diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCandidateMaterialService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCandidateMaterialService.java
index f52cbd4c..b6f11ac0 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCandidateMaterialService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCandidateMaterialService.java
@@ -1,7 +1,7 @@
 package org.dromara.aihr.service;
 
 import lombok.RequiredArgsConstructor;
-import org.dromara.common.satoken.utils.LoginHelper;
+import org.dromara.common.tenant.helper.TenantHelper;
 import org.dromara.common.core.exception.ServiceException;
 import org.dromara.system.domain.vo.SysOssVo;
 import org.dromara.system.service.ISysOssService;
@@ -192,7 +192,7 @@ public class AihrCandidateMaterialService {
     }
 
     private String tenantId() {
-        String tenantId = LoginHelper.getTenantId();
+        String tenantId = TenantHelper.getTenantId();
         return clean(tenantId, TENANT_ID);
     }
 
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCaseService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCaseService.java
index 6d85f7db..a46f6f0a 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCaseService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrCaseService.java
@@ -5,6 +5,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.dromara.common.satoken.utils.LoginHelper;
+import org.dromara.common.tenant.helper.TenantHelper;
 import org.dromara.aihr.domain.AihrCaseDto.CurateRequest;
 import org.dromara.aihr.domain.AihrCaseDto.CurateResponse;
 import org.dromara.aihr.domain.AihrCaseDto.DetailResponse;
@@ -300,7 +301,7 @@ public class AihrCaseService {
     }
 
     private String tenantId() {
-        return firstNonBlank(LoginHelper.getTenantId(), "000000");
+        return firstNonBlank(TenantHelper.getTenantId(), "000000");
     }
 
     private Optional<CaseSummary> organizeWithModel(CaseState state) {
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrDashboardService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrDashboardService.java
index a6908648..e3113de4 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrDashboardService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrDashboardService.java
@@ -9,7 +9,7 @@ import org.dromara.aihr.domain.AihrDashboardDto.PipelineSummaryResponse;
 import org.dromara.aihr.domain.AihrDashboardDto.RiskResponse;
 import org.dromara.aihr.domain.AihrDashboardDto.StageResponse;
 import org.dromara.aihr.domain.AihrDashboardDto.TrainingRecordResponse;
-import org.dromara.common.satoken.utils.LoginHelper;
+import org.dromara.common.tenant.helper.TenantHelper;
 import org.springframework.dao.DataAccessException;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.beans.factory.annotation.Value;
@@ -253,7 +253,7 @@ public class AihrDashboardService {
     }
 
     private String tenantId() {
-        String tenantId = LoginHelper.getTenantId();
+        String tenantId = TenantHelper.getTenantId();
         return tenantId == null || tenantId.isBlank() ? TENANT_ID : tenantId;
     }
 
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrInterviewService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrInterviewService.java
index 06fc9acc..78a85836 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrInterviewService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrInterviewService.java
@@ -5,7 +5,7 @@ import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.dromara.common.satoken.utils.LoginHelper;
+import org.dromara.common.tenant.helper.TenantHelper;
 import org.dromara.aihr.domain.AihrInterviewDto.AnswerRequest;
 import org.dromara.aihr.domain.AihrInterviewDto.AnswerResponse;
 import org.dromara.aihr.domain.AihrInterviewDto.CandidateLinkRequest;
@@ -310,7 +310,7 @@ public class AihrInterviewService {
     }
 
     private String tenantId() {
-        return firstNonBlank(LoginHelper.getTenantId(), "000000");
+        return firstNonBlank(TenantHelper.getTenantId(), "000000");
     }
 
     private void saveResult(String sessionId, InterviewSession session, ScoreResult score) {
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java
index d95a54e2..bb7ea317 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java
@@ -9,7 +9,7 @@ import org.dromara.aihr.domain.AihrOrgSyncDto.OrgProjectOption;
 import org.dromara.aihr.domain.AihrOrgSyncDto.OrgSnapshotResponse;
 import org.dromara.aihr.domain.AihrOrgSyncDto.SyncRequest;
 import org.dromara.aihr.domain.AihrOrgSyncDto.SyncResponse;
-import org.dromara.common.satoken.utils.LoginHelper;
+import org.dromara.common.tenant.helper.TenantHelper;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.dao.DataAccessException;
 import org.springframework.jdbc.core.JdbcTemplate;
@@ -763,7 +763,7 @@ public class AihrOrgSyncService {
     }
 
     private String tenantId() {
-        String tenantId = LoginHelper.getTenantId();
+        String tenantId = TenantHelper.getTenantId();
         return clean(tenantId).isBlank() ? TENANT_ID : tenantId.trim();
     }
 }
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java
index e689d0b9..b8afaa4c 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java
@@ -47,7 +47,7 @@ import org.dromara.aihr.domain.AihrPracticeDto.TeamMemberResponse;
 import org.dromara.aihr.service.AihrPracticeLlmService.PracticeTurn;
 import org.dromara.aihr.service.AihrPracticeLlmService.DailyDrillAssessment;
 import org.dromara.common.core.exception.ServiceException;
-import org.dromara.common.satoken.utils.LoginHelper;
+import org.dromara.common.tenant.helper.TenantHelper;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.dao.DataAccessException;
@@ -3957,7 +3957,7 @@ public class AihrPracticeSeedService {
     }
 
     private String tenantId() {
-        return firstNonBlank(LoginHelper.getTenantId(), TENANT_ID);
+        return firstNonBlank(TenantHelper.getTenantId(), TENANT_ID);
     }
 
     private String firstNonBlank(String first, String second) {
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantContextContractTest.java b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantContextContractTest.java
new file mode 100644
index 00000000..6f6d3c50
--- /dev/null
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantContextContractTest.java
@@ -0,0 +1,36 @@
+package org.dromara.aihr.service;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@Tag("dev")
+class AihrTenantContextContractTest {
+
+    @Test
+    void businessServicesUseDynamicTenantContext() throws Exception {
+        Path moduleRoot = Path.of("src/main/java/org/dromara/aihr/service");
+        if (!Files.exists(moduleRoot)) {
+            moduleRoot = Path.of("ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service");
+        }
+
+        for (String service : List.of(
+            "AihrCandidateMaterialService.java",
+            "AihrCaseService.java",
+            "AihrDashboardService.java",
+            "AihrInterviewService.java",
+            "AihrOrgSyncService.java",
+            "AihrPracticeSeedService.java"
+        )) {
+            String source = Files.readString(moduleRoot.resolve(service));
+            assertTrue(source.contains("TenantHelper.getTenantId()"), service);
+            assertFalse(source.contains("LoginHelper.getTenantId()"), service);
+        }
+    }
+}
diff --git a/docs/BRD_IMPLEMENTATION_AUDIT.md b/docs/BRD_IMPLEMENTATION_AUDIT.md
index f2163343..750a45de 100644
--- a/docs/BRD_IMPLEMENTATION_AUDIT.md
+++ b/docs/BRD_IMPLEMENTATION_AUDIT.md
@@ -2,6 +2,7 @@
 
 更新时间：2026-07-14
 
+- 2026-07-14 BRD G3 多租户动态上下文修复：候选资料、案例、仪表盘、面试、组织同步和陪练服务此前从 `LoginHelper` 读取租户，后台 `TenantHelper.dynamic(...)` 场景可能回退到 `000000`；现统一改用 `TenantHelper.getTenantId()`，保留案例服务的 `LoginHelper` 仅用于当前操作人身份，并新增源码契约测试与 `demo-check` marker。未修改业务数据；正式多租户环境仍需跨租户 HTTP 回归。
 - 2026-07-14 Figma/BRD 对账口径修正：`FIGMA_IMPLEMENTATION_MATRIX.md` 的 M2 总结此前仍把问答反馈写成视觉缺口；当前员工端问答反馈、状态提示和后端记录已在位，剩余仅为 Figma 画板中的收藏持久化契约与完整视觉状态复核，不把开放问题榜纳入本期。
 - 2026-07-14 最新线上只读资源复核：生产根站、`/h5/` 和 `/prod-api/auth/tenant/list` 均返回 `200`；线上管理端仍加载 `assets/index-CJZ3Ax3Z.js`（SHA-256 `8b9278a26ccb760abce489b12a20b221748c64d4c4153613d2511777bb9677bc`），H5 仍加载 `assets/index-D4-NrEpb.js`（SHA-256 `ab15bfd17cabe58e2f34b0ac61ee198a837128ed85dc6bb0ddf77bc3e22dcd9c`）；当前提交 `0de9704e` 重建后的本地资源为管理端 `assets/index-B9T505HT.js`（SHA-256 `66a827a7b3e5d794ae9da54c6e2276080995614fa52f54d49f746087663f8c94`）和 H5 `assets/index-CDn6TrX8.js`（SHA-256 `eecb4820f3887aceb952efe3e6f2210bab325be8b03f2813e6ec304c68b26f08`），两端仍未发布。本轮仅做 GET/hash 核验，未执行生产静态同步、后端重启或业务数据写入。
 - 2026-07-14 BRD 5.4/G3 组织同步写入保护：`POST /api/aihr/org/sync` 现在要求请求显式传 `dryRun=true` 或 `dryRun=false`，省略请求体或传 `null` 会在外部拉取前直接拒绝，避免空请求因 `replaceExisting=true` 默认值意外写入组织快照；补充服务单测、`demo-check` marker 和 API 对接说明，未修改线上组织数据。
diff --git a/scripts/demo-check.sh b/scripts/demo-check.sh
index 6cabd172..38caa6ac 100755
--- a/scripts/demo-check.sh
+++ b/scripts/demo-check.sh
@@ -444,6 +444,9 @@ contains frontend/src/views/index.vue "不等于端到端验收"
 contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrDashboardService.java "不等于端到端验收"
 contains frontend/src/views/index.vue "正式试点身份待核对"
 contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrDashboardService.java "正式试点身份待核对"
+contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java "TenantHelper.getTenantId()"
+contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java "TenantHelper.getTenantId()"
+contains backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantContextContractTest.java "businessServicesUseDynamicTenantContext"
 contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrDashboardService.java "String traineeExpression = storeDisplayFields"
 contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java "String nameExpression = !storeDisplayFields"
 contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrPracticeSeedService.java "PILOT_SESSION_ROWS_SQL.formatted(storeDisplayFields"