +1,41 @@
 package com.kaidi.oa.web;
 
 import com.kaidi.oa.common.ApiResp;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import javax.sql.DataSource;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
 import java.util.Map;
 
-/** Liveness probe. */
+/** Readiness probe used by the installer and online-update rollback gate. */
 @RestController
 @RequestMapping("/api/oa")
 public class HealthController {
 
+    private final DataSource dataSource;
+
+    public HealthController(DataSource dataSource) {
+        this.dataSource = dataSource;
+    }
+
     @GetMapping("/health")
-    public ApiResp<Map<String, String>> health() {
-        return ApiResp.ok(Map.of("status", "UP"));
+    public ResponseEntity<ApiResp<Map<String, String>>> health() {
+        try (Connection connection = dataSource.getConnection();
+                Statement statement = connection.createStatement();
+                ResultSet result = statement.executeQuery("SELECT 1")) {
+            if (connection.isValid(2) && result.next() && result.getInt(1) == 1) {
+                return ResponseEntity.ok(ApiResp.ok(Map.of("status", "UP", "database", "UP")));
+            }
+        } catch (Exception ignored) {
+            // Health responses deliberately avoid exposing connection details.
+        }
+        return ResponseEntity.status(HttpStatus.SERVICE_UNAVAILABLE)
+                .body(new ApiResp<>(50301, "database unavailable", Map.of("status", "DOWN", "database", "DOWN")));
     }
 }