diff --git a/docs/answer-delivery-v2.md b/docs/answer-delivery-v2.md
index 05dd74c..30e6a61 100644
--- a/docs/answer-delivery-v2.md
+++ b/docs/answer-delivery-v2.md
@@ -7,6 +7,11 @@
 依赖：TASK_1《consumer-access-v3.md》的 `FormConsumerAccessService`（owner/read/subscribe 与
 `grantVersion`）是唯一授权事实源；本契约不写第二套 ACL，只消费它。
 
+**现行主链（2026-10-22 决策，10-23 复核）**：SH 以签名收据 + HTTP 确认建件，不依赖 MQ 快照
+投递行、broker confirm 或 MQ 消费成功；`requireRead + requireSubscribe` 仍是可信上下文的授权前提。
+下文 outbox/MQ 章节描述可选推送通道，不能据此把 MQ 重新设为建件必选项。
+MQ 隔离、`push_allowed` 全量契约与投递状态覆盖修复另案交付，不能由本轮 FL 门禁变绿推定已完成。
+
 ---
 
 ## 1. 协议版本差额（先说清"新增了什么、旧的那条怎么算"）
@@ -116,7 +121,7 @@ SH POST /api/apply/intents（body 只有 siteCode/itemCode/clientKey）
   └ POST /api/form/hosted/submit（body 同 /api/form/submit + contextToken）
       FC 在答卷事务内：redeem（存在→未过期→会话用户=断言填报人→会话校=上下文租户域，
       错人/错校/过期/不存在一律拒）→ 坐标逐字核对 → 落答卷(answer_revision=1)
-      → 原子关联 submission_context.answer_uuid（uk 双向唯一）→ 同事务写 outbox
+      → 原子关联 submission_context.answer_uuid（uk 双向唯一）→ 满足推送条件的消费方才同事务写 outbox
       → 同 token 同幂等键=原答卷重放；换幂等键重用=拒绝
   └ 成功只 postMessage {proto:"fc",v:1,type:"success",hosted:true} 给**服务端锁定的精确 origin**
      （不带 answerId、不带版本号；referrer 回落与同 hostname 降级都不可用）
@@ -205,6 +210,19 @@ v2 快照带完整值文档，"能连上 broker 的任何人可见"是不可接
 关键取舍：**不靠异常类型猜"远端有没有受理"**。查到 30/40 只回填镜像状态、**绝不重发 apply**
 （重发会命中中心 R4 重启，把已拒绝/已撤回的件重新跑起来）；只有查无才用同一 `requestToken` 补发。
 
+### 7.3a flow-center 管理面绑定失败（2026-10-23 R2/R1）
+
+关联表单的流程定义必须绑定 `formUuid + formVersion`；保存显式关联、发布与启用都按
+`schema?schId=&uuid=&version=` 核验同一明确发布版本。UUID-only 定义没有长期回退，缺版本必须重新选择。
+独立无表单流程保留；孤立版本号拒绝。FC 精确 schema 只允许已发布过的版本（`publish_time != null`），
+拒绝草稿；历史发布版不要求是 currentVersion，也不改变历史答卷读取路径。
+
+FL 信封稳定码：`46101 VERSION_REQUIRED`、`46102 INVALID_COORDINATE`、
+`46103 SCHEMA_UNAVAILABLE`（可重试）、`46104 SCHEMA_CONTRACT_VIOLATION`、
+`46105 RESOURCE_UNAVAILABLE`、`46106 ACCESS_DENIED`。除 46103 外均不能盲目重试。
+FC schema 业务码 2 将不存在/不可读/未发布统一拒绝，FL 映射为 46105，不按文案探测资源存在性。
+详见 [FL 精确版本契约](../../../flow-center/service/docs/form-binding-contract.md)。
+
 ### 7.4 flow-center 发起守卫分支（`FlowApplyRetryModels.ApplyResultV2.branch`，稳定码）
 
 | 码 | 判据 | 是否重启流程 |
diff --git a/src/main/java/com/yunhai/formcenter/service/OapiFormService.java b/src/main/java/com/yunhai/formcenter/service/OapiFormService.java
index fddf611..3afd40d 100644
--- a/src/main/java/com/yunhai/formcenter/service/OapiFormService.java
+++ b/src/main/java/com/yunhai/formcenter/service/OapiFormService.java
@@ -82,6 +82,11 @@ public class OapiFormService {
         }
         requireSchId(schId);
         FormDefService.Published published = defService.resolvePublishedByUuid(schId, uuid, version);
+        // 精确 schema 用于跨端发布绑定，只允许发布过的不可变版本；不能把草稿签成发布契约。
+        // 历史答卷读取仍使用既有 resolver，不在此处收紧其生命周期语义。
+        if (version != null && (version < 1 || published.versionRow().getPublishTime() == null)) {
+            throw new BizException(ErrorCode.PARAM_ERROR, "指定发布版本不存在或不可读");
+        }
         return toSchemaView(published);
     }
 
diff --git a/src/test/java/com/yunhai/formcenter/service/OapiSchemaPublishedVersionTest.java b/src/test/java/com/yunhai/formcenter/service/OapiSchemaPublishedVersionTest.java
new file mode 100644
index 0000000..0b82d2c
--- /dev/null
+++ b/src/test/java/com/yunhai/formcenter/service/OapiSchemaPublishedVersionTest.java
@@ -0,0 +1,84 @@
+package com.yunhai.formcenter.service;
+
+import com.yunhai.formcenter.entity.Form;
+import com.yunhai.formcenter.entity.FormVersion;
+import com.yunhai.formcenter.model.FormAccessModels.ConsumerPrincipal;
+import com.yunhai.formcenter.repository.AnswerRepository;
+import com.yunhai.formcenter.repository.FormRepository;
+import com.yunhai.platform.apistd.BizException;
+import com.yunhai.platform.utils.exception.ErrorCode;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDateTime;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.*;
+
+/** 真实服务层发布版本守卫单测；resolver/仓储是桩，不作为真库验收。 */
+class OapiSchemaPublishedVersionTest {
+    private FormDefService defs;
+    private FormDictService dicts;
+    private FormConsumerAccessService access;
+    private OapiFormService service;
+    private Form form;
+    private FormVersion row;
+    private final ConsumerPrincipal caller = new ConsumerPrincipal("100009");
+
+    @BeforeEach
+    void setUp() {
+        defs = mock(FormDefService.class);
+        dicts = mock(FormDictService.class);
+        access = mock(FormConsumerAccessService.class);
+        service = new OapiFormService(defs, dicts, mock(AnswerRepository.class), mock(FormRepository.class), access);
+        form = new Form();
+        form.setSchId(27L);
+        form.setUuid("FU1");
+        form.setAppCode("svc-hall");
+        form.setCode("leave");
+        row = new FormVersion();
+        row.setVersion(3);
+        row.setSchemaJson("{\"groups\":[]}");
+        when(defs.resolvePublishedByUuid(27L, "FU1", 3)).thenReturn(new FormDefService.Published(form, row));
+        when(dicts.expandSchema(anyLong(), anyString())).thenAnswer(inv -> inv.getArgument(1));
+    }
+
+    @Test
+    void exactDraftCannotBecomeCrossServicePublishedContract() {
+        BizException ex = assertThrows(BizException.class,
+                () -> service.schema(caller, 27L, null, null, "FU1", 3));
+        assertEquals(ErrorCode.PARAM_ERROR.getCode(), ex.getErrorCode().getCode());
+        verify(access).requireRead(caller, 27L, "FU1");
+        verifyNoInteractions(dicts);
+    }
+
+    @Test
+    void historicalPublishedVersionStillReadableWhenHeadIsDisabledOrDeleted() {
+        row.setPublishTime(LocalDateTime.now().minusDays(1));
+        form.setStatus(2);
+        form.setIsDeleted(1);
+        form.setCurrentVersion(4);
+        assertEquals(3, service.schema(caller, 27L, null, null, "FU1", 3).getVersion());
+        verify(defs).resolvePublishedByUuid(27L, "FU1", 3);
+    }
+
+    @Test
+    void missingVersionRowPreservesResourceRejectionCode() {
+        when(defs.resolvePublishedByUuid(27L, "FU1", 3))
+                .thenThrow(new BizException(ErrorCode.PARAM_ERROR, "opaque"));
+        BizException ex = assertThrows(BizException.class,
+                () -> service.schema(caller, 27L, null, null, "FU1", 3));
+        assertEquals(2, ex.getErrorCode().getCode());
+        verifyNoInteractions(dicts);
+    }
+
+    @Test
+    void readAuthorizationRunsBeforeVersionResolution() {
+        doThrow(new BizException(ErrorCode.PARAM_ERROR, "opaque"))
+                .when(access).requireRead(caller, 27L, "FU1");
+        assertThrows(BizException.class, () -> service.schema(caller, 27L, null, null, "FU1", 3));
+        verifyNoInteractions(defs, dicts);
+    }
+}