diff --git a/modules/backend-persistence/src/test/java/com/idea2strategy/backend/persistence/delegation/DelegationDisclosurePolicyMigrationIntegrationTest.java b/modules/backend-persistence/src/test/java/com/idea2strategy/backend/persistence/delegation/DelegationDisclosurePolicyMigrationIntegrationTest.java
new file mode 100644
index 00000000..9a3b4304
--- /dev/null
+++ b/modules/backend-persistence/src/test/java/com/idea2strategy/backend/persistence/delegation/DelegationDisclosurePolicyMigrationIntegrationTest.java
@@ -0,0 +1,108 @@
+package com.idea2strategy.backend.persistence.delegation;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.List;
+import java.util.Map;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+import org.testcontainers.containers.PostgreSQLContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+
+/**
+ * Guards the disclosure a delegation is required to point at.
+ *
+ * <p>`identity.delegated_authorizations.disclosure_policy_document_id` is NOT NULL, so this
+ * document is not decoration: if the policy code resolves to nothing, delegation does not degrade,
+ * it stops. Both ways that has already happened are pinned here.
+ *
+ * <p>Publishing v2 with a future `published_at` retired v1 while v2 was not yet selectable and left
+ * the code with zero current documents — every grant failed. And publishing the disclosure as
+ * `is_required` put it in the set every account must consent to before it can finish
+ * authenticating, which blocked login for customers who never delegate anything. Neither failure
+ * is visible in the migration file being reviewed; both are visible here.
+ */
+@Testcontainers(disabledWithoutDocker = true)
+@SpringBootTest(classes = DelegationDisclosurePolicyMigrationIntegrationTest.TestApplication.class)
+class DelegationDisclosurePolicyMigrationIntegrationTest {
+    private static final String POLICY_CODE = "delegation.strategy-edit.disclosure";
+
+    @Container
+    static final PostgreSQLContainer POSTGRES = new PostgreSQLContainer("postgres:16-alpine");
+
+    @DynamicPropertySource
+    static void databaseProperties(DynamicPropertyRegistry registry) {
+        registry.add("spring.datasource.url", POSTGRES::getJdbcUrl);
+        registry.add("spring.datasource.username", POSTGRES::getUsername);
+        registry.add("spring.datasource.password", POSTGRES::getPassword);
+        registry.add("spring.jpa.hibernate.ddl-auto", () -> "none");
+        registry.add("spring.flyway.enabled", () -> "true");
+    }
+
+    @Autowired
+    private JdbcTemplate jdbc;
+
+    @Test
+    void resolvesToExactlyOneCurrentDocument() {
+        List<Map<String, Object>> current = jdbc.queryForList(
+                "select version, is_required from identity.policy_documents "
+                        + "where policy_code = ? and retired_at is null and published_at <= now()",
+                POLICY_CODE);
+
+        assertThat(current)
+                .describedAs("a delegation cannot be granted without a current disclosure")
+                .hasSize(1);
+    }
+
+    /**
+     * Consent to this document is asked for when a delegation is granted. Requiring it would make
+     * every customer answer for a feature most of them never use, before they can log in.
+     */
+    @Test
+    void isNeverPartOfTheRequiredConsentSet() {
+        Boolean required = jdbc.queryForObject(
+                "select bool_or(is_required) from identity.policy_documents where policy_code = ?",
+                Boolean.class,
+                POLICY_CODE);
+
+        assertThat(required).isFalse();
+    }
+
+    /** The hash is what a later reader trusts to tell whether the text changed underneath them. */
+    @Test
+    void storesAHashThatMatchesTheStoredText() {
+        Boolean matches = jdbc.queryForObject(
+                "select bool_and(content_hash = encode(sha256(convert_to(content_text, 'UTF8')), 'hex')) "
+                        + "from identity.policy_documents where policy_code = ?",
+                Boolean.class,
+                POLICY_CODE);
+
+        assertThat(matches).isTrue();
+    }
+
+    /**
+     * The delegation can create trade containers, not only edit blocks inside one the customer
+     * already shaped. A disclosure that omits that understates what is being delegated, which is
+     * the single thing this document exists to prevent.
+     */
+    @Test
+    void tellsTheCustomerTheToolCanBuildTheStrategyItself() {
+        String text = jdbc.queryForObject(
+                "select content_text from identity.policy_documents "
+                        + "where policy_code = ? and retired_at is null and published_at <= now()",
+                String.class,
+                POLICY_CODE);
+
+        assertThat(text).contains("컨테이너");
+        assertThat(text).contains("주문", "출시");
+    }
+
+    @SpringBootApplication
+    static class TestApplication {}
+}