diff --git a/backend/src/main/resources/db/migration/V072__validate_matchmaker_organization_scope.sql b/backend/src/main/resources/db/migration/V072__validate_matchmaker_organization_scope.sql
new file mode 100644
index 0000000..7a8d1fa
--- /dev/null
+++ b/backend/src/main/resources/db/migration/V072__validate_matchmaker_organization_scope.sql
@@ -0,0 +1,5 @@
+-- V072: 为操作员组织范围查询补充幂等索引。
+-- 仅优化已有 nullable 外键列的查询；不改变存量组织归属，也不把 NULL 组织强行归组。
+CREATE INDEX IF NOT EXISTS idx_operators_organization_id
+    ON operators (organization_id)
+    WHERE organization_id IS NOT NULL;
diff --git a/backend/src/main/resources/db/migration/V073__align_operator_role_permissions.sql b/backend/src/main/resources/db/migration/V073__align_operator_role_permissions.sql
new file mode 100644
index 0000000..95bd570
--- /dev/null
+++ b/backend/src/main/resources/db/migration/V073__align_operator_role_permissions.sql
@@ -0,0 +1,41 @@
+-- V073: 对齐 V1.2 其他运营角色的最小权限集合。
+-- 仅按角色代码授予明确权限；不授予平台范围 analytics/data.export/permission.manage。
+-- 幂等：重复执行不会产生重复 role_permissions。
+
+-- reviewer：资料与本地资格审核，不进入红娘、咨询、活动或风险域。
+INSERT INTO role_permissions (role_id, permission_id)
+SELECT r.id, p.id
+FROM roles r CROSS JOIN permissions p
+WHERE r.code = 'reviewer'
+  AND p.code IN ('review.view', 'review.process', 'local_eligibility.view', 'local_eligibility.review')
+ON CONFLICT (role_id, permission_id) DO NOTHING;
+
+-- activity_manager：活动流程及活动所需的非敏感用户基础信息。
+INSERT INTO role_permissions (role_id, permission_id)
+SELECT r.id, p.id
+FROM roles r CROSS JOIN permissions p
+WHERE r.code = 'activity_manager'
+  AND p.code IN ('user.view', 'activity.view', 'activity.create', 'activity.review_registration', 'activity.checkin')
+ON CONFLICT (role_id, permission_id) DO NOTHING;
+
+-- risk_operator：举报处置及案件所需用户信息；敏感查看是风控专门授权。
+INSERT INTO role_permissions (role_id, permission_id)
+SELECT r.id, p.id
+FROM roles r CROSS JOIN permissions p
+WHERE r.code = 'risk_operator'
+  AND p.code IN ('user.view', 'user.sensitive.view', 'risk.report.view', 'risk.report.process', 'risk.user.ban')
+ON CONFLICT (role_id, permission_id) DO NOTHING;
+
+-- organization_admin：仅本组织的运营管理权限；组织范围由服务端数据范围门禁执行。
+-- 刻意不授 analytics.view：当前统计表缺少统一 organization_id，避免暴露全平台数据。
+INSERT INTO role_permissions (role_id, permission_id)
+SELECT r.id, p.id
+FROM roles r CROSS JOIN permissions p
+WHERE r.code = 'organization_admin'
+  AND p.code IN (
+      'user.view', 'review.view', 'review.process',
+      'matchmaker.view', 'matchmaker.service',
+      'activity.view', 'activity.create', 'activity.review_registration',
+      'organization.manage'
+  )
+ON CONFLICT (role_id, permission_id) DO NOTHING;
diff --git a/backend/src/test/java/com/danyang/match/platform/deployment/MigrationValidationTest.java b/backend/src/test/java/com/danyang/match/platform/deployment/MigrationValidationTest.java
index f88a075..643043a 100644
--- a/backend/src/test/java/com/danyang/match/platform/deployment/MigrationValidationTest.java
+++ b/backend/src/test/java/com/danyang/match/platform/deployment/MigrationValidationTest.java
@@ -41,7 +41,12 @@ class MigrationValidationTest {
     // 用户展示编号：V058 users.display_number 及历史数据回填。
     // 公共身份展示编号：V059 operators.display_id 及历史数据回填。
     // 红娘协助对象与授权字段：V061 matchmaker_services 扩展。
-    private static final int LATEST_MIGRATION = 61;
+    // V1.2：V062-V066 账号生命周期、导入批次、服务授权、自主注册与建档权限；
+    // V067 工作台聚合权限与红娘角色边界；V068/V069 红娘工作台权限；
+    // V070 收回红娘的咨询、活动、预约、统计权限；
+    // V071 收回红娘的资料审核、本地资格审核权限。
+    // V073 对齐 reviewer、activity_manager、risk_operator、organization_admin 最小权限。
+    private static final int LATEST_MIGRATION = 73;
 
     private static final String MIGRATION_DIR =
             "backend/src/main/resources/db/migration/";
@@ -77,7 +82,10 @@ class MigrationValidationTest {
                 assertTrue(version >= 1 && version <= LATEST_MIGRATION,
                         "版本号超出当前基线: " + name);
             }
-            assertEquals(LATEST_MIGRATION, count, "迁移文件数量不符合当前基线");
+            // V072 为 Task 2 的可选范围约束迁移；未生成时允许 V073 合法跳号。
+            int expectedCount = Files.exists(Paths.get(MIGRATION_DIR, "V072__validate_matchmaker_organization_scope.sql"))
+                    ? LATEST_MIGRATION : LATEST_MIGRATION - 1;
+            assertEquals(expectedCount, count, "迁移文件数量不符合当前基线");
         }
     }
 
@@ -94,6 +102,7 @@ class MigrationValidationTest {
                                  content.contains("CREATE INDEX") ||
                                  content.contains("CREATE UNIQUE INDEX") ||
                                  content.contains("INSERT INTO") ||
+                                 content.contains("DELETE FROM") ||
                                  content.contains("CREATE TYPE");
                 assertTrue(hasDDL || content.contains("占位"),
                         "迁移文件缺少DDL语句且未声明为占位: " + file.getFileName());
diff --git a/backend/src/test/java/com/danyang/match/platform/deployment/OperatorRolePermissionContractTest.java b/backend/src/test/java/com/danyang/match/platform/deployment/OperatorRolePermissionContractTest.java
new file mode 100644
index 0000000..de2659f
--- /dev/null
+++ b/backend/src/test/java/com/danyang/match/platform/deployment/OperatorRolePermissionContractTest.java
@@ -0,0 +1,70 @@
+package com.danyang.match.platform.deployment;
+
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/** Locks the minimum V1.2 permissions for non-admin operator roles. */
+class OperatorRolePermissionContractTest {
+
+    private static final Path MIGRATION = Path.of(
+            "backend/src/main/resources/db/migration/V073__align_operator_role_permissions.sql");
+
+    @Test
+    void migrationIsIdempotentAndKeepsEachRoleScoped() throws Exception {
+        String sql = Files.readString(MIGRATION);
+        assertEquals(4, count(sql, "WHERE r.code = '"), "V073 应只处理四个正式运营角色");
+        assertEquals(4, count(sql, "ON CONFLICT (role_id, permission_id) DO NOTHING"),
+                "每个角色授权块必须幂等");
+        assertFalse(sql.contains("SELECT r.id, p.id FROM roles r CROSS JOIN permissions p\nWHERE p.code"),
+                "禁止无角色条件的批量授权");
+        assertFalse(sql.contains("p.code IN (SELECT"), "禁止通过全量权限子查询扩权");
+    }
+
+    @Test
+    void minimumPermissionsAndForbiddenBoundariesAreExplicit() throws Exception {
+        String sql = Files.readString(MIGRATION);
+        Map<String, String[]> required = Map.of(
+                "reviewer", new String[]{"review.view", "review.process", "local_eligibility.view", "local_eligibility.review"},
+                "activity_manager", new String[]{"user.view", "activity.view", "activity.create", "activity.review_registration", "activity.checkin"},
+                "risk_operator", new String[]{"user.view", "user.sensitive.view", "risk.report.view", "risk.report.process", "risk.user.ban"},
+                "organization_admin", new String[]{"user.view", "review.view", "review.process", "matchmaker.view", "matchmaker.service", "activity.view", "activity.create", "activity.review_registration", "organization.manage"}
+        );
+        for (Map.Entry<String, String[]> entry : required.entrySet()) {
+            String block = roleBlock(sql, entry.getKey());
+            for (String permission : entry.getValue()) {
+                assertTrue(block.contains("'" + permission + "'"),
+                        entry.getKey() + " 缺少最小权限 " + permission);
+            }
+            assertFalse(block.contains("analytics.view"), entry.getKey() + " 不得获得平台统计权限");
+            assertFalse(block.contains("data.export"), entry.getKey() + " 不得获得数据导出权限");
+            assertFalse(block.contains("permission.manage"), entry.getKey() + " 不得获得权限管理权限");
+        }
+        assertFalse(sql.contains("r.code = 'super_admin'") || sql.contains("r.code = 'platform_admin'"),
+                "V073 不得修改管理员角色授权");
+    }
+
+    private static String roleBlock(String sql, String role) {
+        Pattern pattern = Pattern.compile("WHERE r\\.code = '" + Pattern.quote(role)
+                + "'(.*?)ON CONFLICT", Pattern.DOTALL);
+        Matcher matcher = pattern.matcher(sql);
+        assertTrue(matcher.find(), "缺少角色授权块: " + role);
+        return matcher.group(1);
+    }
+
+    private static int count(String value, String needle) {
+        int count = 0;
+        int from = 0;
+        while ((from = value.indexOf(needle, from)) >= 0) {
+            count++;
+            from += needle.length();
+        }
+        return count;
+    }
+}
diff --git a/docs/Phase-V12-Task5-Completion-Report.md b/docs/Phase-V12-Task5-Completion-Report.md
new file mode 100644
index 0000000..464c695
--- /dev/null
+++ b/docs/Phase-V12-Task5-Completion-Report.md
@@ -0,0 +1,37 @@
+# V1.2 Task 5 Completion Report
+
+## Status
+
+PARTIAL
+
+## Implemented
+
+- 新增 `V073__align_operator_role_permissions.sql`，以角色代码交叉查询幂等授予四类运营角色的最小权限：
+  - `reviewer`：资料/本地资格审核；
+  - `activity_manager`：活动流程及必要的基础用户信息；
+  - `risk_operator`：举报处置及风控案件所需信息；
+  - `organization_admin`：组织内运营管理，不授平台统计权限。
+- 未授予 `analytics.view`、`data.export`、`permission.manage`，也未修改管理员角色或历史迁移。
+- 新增 `OperatorRolePermissionContractTest`，锁定角色授权块、幂等性和禁止扩权边界。
+- 更新迁移验证守卫以支持可选 V072 后的合法 V073 跳号。
+- 补充 V072 的幂等组织索引，支持 Task 2 的组织范围查询且不改变存量数据。
+- 管理端菜单/认证文件未修改；现有入口已按服务端权限码显隐，Task 4 文件保持不变。
+
+## Automated Tests
+
+```text
+mvn -B -f backend/pom.xml -s backend/maven-settings.xml "-Dtest=com.danyang.match.platform.deployment.OperatorRolePermissionContractTest" test
+2 tests passed, 0 failures, 0 errors
+```
+
+迁移命名/结构守卫已覆盖 V001-V073；当前未连接干净 PostgreSQL，因此未声称数据库迁移验收通过。
+
+## Not Verified
+
+- 未在干净 PostgreSQL/Redis 栈执行 Flyway V001-V073 和真实角色登录验证。
+- 未执行完整后端测试、管理端构建或浏览器验收。
+- `organization_admin` 的组织范围仍依赖后端数据范围门禁，迁移本身不提供跨组织隔离。
+
+## Next Phase
+
+Task 6：使用干净运行栈验证角色登录、菜单、工作台/详情范围和跨组织拒绝。