diff --git a/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkBridge.kt b/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkBridge.kt
index 16cd787..eb6f337 100644
--- a/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkBridge.kt
+++ b/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkBridge.kt
@@ -208,12 +208,17 @@ class AbsdkBridge internal constructor(
     private inline fun <T> withActiveSession(
         profileId: ProviderProfileId,
         block: () -> DomainResult<T>,
-    ): DomainResult<T> = if (hasActiveSession(profileId)) {
-        block()
-    } else {
-        DomainResult.Failure(
-            DomainError.TokenInvalid(detail = "No active ABSDK session for this provider"),
-        )
+    ): DomainResult<T> {
+        if (!hasActiveSession(profileId)) {
+            return DomainResult.Failure(
+                DomainError.TokenInvalid(detail = "No active ABSDK session for this provider"),
+            )
+        }
+        return block().also { result ->
+            if (result is DomainResult.Failure && result.error is DomainError.TokenInvalid) {
+                activeSession.value = null
+            }
+        }
     }
 
     private fun hasActiveSession(profileId: ProviderProfileId): Boolean =
@@ -299,10 +304,16 @@ class AbsdkBridge internal constructor(
         private const val DISABLED_STATUS = "0"
         private const val ENABLED_STATUS = "1"
 
-        fun create(): AbsdkBridge = AbsdkBridge(
-            client = VendorAbsdkClient.create(),
-            dispatcher = Dispatchers.IO,
-        )
+        @OptIn(CleartextAbsdkTransport::class)
+        private val processInstance: AbsdkBridge by lazy(LazyThreadSafetyMode.SYNCHRONIZED) {
+            AbsdkBridge(
+                client = VendorAbsdkClient.create(),
+                dispatcher = Dispatchers.IO,
+            )
+        }
+
+        @CleartextAbsdkTransport
+        fun create(): AbsdkBridge = processInstance
     }
 }
 
diff --git a/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/CleartextAbsdkTransport.kt b/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/CleartextAbsdkTransport.kt
new file mode 100644
index 0000000..9cd8dcd
--- /dev/null
+++ b/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/CleartextAbsdkTransport.kt
@@ -0,0 +1,22 @@
+package com.flagship.abox.manager.absdk.bridge
+
+/**
+ * Marks construction of the original ABSDK 0630 client, whose base endpoint is hardcoded to HTTP.
+ *
+ * Opting in acknowledges that transport confidentiality and integrity are not provided by the
+ * vendor JAR. App integration must remain disabled until the deployment has an approved transport
+ * control and the security limitation is presented to the responsible integrator.
+ */
+@RequiresOptIn(
+    message = "ABSDK 0630 uses a hardcoded cleartext HTTP transport. " +
+        "Do not enable it without an approved transport control.",
+    level = RequiresOptIn.Level.ERROR,
+)
+@Retention(AnnotationRetention.BINARY)
+@Target(
+    AnnotationTarget.CLASS,
+    AnnotationTarget.CONSTRUCTOR,
+    AnnotationTarget.FUNCTION,
+    AnnotationTarget.PROPERTY,
+)
+annotation class CleartextAbsdkTransport
diff --git a/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/VendorAbsdkClient.kt b/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/VendorAbsdkClient.kt
index 4abdb2f..081106d 100644
--- a/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/VendorAbsdkClient.kt
+++ b/absdk-bridge/src/main/kotlin/com/flagship/abox/manager/absdk/bridge/VendorAbsdkClient.kt
@@ -4,6 +4,7 @@ import com.dhc.absdk.ABRet
 import com.dhc.absdk.ABSDK
 import com.dhc.absdk.IrInfo
 
+@CleartextAbsdkTransport
 internal class VendorAbsdkClient private constructor(
     private val sdk: ABSDK,
 ) : AbsdkClient {
diff --git a/absdk-bridge/src/test/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkFactoryTest.kt b/absdk-bridge/src/test/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkFactoryTest.kt
new file mode 100644
index 0000000..05bbd41
--- /dev/null
+++ b/absdk-bridge/src/test/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkFactoryTest.kt
@@ -0,0 +1,12 @@
+package com.flagship.abox.manager.absdk.bridge
+
+import org.junit.Assert.assertSame
+import org.junit.Test
+
+@OptIn(CleartextAbsdkTransport::class)
+class AbsdkFactoryTest {
+    @Test
+    fun productionFactoryReturnsOneProcessInstance() {
+        assertSame(AbsdkBridge.create(), AbsdkBridge.create())
+    }
+}
diff --git a/absdk-bridge/src/test/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkSessionBridgeTest.kt b/absdk-bridge/src/test/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkSessionBridgeTest.kt
index 294b264..182f692 100644
--- a/absdk-bridge/src/test/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkSessionBridgeTest.kt
+++ b/absdk-bridge/src/test/kotlin/com/flagship/abox/manager/absdk/bridge/AbsdkSessionBridgeTest.kt
@@ -91,6 +91,25 @@ class AbsdkSessionBridgeTest {
         assertNull(bridge.observeSession(profile).first())
     }
 
+    @Test
+    fun deviceTokenErrorClearsSessionAndBlocksFurtherCalls() = runTest {
+        val client = ScriptedAbsdkClient().apply {
+            socketStatusResponses = ArrayDeque(
+                listOf(ScriptedAbsdkClient.failure("10002", "expired")),
+            )
+        }
+        val bridge = bridge(client)
+        bridge.login(profile, credentials)
+
+        val first = bridge.getStatus(profile, DeviceName("socket"))
+
+        assertTrue((first as DomainResult.Failure).error is DomainError.TokenInvalid)
+        assertNull(bridge.observeSession(profile).first())
+        val second = bridge.getStatus(profile, DeviceName("socket"))
+        assertTrue((second as DomainResult.Failure).error is DomainError.TokenInvalid)
+        assertEquals(listOf("login:demo", "socket-status:socket"), client.calls)
+    }
+
     private fun bridge(client: ScriptedAbsdkClient): AbsdkBridge =
         AbsdkBridge(client, Dispatchers.Unconfined)
 }
diff --git a/docs/architecture.md b/docs/architecture.md
index 83ce72a..c00b4c7 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -102,9 +102,11 @@ Fake 只用于开发和测试，不能作为真实 ABox 或真实硬件验收证
 - 不提供设备目录；
 - 不调用未确认的 `setHostInfo`；
 - logout 只清除 Bridge 本地会话，因为 JAR 没有公开 logout 或 Token setter；
+- 生产工厂始终返回进程内同一个 Bridge，使互斥锁和本地会话与厂商单例保持一致；
+- 真实工厂标记为 `@CleartextAbsdkTransport`，调用方必须显式 opt-in 承认厂商 JAR 的硬编码 HTTP 风险；
 - 当前直接引用归档 Sample 目录中的唯一一份 JAR，不复制厂商二进制。
 
-Bridge 本轮尚未加入 `android/app` 依赖，App debug 仍绑定 Fake。提供方选择、安全凭据和真实 Bridge 绑定由后续 `feat/provider-login` 完成。协议证据与限制记录在 `docs/protocol/absdk-0630.md`。
+Bridge 本轮尚未加入 `android/app` 依赖，App debug 仍绑定 Fake。提供方选择、安全凭据和真实 Bridge 绑定由后续 `feat/provider-login` 完成；在获批的传输控制方案明确前，不得在 App 中启用真实 Bridge。协议证据与限制记录在 `docs/protocol/absdk-0630.md`。
 
 ## 9. 后续边界
 
diff --git a/docs/protocol/absdk-0630.md b/docs/protocol/absdk-0630.md
index 107335e..6ae46c1 100644
--- a/docs/protocol/absdk-0630.md
+++ b/docs/protocol/absdk-0630.md
@@ -108,6 +108,8 @@ commons-logging-1.1.3.jar
 
 JAR 内含宽松的 TLS 信任实现。正式产品不得把这一历史传输行为扩展为 App 其他网络请求的安全策略，也不得记录密码、Token、API Key 或敏感红外载荷。
 
+真实 Bridge 工厂使用 `@CleartextAbsdkTransport` 作为编译期 opt-in 门禁，并且当前没有接入 Android App。该标记只防止误接入，不会为链路提供加密。生产集成前必须确定并批准 HTTPS、受控加密代理或其他能够提供机密性与完整性的传输控制；在此之前不得启用真实 ABox 入口。
+
 ## 6. `setHostInfo` 的已确认行为
 
 `setHostInfo(url, hotelName, roomNo, apikey)` 向以下端点发送初始化请求：