feat: distribute credentials in worker snapshots

README.md

@@ -44,12 +44,12 @@ Proxy Pool 用 Controller 协调这些变化，并让 Gateway 数据面只消费
 - **Gateway 组件**：HTTP 正向代理、HTTPS CONNECT、双向 Tunnel、重试、超时、
   目的地址保护、本地快照存储、容量调度和 Worker 控制面 Register/Watch/ACK/
   Runtime 会话组件已有实现与定向测试。`SessionSupervisor` 会为可恢复控制面中断执行
-  有界退避重连。Controller 可向 Worker 下发无凭据引用的已归属 Proxy 及 Gateway
+有界退避重连。Controller 可向 Worker 下发已归属 Proxy、Gateway Routing 与按引用去重的
-  Routing 快照。Gateway 会将 Routing 与 Proxy 原子编译为同一内存 View，并只按当前未过期
+凭据材料快照。Gateway 会将 Routing、Proxy 与凭据原子编译为同一内存 View，并只按当前未过期
   View 匹配请求，并在内存中按 Sequential、Random、Round Robin、Weighted 或 Least
   Connections 选择上游。无候选时支持 reject、受 `waitTimeout` 限制的本地容量等待，
   以及仍经过目标地址策略的 direct；`proxy-gateway` 通过独立控制面拨号地址维护
-  Session，并仅在持有未过期 Snapshot 时 Ready；凭据分发仍待装配。
+  Session，并仅在持有未过期 Snapshot 时 Ready；凭据材料只保留在当前节点内存 View。
 - **安全边界**：Gateway、Distribution 与 Admin 使用各自的认证语义，并支持
   CIDR、可信代理、严格请求解析和敏感信息最小化。
 
@@ -78,7 +78,7 @@ flowchart LR
 
 ## 当前完成度
 
-截至 **2026-07-31**，实施计划检查项为 **54 / 74（73.0%）**。详情见
+截至 **2026-07-31**，实施计划检查项为 **55 / 74（74.3%）**。详情见
 [实施计划](docs/development/implementation-plan.md)和
 [交付完成度审计](docs/requirements/completion-audit.md)。
 
@@ -86,9 +86,9 @@ flowchart LR
   提取与限流、Controller 的 Admin/Distribution/Metrics 监听，以及 PostgreSQL
   管理状态；WorkerControlPlane 的 Register、Snapshot ACK、Runtime 心跳接收和
   Redis 会话栅栏。
-- **部分完成**：Gateway 的带凭据 Proxy 分发与 Outcome 上报、Checker 调度与健康状态链、
+- **部分完成**：Gateway Outcome 上报、Checker 调度与健康状态链、Docker Compose/
-  Docker Compose/Kubernetes 运行时 mTLS Overlay，以及 protobuf 契约。
+  Kubernetes 运行时 mTLS Overlay，以及 protobuf 契约。
-- **待完成**：带凭据 Proxy 分发、Outcome 上报、Checker 调度与健康状态链，
+- **待完成**：Outcome 上报、Checker 调度与健康状态链，
   以及 loadgen 和代表性集群压测。
 
 检查项数量不等于生产就绪度。静态部署清单与 protobuf descriptor 验证也不代表
@@ -185,8 +185,8 @@ Snapshot 时 `/readyz` 返回 `503`。Checker 与 loadgen 命令尚未实现。
   ownership 索引，以及 Gateway 快照客户端。
 - **P0 - Checker 健康链**：Checker 调度、实际探测、Observation reducer，以及
   `FETCHED -> AVAILABLE / SUSPECT / UNHEALTHY` 状态链。
-- **P1 - Gateway 与 Routing**：Gateway 进程、五种 Routing 策略与
+- **P1 - Gateway 与 Routing**：Gateway 进程、快照凭据分发、五种 Routing 策略与
-  `onUnavailable` 已接入；带凭据 Proxy 分发、动态容量调整和 Drain 闭环待完成。
+  `onUnavailable` 已接入；动态容量调整和 Drain 闭环待完成。
 - **P1 - 可观测与部署**：低基数业务指标、完整 Compose/Kubernetes 进程拓扑，
   以及故障转移和恢复演练。
 - **P2 - 容量证明**：`proxy-loadgen`、HTTP/CONNECT/Extract 分场景压测，以及

api/proto/controlplane/v1/controlplane.proto

@@ -64,6 +64,16 @@ message WorkerSnapshot {
   bytes checksum = 5;
   repeated RoutingRule routing = 6;
   repeated OwnedProxy proxies = 7;
+  // Credential materials are protected by the WorkerControlPlane mTLS session
+  // and retained only in the Gateway's current in-memory snapshot view.
+  repeated SnapshotCredential credentials = 14;
+}
+
+message SnapshotCredential {
+  string secret_ref = 1;
+  string credential_version = 2;
+  string username = 3;
+  string password = 4;
 }
 
 message SnapshotDelta {

docs/adr/005-redis-activity-pool.md

@@ -235,9 +235,9 @@ Provider Parser 继续通过 `credentials.Store` 生成 `SecretRef` 和
 在活动池状态提交之前。Distribution 所需凭据只保存在 Proxy 硬 TTL 和幂等 TTL
 约束内，Extract 脚本可原子保存完整重放响应。
 
-Gateway Snapshot 继续只携带凭据引用；Gateway 通过控制面下发到节点内存的
+Gateway Snapshot 携带凭据引用及按引用去重的材料；材料只经 mTLS 控制面进入
-凭据材料解析引用，不在请求热路径查询 Redis。凭据分发与轮换属于独立后续
+Gateway 当前内存 View，不在请求热路径查询 Redis，也不进入 PostgreSQL。凭据轮换的
-实现，不改变本 ADR 的活动池边界。
+主动推送仍属于后续实现，不改变本 ADR 的活动池边界。
 
 ### 库存真值
 

docs/api/control-plane.md

@@ -27,8 +27,9 @@ Controller 已实现并验证 `RegisterWorker`、`AcknowledgeSnapshot` 和
 
 `WatchSnapshots` 已在 Register 后发送与当前 ownership epoch 对应的基础完整快照，
 Gateway 校验后 ACK 并开始 Runtime 心跳。Controller 会从 Redis 的有界 Worker ownership
-索引构建无凭据引用的已归属 Proxy 内容，并将租约到期收紧到 Proxy 的
+索引构建已归属 Proxy 内容，并将租约到期收紧到 Proxy 的 `usable_until`。Proxy 引用的
-`usable_until`；带凭据 Proxy 会 fail-closed，直到凭据材料分发完成。完整 Snapshot
+凭据材料按 `secret_ref + credential_version` 去重，随完整 Snapshot 经 mTLS 下发，仅保留在
+Gateway 当前内存 View。完整 Snapshot
 已从配置原始顺序和 Admin 当前状态合成 Gateway Routing，并与 Proxy 一起纳入 checksum；
 Gateway 已将该 payload 编译并原子发布到与 Proxy 相同版本的本地 View，动态 Router 只匹配
 当前未过期 View；派发器已按五种策略从该 View 选择上游，且在 Proxy 容量耗尽时只在该
@@ -36,7 +37,7 @@ View 的其余候选中回退。`wait_timeout` 随 `on_unavailable=WAIT` 下发
 本地容量等待使用；`DIRECT` 仍先经过 TargetPolicy 再建立 HTTP/CONNECT 直连。`proxy-gateway`
 已装配 Register/Watch/ACK/Runtime 会话、HTTP 代理监听和 Snapshot 就绪探针；控制面中断时
 保持进程运行并以有界退避重连，未取得有效 Snapshot 的 Worker 不会 Ready。增量、带凭据
-Proxy 分发、Outcome 与 Checker 闭环尚未实现。`ReportOutcomes` 仍明确返回 `Unimplemented`；
+Outcome 与 Checker 闭环尚未实现。`ReportOutcomes` 仍明确返回 `Unimplemented`；
 `100,000 QPS` 仍是未验证的设计目标。
 
 `WatchSnapshots` 建立时校验当前 session；每次签发快照引用时也把 `session_id`
@@ -164,7 +165,8 @@ Routing 决定 AVAILABLE、SUSPECT 或 UNHEALTHY，并更新 Redis 活动池，
 
 集群环境使用 mTLS，证书身份绑定 Worker/Checker 类型和环境。服务端校验
 消息中的逻辑 ID 与证书授权一致，设置单消息大小、流持续时间、并发 Stream
-和上报批次上限。`secret_ref` 是受控引用，不在 Proto 中传播真实密码。
+和上报批次上限。`secret_ref` 是受控引用；完整 Snapshot 的 `credentials` 在 mTLS 会话中
+携带引用对应材料，Controller 和 Gateway 仅在内存处理，禁止写入 Redis/PostgreSQL、日志或指标。
 
 ## 9. Gateway 启动参数
 

docs/development/implementation-plan.md

@@ -214,8 +214,8 @@ WorkerControlPlane 现已接入 Controller 生命周期：Register、ACK 和 Run
 身份、消息/流限制和有界停机已实现。`WatchSnapshots` 会发送当前 epoch 的基础完整
 Snapshot 并保持连接；Gateway 已具备 Register/Watch/ACK/Runtime 会话协调组件与
 `proxy-gateway` 进程装配。
-按 Worker 的可下发 ownership 索引已进入 Redis 原子脚本，并可构建无凭据引用的
+按 Worker 的可下发 ownership 索引已进入 Redis 原子脚本，并可构建已归属 Proxy、
-已归属 Proxy payload。Snapshot 签发与 session 匹配在同一 Redis Lua 操作中完成，
+去重凭据材料和 Routing 的完整 payload。Snapshot 签发与 session 匹配在同一 Redis Lua 操作中完成，
 重注册会清除旧引用，避免迟到 Stream 覆盖新 session。Worker 服务端会在最近完整
 Snapshot 的 `valid_until` 到达时结束流；公用 `SessionSupervisor` 已为 Gateway 调用方
 提供可恢复错误的有界指数退避重连，并在参数/认证/协议错误时停止。Gateway Routing
@@ -223,7 +223,7 @@ payload 已按配置顺序和 Admin revision/current 状态发布并覆盖 check
 Proxy 原子编译为同版本 View，动态 Router 只匹配该未过期 View。派发器的五种上游选择已
 接入该 View，并在容量耗尽时在同版本候选中回退；`onUnavailable` 的 reject、wait 与 direct
 已接入 Gateway；`proxy-gateway` 已装配本地 HTTP/Metrics 监听、快照就绪探针和
-控制面重连，凭据分发与 Outcome 上报仍未实现。
+控制面重连与快照凭据分发，Outcome 上报仍未实现。
 
 已新增公用 `domain/activitypool` 契约及并发安全内存参考实现，Provider
 Reconciler 通过 `UpsertFetched` 写入带供应商 TTL 和分配安全余量的批次；已覆盖
@@ -260,7 +260,7 @@ Controller 多副本共享同一计数。Client 身份只以 SHA-256 摘要进
 原子回收历史字段；Redis 异常 fail-closed 并返回 503，真实额度耗尽返回 429。
 Gateway 请求热路径仍只使用本地准入，不增加 Redis/PostgreSQL 调用。
 WorkerControlPlane gRPC 接收端、session 签发/心跳、Snapshot ACK 账本、基础
-Snapshot 流和 Gateway 会话客户端已完成；权威 Proxy/Routing 发布、凭据分发、
+Snapshot 流、Gateway 会话客户端与快照凭据分发已完成；权威 Proxy/Routing 发布、
 Outcome 和健康执行链仍待完成，因此 Task 10 尚未全部完成。
 
 ## Task 11: Checker and Health Reducer

docs/requirements/completion-audit.md

@@ -53,9 +53,10 @@
   服务端 TTL，负向 ACK 会关闭 Runtime 写入栅栏。Controller 已装配 loopback
   plaintext fixture 与 SPIFFE mTLS 服务端；基础 Snapshot 流和 Gateway 的
   Register/Watch/ACK/Runtime 会话协调已实现。Redis 以 Worker 可下发 ownership
-  索引构建无凭据引用的已归属 Proxy payload，并以租约收紧可用期；Gateway Routing
+索引构建已归属 Proxy payload，并以租约收紧可用期；凭据材料按引用去重并与 Proxy/
-  payload 已由配置顺序和 Admin 当前状态合成并覆盖 Snapshot checksum，其运行时消费、
+Routing 一起纳入 Snapshot checksum，仅在 mTLS 和 Gateway 当前内存 View 中处理。Gateway
-  凭据分发、Outcome 和 Checker 尚未闭环。Snapshot 签发在 Redis 中原子匹配当前
+Routing payload 已由配置顺序和 Admin 当前状态合成并覆盖 Snapshot checksum，其运行时消费、
+Outcome 和 Checker 尚未闭环。Snapshot 签发在 Redis 中原子匹配当前
   `session_id`，重注册会清除旧引用，迟到旧 Stream 不会覆盖新 session。Controller
   在最近成功下发的 Snapshot `valid_until` 到达时关闭流；Gateway 的公用
   `SessionSupervisor` 已实现可恢复错误的有界退避重连。Gateway 会校验并执行 Snapshot
@@ -101,9 +102,9 @@ CI 已配置 Linux race job。PostgreSQL 18 和 Redis 8.2 的隔离 Adapter fixt
 5. Worker Register/ACK/Runtime gRPC 接收路径、Redis 服务端 TTL 会话生命周期、
    SPIFFE mTLS 校验和 Controller 生命周期接线已完成；Redis Provider Leader、
    分布式请求额度、Distribution Client 限制和 Provider 状态丢失重建已完成。
-6. Worker 基础网络快照流、无凭据引用 Proxy/Gateway Routing payload、Gateway Snapshot
+6. Worker 基础网络快照流、Proxy/Gateway Routing/凭据 Snapshot payload、Gateway Snapshot
    客户端和进程装配、同版本 Routing 编译/动态匹配、五种策略上游选择与 reject/wait/direct 已完成；
-   凭据分发与 Outcome 上报仍待完成。Redis ownership drain/ACK/过期回收及按 Worker 的可下发索引已完成。
+   Outcome 上报仍待完成。Redis ownership drain/ACK/过期回收及按 Worker 的可下发索引已完成。
 7. Checker 调度、探测器和健康 reducer。
 8. Admin/Distribution 细粒度授权和审计查询；Distribution 分布式限流已完成。
 9. 真实 Compose/Kubernetes 集成、故障演练和代表性集群负载测试。

docs/requirements/traceability.md

@@ -7,7 +7,7 @@
 
 | ID | 最终需求 | 来源 | 验证证据 |
 |---|---|---|---|
-| ARCH-001 | 数据面 Worker 与控制面 Controller 分离 | 1-70 | 包、协议和部署拓扑已分离；Controller 已运行 Worker Register/Watch/ACK/Runtime gRPC，并发布无凭据 Proxy/Gateway Routing 完整快照；Gateway 已将同版本 Routing 编译为动态匹配 View，并由独立进程维护控制面会话。Checker/Loadgen 构建产物与带凭据 Proxy 分发待实现 |
+| ARCH-001 | 数据面 Worker 与控制面 Controller 分离 | 1-70 | 包、协议和部署拓扑已分离；Controller 已运行 Worker Register/Watch/ACK/Runtime gRPC，并发布 Proxy/Gateway Routing/按引用去重凭据完整快照；Gateway 已将它们编译为同版本动态 View，并由独立进程维护控制面会话。Checker/Loadgen 构建产物待实现 |
 | ARCH-002 | 热路径只做认证、本地路由和网络转发 | 1-70, 380-430 | Gateway bootstrap 集成测试验证启动期控制面会话与快照就绪，HTTP 请求只走本地 Snapshot/Dispatch；代表性性能剖析待完成 |
 | ARCH-003 | Gateway、Distribution、Admin、Metrics 独立入口 | 8904-8958 | Controller 命令已装配 Distribution/Admin/Metrics 三个独立监听及联动停机；Gateway 命令已装配代理与 Metrics 监听，运行时 mTLS 部署 Overlay 待完成 |
 | ARCH-004 | Controller 集中 Provider 获取与切换 | 1403-1580 | Redis Leader、动态 Provider Supervisor 与 Bootstrap 生产装配已完成；Admin disable/reload 驱动取消替换，多副本按权威 HMAC 指纹和 revision 栅栏收敛并拒绝旧配置换主；Routing 切换到 Drain 的编排待完成 |

gen/controlplane/v1/controlplane.pb.go

@@ -604,8 +604,11 @@ type WorkerSnapshot struct {
 	Checksum       []byte                 `protobuf:"bytes,5,opt,name=checksum,proto3" json:"checksum,omitempty"`
 	Routing        []*RoutingRule         `protobuf:"bytes,6,rep,name=routing,proto3" json:"routing,omitempty"`
 	Proxies        []*OwnedProxy          `protobuf:"bytes,7,rep,name=proxies,proto3" json:"proxies,omitempty"`
-	unknownFields  protoimpl.UnknownFields
+	// Credential materials are protected by the WorkerControlPlane mTLS session
-	sizeCache      protoimpl.SizeCache
+	// and retained only in the Gateway's current in-memory snapshot view.
+	Credentials   []*SnapshotCredential `protobuf:"bytes,14,rep,name=credentials,proto3" json:"credentials,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *WorkerSnapshot) Reset() {
@@ -687,6 +690,81 @@ func (x *WorkerSnapshot) GetProxies() []*OwnedProxy {
 	return nil
 }
 
+func (x *WorkerSnapshot) GetCredentials() []*SnapshotCredential {
+	if x != nil {
+		return x.Credentials
+	}
+	return nil
+}
+
+type SnapshotCredential struct {
+	state             protoimpl.MessageState `protogen:"open.v1"`
+	SecretRef         string                 `protobuf:"bytes,1,opt,name=secret_ref,json=secretRef,proto3" json:"secret_ref,omitempty"`
+	CredentialVersion string                 `protobuf:"bytes,2,opt,name=credential_version,json=credentialVersion,proto3" json:"credential_version,omitempty"`
+	Username          string                 `protobuf:"bytes,3,opt,name=username,proto3" json:"username,omitempty"`
+	Password          string                 `protobuf:"bytes,4,opt,name=password,proto3" json:"password,omitempty"`
+	unknownFields     protoimpl.UnknownFields
+	sizeCache         protoimpl.SizeCache
+}
+
+func (x *SnapshotCredential) Reset() {
+	*x = SnapshotCredential{}
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *SnapshotCredential) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SnapshotCredential) ProtoMessage() {}
+
+func (x *SnapshotCredential) ProtoReflect() protoreflect.Message {
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[5]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SnapshotCredential.ProtoReflect.Descriptor instead.
+func (*SnapshotCredential) Descriptor() ([]byte, []int) {
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *SnapshotCredential) GetSecretRef() string {
+	if x != nil {
+		return x.SecretRef
+	}
+	return ""
+}
+
+func (x *SnapshotCredential) GetCredentialVersion() string {
+	if x != nil {
+		return x.CredentialVersion
+	}
+	return ""
+}
+
+func (x *SnapshotCredential) GetUsername() string {
+	if x != nil {
+		return x.Username
+	}
+	return ""
+}
+
+func (x *SnapshotCredential) GetPassword() string {
+	if x != nil {
+		return x.Password
+	}
+	return ""
+}
+
 type SnapshotDelta struct {
 	state               protoimpl.MessageState `protogen:"open.v1"`
 	BaseVersion         uint64                 `protobuf:"varint,1,opt,name=base_version,json=baseVersion,proto3" json:"base_version,omitempty"`
@@ -704,7 +782,7 @@ type SnapshotDelta struct {
 
 func (x *SnapshotDelta) Reset() {
 	*x = SnapshotDelta{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[5]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[6]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -716,7 +794,7 @@ func (x *SnapshotDelta) String() string {
 func (*SnapshotDelta) ProtoMessage() {}
 
 func (x *SnapshotDelta) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[5]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[6]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -729,7 +807,7 @@ func (x *SnapshotDelta) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SnapshotDelta.ProtoReflect.Descriptor instead.
 func (*SnapshotDelta) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{5}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *SnapshotDelta) GetBaseVersion() uint64 {
@@ -813,7 +891,7 @@ type RoutingRule struct {
 
 func (x *RoutingRule) Reset() {
 	*x = RoutingRule{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[6]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[7]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -825,7 +903,7 @@ func (x *RoutingRule) String() string {
 func (*RoutingRule) ProtoMessage() {}
 
 func (x *RoutingRule) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[6]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[7]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -838,7 +916,7 @@ func (x *RoutingRule) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RoutingRule.ProtoReflect.Descriptor instead.
 func (*RoutingRule) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{6}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *RoutingRule) GetName() string {
@@ -922,7 +1000,7 @@ type RoutingStrategy struct {
 
 func (x *RoutingStrategy) Reset() {
 	*x = RoutingStrategy{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[7]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[8]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -934,7 +1012,7 @@ func (x *RoutingStrategy) String() string {
 func (*RoutingStrategy) ProtoMessage() {}
 
 func (x *RoutingStrategy) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[7]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[8]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -947,7 +1025,7 @@ func (x *RoutingStrategy) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RoutingStrategy.ProtoReflect.Descriptor instead.
 func (*RoutingStrategy) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{7}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *RoutingStrategy) GetType() StrategyType {
@@ -992,7 +1070,7 @@ type OwnedProxy struct {
 
 func (x *OwnedProxy) Reset() {
 	*x = OwnedProxy{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[8]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[9]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1004,7 +1082,7 @@ func (x *OwnedProxy) String() string {
 func (*OwnedProxy) ProtoMessage() {}
 
 func (x *OwnedProxy) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[8]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[9]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1017,7 +1095,7 @@ func (x *OwnedProxy) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use OwnedProxy.ProtoReflect.Descriptor instead.
 func (*OwnedProxy) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{8}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *OwnedProxy) GetId() string {
@@ -1127,7 +1205,7 @@ type AcknowledgeSnapshotRequest struct {
 
 func (x *AcknowledgeSnapshotRequest) Reset() {
 	*x = AcknowledgeSnapshotRequest{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[9]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[10]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1139,7 +1217,7 @@ func (x *AcknowledgeSnapshotRequest) String() string {
 func (*AcknowledgeSnapshotRequest) ProtoMessage() {}
 
 func (x *AcknowledgeSnapshotRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[9]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[10]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1152,7 +1230,7 @@ func (x *AcknowledgeSnapshotRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AcknowledgeSnapshotRequest.ProtoReflect.Descriptor instead.
 func (*AcknowledgeSnapshotRequest) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{9}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *AcknowledgeSnapshotRequest) GetWorkerId() string {
@@ -1223,7 +1301,7 @@ type OutcomeBatch struct {
 
 func (x *OutcomeBatch) Reset() {
 	*x = OutcomeBatch{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[10]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[11]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1235,7 +1313,7 @@ func (x *OutcomeBatch) String() string {
 func (*OutcomeBatch) ProtoMessage() {}
 
 func (x *OutcomeBatch) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[10]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[11]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1248,7 +1326,7 @@ func (x *OutcomeBatch) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use OutcomeBatch.ProtoReflect.Descriptor instead.
 func (*OutcomeBatch) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{10}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *OutcomeBatch) GetWorkerId() string {
@@ -1294,7 +1372,7 @@ type ProxyOutcome struct {
 
 func (x *ProxyOutcome) Reset() {
 	*x = ProxyOutcome{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[11]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[12]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1306,7 +1384,7 @@ func (x *ProxyOutcome) String() string {
 func (*ProxyOutcome) ProtoMessage() {}
 
 func (x *ProxyOutcome) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[11]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[12]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1319,7 +1397,7 @@ func (x *ProxyOutcome) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ProxyOutcome.ProtoReflect.Descriptor instead.
 func (*ProxyOutcome) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{11}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *ProxyOutcome) GetProxyId() string {
@@ -1380,7 +1458,7 @@ type ReportOutcomesResponse struct {
 
 func (x *ReportOutcomesResponse) Reset() {
 	*x = ReportOutcomesResponse{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[12]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[13]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1392,7 +1470,7 @@ func (x *ReportOutcomesResponse) String() string {
 func (*ReportOutcomesResponse) ProtoMessage() {}
 
 func (x *ReportOutcomesResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[12]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[13]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1405,7 +1483,7 @@ func (x *ReportOutcomesResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReportOutcomesResponse.ProtoReflect.Descriptor instead.
 func (*ReportOutcomesResponse) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{12}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *ReportOutcomesResponse) GetAcceptedThroughSequence() uint64 {
@@ -1430,7 +1508,7 @@ type ReportRuntimeRequest struct {
 
 func (x *ReportRuntimeRequest) Reset() {
 	*x = ReportRuntimeRequest{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[13]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[14]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1442,7 +1520,7 @@ func (x *ReportRuntimeRequest) String() string {
 func (*ReportRuntimeRequest) ProtoMessage() {}
 
 func (x *ReportRuntimeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[13]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[14]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1455,7 +1533,7 @@ func (x *ReportRuntimeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReportRuntimeRequest.ProtoReflect.Descriptor instead.
 func (*ReportRuntimeRequest) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{13}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *ReportRuntimeRequest) GetWorkerId() string {
@@ -1519,7 +1597,7 @@ type ProxyRuntime struct {
 
 func (x *ProxyRuntime) Reset() {
 	*x = ProxyRuntime{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[14]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[15]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1531,7 +1609,7 @@ func (x *ProxyRuntime) String() string {
 func (*ProxyRuntime) ProtoMessage() {}
 
 func (x *ProxyRuntime) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[14]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[15]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1544,7 +1622,7 @@ func (x *ProxyRuntime) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ProxyRuntime.ProtoReflect.Descriptor instead.
 func (*ProxyRuntime) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{14}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *ProxyRuntime) GetProxyId() string {
@@ -1586,7 +1664,7 @@ type ReportRuntimeResponse struct {
 
 func (x *ReportRuntimeResponse) Reset() {
 	*x = ReportRuntimeResponse{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[15]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[16]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1598,7 +1676,7 @@ func (x *ReportRuntimeResponse) String() string {
 func (*ReportRuntimeResponse) ProtoMessage() {}
 
 func (x *ReportRuntimeResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[15]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[16]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1611,7 +1689,7 @@ func (x *ReportRuntimeResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReportRuntimeResponse.ProtoReflect.Descriptor instead.
 func (*ReportRuntimeResponse) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{15}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *ReportRuntimeResponse) GetAcceptedOwnershipEpoch() uint64 {
@@ -1647,7 +1725,7 @@ type StreamCheckTasksRequest struct {
 
 func (x *StreamCheckTasksRequest) Reset() {
 	*x = StreamCheckTasksRequest{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[16]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[17]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1659,7 +1737,7 @@ func (x *StreamCheckTasksRequest) String() string {
 func (*StreamCheckTasksRequest) ProtoMessage() {}
 
 func (x *StreamCheckTasksRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[16]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[17]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1672,7 +1750,7 @@ func (x *StreamCheckTasksRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use StreamCheckTasksRequest.ProtoReflect.Descriptor instead.
 func (*StreamCheckTasksRequest) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{16}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *StreamCheckTasksRequest) GetCheckerId() string {
@@ -1723,7 +1801,7 @@ type CheckTask struct {
 
 func (x *CheckTask) Reset() {
 	*x = CheckTask{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[17]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[18]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1735,7 +1813,7 @@ func (x *CheckTask) String() string {
 func (*CheckTask) ProtoMessage() {}
 
 func (x *CheckTask) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[17]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[18]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1748,7 +1826,7 @@ func (x *CheckTask) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CheckTask.ProtoReflect.Descriptor instead.
 func (*CheckTask) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{17}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{18}
 }
 
 func (x *CheckTask) GetTaskId() string {
@@ -1845,7 +1923,7 @@ type ObservationBatch struct {
 
 func (x *ObservationBatch) Reset() {
 	*x = ObservationBatch{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[18]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[19]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1857,7 +1935,7 @@ func (x *ObservationBatch) String() string {
 func (*ObservationBatch) ProtoMessage() {}
 
 func (x *ObservationBatch) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[18]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[19]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1870,7 +1948,7 @@ func (x *ObservationBatch) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ObservationBatch.ProtoReflect.Descriptor instead.
 func (*ObservationBatch) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{18}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{19}
 }
 
 func (x *ObservationBatch) GetCheckerId() string {
@@ -1905,7 +1983,7 @@ type HealthObservation struct {
 
 func (x *HealthObservation) Reset() {
 	*x = HealthObservation{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[19]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[20]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1917,7 +1995,7 @@ func (x *HealthObservation) String() string {
 func (*HealthObservation) ProtoMessage() {}
 
 func (x *HealthObservation) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[19]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[20]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1930,7 +2008,7 @@ func (x *HealthObservation) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HealthObservation.ProtoReflect.Descriptor instead.
 func (*HealthObservation) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{19}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{20}
 }
 
 func (x *HealthObservation) GetTaskId() string {
@@ -2013,7 +2091,7 @@ type ReportObservationsResponse struct {
 
 func (x *ReportObservationsResponse) Reset() {
 	*x = ReportObservationsResponse{}
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[20]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[21]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -2025,7 +2103,7 @@ func (x *ReportObservationsResponse) String() string {
 func (*ReportObservationsResponse) ProtoMessage() {}
 
 func (x *ReportObservationsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_controlplane_v1_controlplane_proto_msgTypes[20]
+	mi := &file_controlplane_v1_controlplane_proto_msgTypes[21]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2038,7 +2116,7 @@ func (x *ReportObservationsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReportObservationsResponse.ProtoReflect.Descriptor instead.
 func (*ReportObservationsResponse) Descriptor() ([]byte, []int) {
-	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{20}
+	return file_controlplane_v1_controlplane_proto_rawDescGZIP(), []int{21}
 }
 
 func (x *ReportObservationsResponse) GetAccepted() uint32 {
@@ -2086,7 +2164,7 @@ const file_controlplane_v1_controlplane_proto_rawDesc = "" +
 	"\x10SnapshotEnvelope\x12@\n" +
 	"\x04full\x18\x01 \x01(\v2*.proxy_pool.controlplane.v1.WorkerSnapshotH\x00R\x04full\x12A\n" +
 	"\x05delta\x18\x02 \x01(\v2).proxy_pool.controlplane.v1.SnapshotDeltaH\x00R\x05deltaB\t\n" +
-	"\apayload\"\xf0\x02\n" +
+	"\apayload\"\xc2\x03\n" +
 	"\x0eWorkerSnapshot\x12\x18\n" +
 	"\aversion\x18\x01 \x01(\x04R\aversion\x12'\n" +
 	"\x0fownership_epoch\x18\x02 \x01(\x04R\x0eownershipEpoch\x12=\n" +
@@ -2095,7 +2173,14 @@ const file_controlplane_v1_controlplane_proto_rawDesc = "" +
 	"validUntil\x12\x1a\n" +
 	"\bchecksum\x18\x05 \x01(\fR\bchecksum\x12A\n" +
 	"\arouting\x18\x06 \x03(\v2'.proxy_pool.controlplane.v1.RoutingRuleR\arouting\x12@\n" +
-	"\aproxies\x18\a \x03(\v2&.proxy_pool.controlplane.v1.OwnedProxyR\aproxies\"\xd7\x03\n" +
+	"\aproxies\x18\a \x03(\v2&.proxy_pool.controlplane.v1.OwnedProxyR\aproxies\x12P\n" +
+	"\vcredentials\x18\x0e \x03(\v2..proxy_pool.controlplane.v1.SnapshotCredentialR\vcredentials\"\x9a\x01\n" +
+	"\x12SnapshotCredential\x12\x1d\n" +
+	"\n" +
+	"secret_ref\x18\x01 \x01(\tR\tsecretRef\x12-\n" +
+	"\x12credential_version\x18\x02 \x01(\tR\x11credentialVersion\x12\x1a\n" +
+	"\busername\x18\x03 \x01(\tR\busername\x12\x1a\n" +
+	"\bpassword\x18\x04 \x01(\tR\bpassword\"\xd7\x03\n" +
 	"\rSnapshotDelta\x12!\n" +
 	"\fbase_version\x18\x01 \x01(\x04R\vbaseVersion\x12\x18\n" +
 	"\aversion\x18\x02 \x01(\x04R\aversion\x12'\n" +
@@ -2295,7 +2380,7 @@ func file_controlplane_v1_controlplane_proto_rawDescGZIP() []byte {
 }
 
 var file_controlplane_v1_controlplane_proto_enumTypes = make([]protoimpl.EnumInfo, 5)
-var file_controlplane_v1_controlplane_proto_msgTypes = make([]protoimpl.MessageInfo, 25)
+var file_controlplane_v1_controlplane_proto_msgTypes = make([]protoimpl.MessageInfo, 26)
 var file_controlplane_v1_controlplane_proto_goTypes = []any{
 	(StrategyType)(0),                  // 0: proxy_pool.controlplane.v1.StrategyType
 	(UnavailableAction)(0),             // 1: proxy_pool.controlplane.v1.UnavailableAction
@@ -2307,87 +2392,89 @@ var file_controlplane_v1_controlplane_proto_goTypes = []any{
 	(*WatchSnapshotsRequest)(nil),      // 7: proxy_pool.controlplane.v1.WatchSnapshotsRequest
 	(*SnapshotEnvelope)(nil),           // 8: proxy_pool.controlplane.v1.SnapshotEnvelope
 	(*WorkerSnapshot)(nil),             // 9: proxy_pool.controlplane.v1.WorkerSnapshot
-	(*SnapshotDelta)(nil),              // 10: proxy_pool.controlplane.v1.SnapshotDelta
+	(*SnapshotCredential)(nil),         // 10: proxy_pool.controlplane.v1.SnapshotCredential
-	(*RoutingRule)(nil),                // 11: proxy_pool.controlplane.v1.RoutingRule
+	(*SnapshotDelta)(nil),              // 11: proxy_pool.controlplane.v1.SnapshotDelta
-	(*RoutingStrategy)(nil),            // 12: proxy_pool.controlplane.v1.RoutingStrategy
+	(*RoutingRule)(nil),                // 12: proxy_pool.controlplane.v1.RoutingRule
-	(*OwnedProxy)(nil),                 // 13: proxy_pool.controlplane.v1.OwnedProxy
+	(*RoutingStrategy)(nil),            // 13: proxy_pool.controlplane.v1.RoutingStrategy
-	(*AcknowledgeSnapshotRequest)(nil), // 14: proxy_pool.controlplane.v1.AcknowledgeSnapshotRequest
+	(*OwnedProxy)(nil),                 // 14: proxy_pool.controlplane.v1.OwnedProxy
-	(*OutcomeBatch)(nil),               // 15: proxy_pool.controlplane.v1.OutcomeBatch
+	(*AcknowledgeSnapshotRequest)(nil), // 15: proxy_pool.controlplane.v1.AcknowledgeSnapshotRequest
-	(*ProxyOutcome)(nil),               // 16: proxy_pool.controlplane.v1.ProxyOutcome
+	(*OutcomeBatch)(nil),               // 16: proxy_pool.controlplane.v1.OutcomeBatch
-	(*ReportOutcomesResponse)(nil),     // 17: proxy_pool.controlplane.v1.ReportOutcomesResponse
+	(*ProxyOutcome)(nil),               // 17: proxy_pool.controlplane.v1.ProxyOutcome
-	(*ReportRuntimeRequest)(nil),       // 18: proxy_pool.controlplane.v1.ReportRuntimeRequest
+	(*ReportOutcomesResponse)(nil),     // 18: proxy_pool.controlplane.v1.ReportOutcomesResponse
-	(*ProxyRuntime)(nil),               // 19: proxy_pool.controlplane.v1.ProxyRuntime
+	(*ReportRuntimeRequest)(nil),       // 19: proxy_pool.controlplane.v1.ReportRuntimeRequest
-	(*ReportRuntimeResponse)(nil),      // 20: proxy_pool.controlplane.v1.ReportRuntimeResponse
+	(*ProxyRuntime)(nil),               // 20: proxy_pool.controlplane.v1.ProxyRuntime
-	(*StreamCheckTasksRequest)(nil),    // 21: proxy_pool.controlplane.v1.StreamCheckTasksRequest
+	(*ReportRuntimeResponse)(nil),      // 21: proxy_pool.controlplane.v1.ReportRuntimeResponse
-	(*CheckTask)(nil),                  // 22: proxy_pool.controlplane.v1.CheckTask
+	(*StreamCheckTasksRequest)(nil),    // 22: proxy_pool.controlplane.v1.StreamCheckTasksRequest
-	(*ObservationBatch)(nil),           // 23: proxy_pool.controlplane.v1.ObservationBatch
+	(*CheckTask)(nil),                  // 23: proxy_pool.controlplane.v1.CheckTask
-	(*HealthObservation)(nil),          // 24: proxy_pool.controlplane.v1.HealthObservation
+	(*ObservationBatch)(nil),           // 24: proxy_pool.controlplane.v1.ObservationBatch
-	(*ReportObservationsResponse)(nil), // 25: proxy_pool.controlplane.v1.ReportObservationsResponse
+	(*HealthObservation)(nil),          // 25: proxy_pool.controlplane.v1.HealthObservation
-	nil,                                // 26: proxy_pool.controlplane.v1.RegisterWorkerRequest.LabelsEntry
+	(*ReportObservationsResponse)(nil), // 26: proxy_pool.controlplane.v1.ReportObservationsResponse
-	nil,                                // 27: proxy_pool.controlplane.v1.RoutingRule.HeadersEntry
+	nil,                                // 27: proxy_pool.controlplane.v1.RegisterWorkerRequest.LabelsEntry
-	nil,                                // 28: proxy_pool.controlplane.v1.RoutingStrategy.WeightsEntry
+	nil,                                // 28: proxy_pool.controlplane.v1.RoutingRule.HeadersEntry
-	nil,                                // 29: proxy_pool.controlplane.v1.OwnedProxy.TagsEntry
+	nil,                                // 29: proxy_pool.controlplane.v1.RoutingStrategy.WeightsEntry
-	(*durationpb.Duration)(nil),        // 30: google.protobuf.Duration
+	nil,                                // 30: proxy_pool.controlplane.v1.OwnedProxy.TagsEntry
-	(*timestamppb.Timestamp)(nil),      // 31: google.protobuf.Timestamp
+	(*durationpb.Duration)(nil),        // 31: google.protobuf.Duration
-	(*emptypb.Empty)(nil),              // 32: google.protobuf.Empty
+	(*timestamppb.Timestamp)(nil),      // 32: google.protobuf.Timestamp
+	(*emptypb.Empty)(nil),              // 33: google.protobuf.Empty
 }
 var file_controlplane_v1_controlplane_proto_depIdxs = []int32{
-	26, // 0: proxy_pool.controlplane.v1.RegisterWorkerRequest.labels:type_name -> proxy_pool.controlplane.v1.RegisterWorkerRequest.LabelsEntry
+	27, // 0: proxy_pool.controlplane.v1.RegisterWorkerRequest.labels:type_name -> proxy_pool.controlplane.v1.RegisterWorkerRequest.LabelsEntry
-	30, // 1: proxy_pool.controlplane.v1.RegisterWorkerResponse.heartbeat_interval:type_name -> google.protobuf.Duration
+	31, // 1: proxy_pool.controlplane.v1.RegisterWorkerResponse.heartbeat_interval:type_name -> google.protobuf.Duration
-	30, // 2: proxy_pool.controlplane.v1.RegisterWorkerResponse.max_stale_age:type_name -> google.protobuf.Duration
+	31, // 2: proxy_pool.controlplane.v1.RegisterWorkerResponse.max_stale_age:type_name -> google.protobuf.Duration
 	9,  // 3: proxy_pool.controlplane.v1.SnapshotEnvelope.full:type_name -> proxy_pool.controlplane.v1.WorkerSnapshot
-	10, // 4: proxy_pool.controlplane.v1.SnapshotEnvelope.delta:type_name -> proxy_pool.controlplane.v1.SnapshotDelta
+	11, // 4: proxy_pool.controlplane.v1.SnapshotEnvelope.delta:type_name -> proxy_pool.controlplane.v1.SnapshotDelta
-	31, // 5: proxy_pool.controlplane.v1.WorkerSnapshot.generated_at:type_name -> google.protobuf.Timestamp
+	32, // 5: proxy_pool.controlplane.v1.WorkerSnapshot.generated_at:type_name -> google.protobuf.Timestamp
-	31, // 6: proxy_pool.controlplane.v1.WorkerSnapshot.valid_until:type_name -> google.protobuf.Timestamp
+	32, // 6: proxy_pool.controlplane.v1.WorkerSnapshot.valid_until:type_name -> google.protobuf.Timestamp
-	11, // 7: proxy_pool.controlplane.v1.WorkerSnapshot.routing:type_name -> proxy_pool.controlplane.v1.RoutingRule
+	12, // 7: proxy_pool.controlplane.v1.WorkerSnapshot.routing:type_name -> proxy_pool.controlplane.v1.RoutingRule
-	13, // 8: proxy_pool.controlplane.v1.WorkerSnapshot.proxies:type_name -> proxy_pool.controlplane.v1.OwnedProxy
+	14, // 8: proxy_pool.controlplane.v1.WorkerSnapshot.proxies:type_name -> proxy_pool.controlplane.v1.OwnedProxy
-	31, // 9: proxy_pool.controlplane.v1.SnapshotDelta.generated_at:type_name -> google.protobuf.Timestamp
+	10, // 9: proxy_pool.controlplane.v1.WorkerSnapshot.credentials:type_name -> proxy_pool.controlplane.v1.SnapshotCredential
-	11, // 10: proxy_pool.controlplane.v1.SnapshotDelta.upserted_routing:type_name -> proxy_pool.controlplane.v1.RoutingRule
+	32, // 10: proxy_pool.controlplane.v1.SnapshotDelta.generated_at:type_name -> google.protobuf.Timestamp
-	13, // 11: proxy_pool.controlplane.v1.SnapshotDelta.upserted_proxies:type_name -> proxy_pool.controlplane.v1.OwnedProxy
+	12, // 11: proxy_pool.controlplane.v1.SnapshotDelta.upserted_routing:type_name -> proxy_pool.controlplane.v1.RoutingRule
-	27, // 12: proxy_pool.controlplane.v1.RoutingRule.headers:type_name -> proxy_pool.controlplane.v1.RoutingRule.HeadersEntry
+	14, // 12: proxy_pool.controlplane.v1.SnapshotDelta.upserted_proxies:type_name -> proxy_pool.controlplane.v1.OwnedProxy
-	12, // 13: proxy_pool.controlplane.v1.RoutingRule.strategy:type_name -> proxy_pool.controlplane.v1.RoutingStrategy
+	28, // 13: proxy_pool.controlplane.v1.RoutingRule.headers:type_name -> proxy_pool.controlplane.v1.RoutingRule.HeadersEntry
-	1,  // 14: proxy_pool.controlplane.v1.RoutingRule.on_unavailable:type_name -> proxy_pool.controlplane.v1.UnavailableAction
+	13, // 14: proxy_pool.controlplane.v1.RoutingRule.strategy:type_name -> proxy_pool.controlplane.v1.RoutingStrategy
-	30, // 15: proxy_pool.controlplane.v1.RoutingRule.wait_timeout:type_name -> google.protobuf.Duration
+	1,  // 15: proxy_pool.controlplane.v1.RoutingRule.on_unavailable:type_name -> proxy_pool.controlplane.v1.UnavailableAction
-	0,  // 16: proxy_pool.controlplane.v1.RoutingStrategy.type:type_name -> proxy_pool.controlplane.v1.StrategyType
+	31, // 16: proxy_pool.controlplane.v1.RoutingRule.wait_timeout:type_name -> google.protobuf.Duration
-	28, // 17: proxy_pool.controlplane.v1.RoutingStrategy.weights:type_name -> proxy_pool.controlplane.v1.RoutingStrategy.WeightsEntry
+	0,  // 17: proxy_pool.controlplane.v1.RoutingStrategy.type:type_name -> proxy_pool.controlplane.v1.StrategyType
-	2,  // 18: proxy_pool.controlplane.v1.OwnedProxy.protocol:type_name -> proxy_pool.controlplane.v1.ProxyProtocol
+	29, // 18: proxy_pool.controlplane.v1.RoutingStrategy.weights:type_name -> proxy_pool.controlplane.v1.RoutingStrategy.WeightsEntry
-	31, // 19: proxy_pool.controlplane.v1.OwnedProxy.expires_at:type_name -> google.protobuf.Timestamp
+	2,  // 19: proxy_pool.controlplane.v1.OwnedProxy.protocol:type_name -> proxy_pool.controlplane.v1.ProxyProtocol
-	29, // 20: proxy_pool.controlplane.v1.OwnedProxy.tags:type_name -> proxy_pool.controlplane.v1.OwnedProxy.TagsEntry
+	32, // 20: proxy_pool.controlplane.v1.OwnedProxy.expires_at:type_name -> google.protobuf.Timestamp
-	31, // 21: proxy_pool.controlplane.v1.OwnedProxy.usable_until:type_name -> google.protobuf.Timestamp
+	30, // 21: proxy_pool.controlplane.v1.OwnedProxy.tags:type_name -> proxy_pool.controlplane.v1.OwnedProxy.TagsEntry
-	16, // 22: proxy_pool.controlplane.v1.OutcomeBatch.outcomes:type_name -> proxy_pool.controlplane.v1.ProxyOutcome
+	32, // 22: proxy_pool.controlplane.v1.OwnedProxy.usable_until:type_name -> google.protobuf.Timestamp
-	3,  // 23: proxy_pool.controlplane.v1.ProxyOutcome.stage:type_name -> proxy_pool.controlplane.v1.OutcomeStage
+	17, // 23: proxy_pool.controlplane.v1.OutcomeBatch.outcomes:type_name -> proxy_pool.controlplane.v1.ProxyOutcome
-	30, // 24: proxy_pool.controlplane.v1.ProxyOutcome.latency:type_name -> google.protobuf.Duration
+	3,  // 24: proxy_pool.controlplane.v1.ProxyOutcome.stage:type_name -> proxy_pool.controlplane.v1.OutcomeStage
-	31, // 25: proxy_pool.controlplane.v1.ProxyOutcome.observed_at:type_name -> google.protobuf.Timestamp
+	31, // 25: proxy_pool.controlplane.v1.ProxyOutcome.latency:type_name -> google.protobuf.Duration
-	19, // 26: proxy_pool.controlplane.v1.ReportRuntimeRequest.counters:type_name -> proxy_pool.controlplane.v1.ProxyRuntime
+	32, // 26: proxy_pool.controlplane.v1.ProxyOutcome.observed_at:type_name -> google.protobuf.Timestamp
-	31, // 27: proxy_pool.controlplane.v1.ReportRuntimeRequest.observed_at:type_name -> google.protobuf.Timestamp
+	20, // 27: proxy_pool.controlplane.v1.ReportRuntimeRequest.counters:type_name -> proxy_pool.controlplane.v1.ProxyRuntime
-	4,  // 28: proxy_pool.controlplane.v1.StreamCheckTasksRequest.supported_levels:type_name -> proxy_pool.controlplane.v1.CheckLevel
+	32, // 28: proxy_pool.controlplane.v1.ReportRuntimeRequest.observed_at:type_name -> google.protobuf.Timestamp
-	2,  // 29: proxy_pool.controlplane.v1.CheckTask.protocol:type_name -> proxy_pool.controlplane.v1.ProxyProtocol
+	4,  // 29: proxy_pool.controlplane.v1.StreamCheckTasksRequest.supported_levels:type_name -> proxy_pool.controlplane.v1.CheckLevel
-	4,  // 30: proxy_pool.controlplane.v1.CheckTask.level:type_name -> proxy_pool.controlplane.v1.CheckLevel
+	2,  // 30: proxy_pool.controlplane.v1.CheckTask.protocol:type_name -> proxy_pool.controlplane.v1.ProxyProtocol
-	30, // 31: proxy_pool.controlplane.v1.CheckTask.timeout:type_name -> google.protobuf.Duration
+	4,  // 31: proxy_pool.controlplane.v1.CheckTask.level:type_name -> proxy_pool.controlplane.v1.CheckLevel
-	31, // 32: proxy_pool.controlplane.v1.CheckTask.deadline:type_name -> google.protobuf.Timestamp
+	31, // 32: proxy_pool.controlplane.v1.CheckTask.timeout:type_name -> google.protobuf.Duration
-	24, // 33: proxy_pool.controlplane.v1.ObservationBatch.observations:type_name -> proxy_pool.controlplane.v1.HealthObservation
+	32, // 33: proxy_pool.controlplane.v1.CheckTask.deadline:type_name -> google.protobuf.Timestamp
-	4,  // 34: proxy_pool.controlplane.v1.HealthObservation.level:type_name -> proxy_pool.controlplane.v1.CheckLevel
+	25, // 34: proxy_pool.controlplane.v1.ObservationBatch.observations:type_name -> proxy_pool.controlplane.v1.HealthObservation
-	30, // 35: proxy_pool.controlplane.v1.HealthObservation.latency:type_name -> google.protobuf.Duration
+	4,  // 35: proxy_pool.controlplane.v1.HealthObservation.level:type_name -> proxy_pool.controlplane.v1.CheckLevel
-	31, // 36: proxy_pool.controlplane.v1.HealthObservation.observed_at:type_name -> google.protobuf.Timestamp
+	31, // 36: proxy_pool.controlplane.v1.HealthObservation.latency:type_name -> google.protobuf.Duration
-	5,  // 37: proxy_pool.controlplane.v1.WorkerControlPlane.RegisterWorker:input_type -> proxy_pool.controlplane.v1.RegisterWorkerRequest
+	32, // 37: proxy_pool.controlplane.v1.HealthObservation.observed_at:type_name -> google.protobuf.Timestamp
-	7,  // 38: proxy_pool.controlplane.v1.WorkerControlPlane.WatchSnapshots:input_type -> proxy_pool.controlplane.v1.WatchSnapshotsRequest
+	5,  // 38: proxy_pool.controlplane.v1.WorkerControlPlane.RegisterWorker:input_type -> proxy_pool.controlplane.v1.RegisterWorkerRequest
-	14, // 39: proxy_pool.controlplane.v1.WorkerControlPlane.AcknowledgeSnapshot:input_type -> proxy_pool.controlplane.v1.AcknowledgeSnapshotRequest
+	7,  // 39: proxy_pool.controlplane.v1.WorkerControlPlane.WatchSnapshots:input_type -> proxy_pool.controlplane.v1.WatchSnapshotsRequest
-	15, // 40: proxy_pool.controlplane.v1.WorkerControlPlane.ReportOutcomes:input_type -> proxy_pool.controlplane.v1.OutcomeBatch
+	15, // 40: proxy_pool.controlplane.v1.WorkerControlPlane.AcknowledgeSnapshot:input_type -> proxy_pool.controlplane.v1.AcknowledgeSnapshotRequest
-	18, // 41: proxy_pool.controlplane.v1.WorkerControlPlane.ReportRuntime:input_type -> proxy_pool.controlplane.v1.ReportRuntimeRequest
+	16, // 41: proxy_pool.controlplane.v1.WorkerControlPlane.ReportOutcomes:input_type -> proxy_pool.controlplane.v1.OutcomeBatch
-	21, // 42: proxy_pool.controlplane.v1.CheckerControlPlane.StreamCheckTasks:input_type -> proxy_pool.controlplane.v1.StreamCheckTasksRequest
+	19, // 42: proxy_pool.controlplane.v1.WorkerControlPlane.ReportRuntime:input_type -> proxy_pool.controlplane.v1.ReportRuntimeRequest
-	23, // 43: proxy_pool.controlplane.v1.CheckerControlPlane.ReportObservations:input_type -> proxy_pool.controlplane.v1.ObservationBatch
+	22, // 43: proxy_pool.controlplane.v1.CheckerControlPlane.StreamCheckTasks:input_type -> proxy_pool.controlplane.v1.StreamCheckTasksRequest
-	6,  // 44: proxy_pool.controlplane.v1.WorkerControlPlane.RegisterWorker:output_type -> proxy_pool.controlplane.v1.RegisterWorkerResponse
+	24, // 44: proxy_pool.controlplane.v1.CheckerControlPlane.ReportObservations:input_type -> proxy_pool.controlplane.v1.ObservationBatch
-	8,  // 45: proxy_pool.controlplane.v1.WorkerControlPlane.WatchSnapshots:output_type -> proxy_pool.controlplane.v1.SnapshotEnvelope
+	6,  // 45: proxy_pool.controlplane.v1.WorkerControlPlane.RegisterWorker:output_type -> proxy_pool.controlplane.v1.RegisterWorkerResponse
-	32, // 46: proxy_pool.controlplane.v1.WorkerControlPlane.AcknowledgeSnapshot:output_type -> google.protobuf.Empty
+	8,  // 46: proxy_pool.controlplane.v1.WorkerControlPlane.WatchSnapshots:output_type -> proxy_pool.controlplane.v1.SnapshotEnvelope
-	17, // 47: proxy_pool.controlplane.v1.WorkerControlPlane.ReportOutcomes:output_type -> proxy_pool.controlplane.v1.ReportOutcomesResponse
+	33, // 47: proxy_pool.controlplane.v1.WorkerControlPlane.AcknowledgeSnapshot:output_type -> google.protobuf.Empty
-	20, // 48: proxy_pool.controlplane.v1.WorkerControlPlane.ReportRuntime:output_type -> proxy_pool.controlplane.v1.ReportRuntimeResponse
+	18, // 48: proxy_pool.controlplane.v1.WorkerControlPlane.ReportOutcomes:output_type -> proxy_pool.controlplane.v1.ReportOutcomesResponse
-	22, // 49: proxy_pool.controlplane.v1.CheckerControlPlane.StreamCheckTasks:output_type -> proxy_pool.controlplane.v1.CheckTask
+	21, // 49: proxy_pool.controlplane.v1.WorkerControlPlane.ReportRuntime:output_type -> proxy_pool.controlplane.v1.ReportRuntimeResponse
-	25, // 50: proxy_pool.controlplane.v1.CheckerControlPlane.ReportObservations:output_type -> proxy_pool.controlplane.v1.ReportObservationsResponse
+	23, // 50: proxy_pool.controlplane.v1.CheckerControlPlane.StreamCheckTasks:output_type -> proxy_pool.controlplane.v1.CheckTask
-	44, // [44:51] is the sub-list for method output_type
+	26, // 51: proxy_pool.controlplane.v1.CheckerControlPlane.ReportObservations:output_type -> proxy_pool.controlplane.v1.ReportObservationsResponse
-	37, // [37:44] is the sub-list for method input_type
+	45, // [45:52] is the sub-list for method output_type
-	37, // [37:37] is the sub-list for extension type_name
+	38, // [38:45] is the sub-list for method input_type
-	37, // [37:37] is the sub-list for extension extendee
+	38, // [38:38] is the sub-list for extension type_name
-	0,  // [0:37] is the sub-list for field type_name
+	38, // [38:38] is the sub-list for extension extendee
+	0,  // [0:38] is the sub-list for field type_name
 }
 
 func init() { file_controlplane_v1_controlplane_proto_init() }
@@ -2405,7 +2492,7 @@ func file_controlplane_v1_controlplane_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_controlplane_v1_controlplane_proto_rawDesc), len(file_controlplane_v1_controlplane_proto_rawDesc)),
 			NumEnums:      5,
-			NumMessages:   25,
+			NumMessages:   26,
 			NumExtensions: 0,
 			NumServices:   2,
 		},

internal/controller/bootstrap/bootstrap.go

@@ -257,6 +257,7 @@ func runWithWorkerFactory(
 			MaxSnapshotBytes:   loaded.Value.ControlPlane.MaxMessageBytes,
 			SnapshotReader:     snapshotReader,
 			RoutingSource:      routingSource,
+			Credentials:        opened.credentials,
 		})
 		if serviceErr != nil {
 			return fmt.Errorf("%w: build Worker control service: %w", ErrStartup, serviceErr)

internal/controller/worker/owned_snapshot_source.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"math"
+	"sort"
 	"time"
 
 	controlplanev1 "proxy-pool/gen/controlplane/v1"
@@ -11,6 +12,7 @@ import (
 	ownershipDomain "proxy-pool/internal/domain/ownership"
 	proxyDomain "proxy-pool/internal/domain/proxy"
 	"proxy-pool/internal/domain/workerruntime"
+	platformCredentials "proxy-pool/internal/platform/credentials"
 
 	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/types/known/timestamppb"
@@ -21,13 +23,18 @@ var ErrSnapshotCredentialsUnavailable = errors.New("worker snapshot credential m
 // OwnedSnapshotSource builds a complete Worker view from the Redis ownership
 // index. It only accepts a complete bounded result from the reader.
 type OwnedSnapshotSource struct {
-	epochs     OwnershipEpochReader
+	epochs      OwnershipEpochReader
-	reader     ownershipDomain.SnapshotReader
+	reader      ownershipDomain.SnapshotReader
-	validFor   time.Duration
+	validFor    time.Duration
-	maxProxies int
+	maxProxies  int
-	maxBytes   int
+	maxBytes    int
-	now        func() time.Time
+	now         func() time.Time
-	routing    RoutingSource
+	routing     RoutingSource
+	credentials CredentialReader
+}
+
+type CredentialReader interface {
+	Resolve(context.Context, platformCredentials.Reference) (platformCredentials.Value, error)
 }
 
 func NewOwnedSnapshotSource(
@@ -38,6 +45,35 @@ func NewOwnedSnapshotSource(
 	maxBytes int,
 	now func() time.Time,
 	routing ...RoutingSource,
+) (*OwnedSnapshotSource, error) {
+	return newOwnedSnapshotSource(epochs, reader, validFor, maxProxies, maxBytes, now, nil, routing...)
+}
+
+func NewOwnedSnapshotSourceWithCredentials(
+	epochs OwnershipEpochReader,
+	reader ownershipDomain.SnapshotReader,
+	validFor time.Duration,
+	maxProxies int,
+	maxBytes int,
+	now func() time.Time,
+	credentials CredentialReader,
+	routing ...RoutingSource,
+) (*OwnedSnapshotSource, error) {
+	if credentials == nil {
+		return nil, ErrSnapshotsUnavailable
+	}
+	return newOwnedSnapshotSource(epochs, reader, validFor, maxProxies, maxBytes, now, credentials, routing...)
+}
+
+func newOwnedSnapshotSource(
+	epochs OwnershipEpochReader,
+	reader ownershipDomain.SnapshotReader,
+	validFor time.Duration,
+	maxProxies int,
+	maxBytes int,
+	now func() time.Time,
+	credentials CredentialReader,
+	routing ...RoutingSource,
 ) (*OwnedSnapshotSource, error) {
 	if epochs == nil || reader == nil || validFor <= 0 || maxProxies <= 0 || maxBytes <= 0 || now == nil || len(routing) > 1 ||
 		len(routing) == 1 && routing[0] == nil {
@@ -45,6 +81,7 @@ func NewOwnedSnapshotSource(
 	}
 	source := &OwnedSnapshotSource{
 		epochs: epochs, reader: reader, validFor: validFor, maxProxies: maxProxies, maxBytes: maxBytes, now: now,
+		credentials: credentials,
 	}
 	if len(routing) == 1 {
 		source.routing = routing[0]
@@ -77,6 +114,7 @@ func (source *OwnedSnapshotSource) Watch(ctx context.Context, request SnapshotWa
 		GeneratedAt: timestamppb.New(now), ValidUntil: timestamppb.New(now.Add(source.validFor)),
 		Proxies: make([]*controlplanev1.OwnedProxy, 0, len(proxies)),
 	}
+	materials := make(map[platformCredentials.Reference]platformCredentials.Value)
 	for _, item := range proxies {
 		owned, validUntil, err := wireOwnedProxy(item, now)
 		if err != nil {
@@ -86,7 +124,26 @@ func (source *OwnedSnapshotSource) Watch(ctx context.Context, request SnapshotWa
 			full.ValidUntil = timestamppb.New(validUntil)
 		}
 		full.Proxies = append(full.Proxies, owned)
+		if owned.GetSecretRef() != "" {
+			reference := platformCredentials.Reference{SecretRef: owned.GetSecretRef(), CredentialVersion: owned.GetCredentialVersion()}
+			if source.credentials == nil {
+				return nil, ErrSnapshotCredentialsUnavailable
+			}
+			material, resolveErr := source.credentials.Resolve(ctx, reference)
+			if resolveErr != nil || (material.Username == "" && material.Password == "") ||
+				(owned.GetUsername() != "" && material.Username != "" && material.Username != owned.GetUsername()) {
+				return nil, ErrSnapshotCredentialsUnavailable
+			}
+			if material.Username == "" {
+				material.Username = owned.GetUsername()
+			}
+			if existing, exists := materials[reference]; exists && existing != material {
+				return nil, ErrSnapshotCredentialsUnavailable
+			}
+			materials[reference] = material
+		}
 	}
+	full.Credentials = wireSnapshotCredentials(materials)
 	if source.routing != nil {
 		routing, err := source.routing.Read(ctx)
 		if err != nil {
@@ -107,6 +164,23 @@ func (source *OwnedSnapshotSource) Watch(ctx context.Context, request SnapshotWa
 	return updates, nil
 }
 
+func wireSnapshotCredentials(materials map[platformCredentials.Reference]platformCredentials.Value) []*controlplanev1.SnapshotCredential {
+	result := make([]*controlplanev1.SnapshotCredential, 0, len(materials))
+	for reference, material := range materials {
+		result = append(result, &controlplanev1.SnapshotCredential{
+			SecretRef: reference.SecretRef, CredentialVersion: reference.CredentialVersion,
+			Username: material.Username, Password: material.Password,
+		})
+	}
+	sort.Slice(result, func(left, right int) bool {
+		if result[left].GetSecretRef() == result[right].GetSecretRef() {
+			return result[left].GetCredentialVersion() < result[right].GetCredentialVersion()
+		}
+		return result[left].GetSecretRef() < result[right].GetSecretRef()
+	})
+	return result
+}
+
 func cloneSnapshotRouting(source []*controlplanev1.RoutingRule) []*controlplanev1.RoutingRule {
 	result := make([]*controlplanev1.RoutingRule, len(source))
 	for index, rule := range source {
@@ -119,7 +193,7 @@ func cloneSnapshotRouting(source []*controlplanev1.RoutingRule) []*controlplanev
 
 func wireOwnedProxy(item ownershipDomain.SnapshotProxy, now time.Time) (*controlplanev1.OwnedProxy, time.Time, error) {
 	proxy := item.Proxy
-	if item.OwnershipEpoch == 0 || item.LeaseExpiresAt.IsZero() || proxy.CredentialVersion != "" || proxy.SecretRef != "" {
+	if item.OwnershipEpoch == 0 || item.LeaseExpiresAt.IsZero() || (proxy.CredentialVersion == "") != (proxy.SecretRef == "") {
 		if proxy.CredentialVersion != "" || proxy.SecretRef != "" {
 			return nil, time.Time{}, ErrSnapshotCredentialsUnavailable
 		}
@@ -144,7 +218,7 @@ func wireOwnedProxy(item ownershipDomain.SnapshotProxy, now time.Time) (*control
 	}
 	return &controlplanev1.OwnedProxy{
 		Id: proxy.ID, Upstream: proxy.SourceUpstream, Protocol: protocol, Host: proxy.Host, Port: uint32(proxy.Port),
-		Username: proxy.Username, ExpiresAt: timestamppb.New(proxy.ExpiresAt.UTC()),
+		Username: proxy.Username, CredentialVersion: proxy.CredentialVersion, SecretRef: proxy.SecretRef, ExpiresAt: timestamppb.New(proxy.ExpiresAt.UTC()),
 		MaxConcurrency: uint32(proxy.MaxConcurrency), Tags: tags, OwnershipEpoch: item.OwnershipEpoch,
 		UsableUntil: timestamppb.New(validUntil),
 	}, validUntil, nil

internal/controller/worker/service.go

@@ -10,6 +10,7 @@ import (
 
 	ownershipDomain "proxy-pool/internal/domain/ownership"
 	"proxy-pool/internal/domain/workerruntime"
+	platformCredentials "proxy-pool/internal/platform/credentials"
 )
 
 var (
@@ -59,6 +60,7 @@ type Options struct {
 	MaxSnapshotBytes   int
 	SnapshotReader     ownershipDomain.SnapshotReader
 	RoutingSource      RoutingSource
+	Credentials        platformCredentials.Store
 	SessionID          func() (string, error)
 }
 
@@ -136,9 +138,17 @@ func NewService(store workerruntime.ControlStore, options Options) (Service, err
 		if options.RoutingSource != nil {
 			routing = append(routing, options.RoutingSource)
 		}
-		source, err := NewOwnedSnapshotSource(
+		var source SnapshotSource
-			result, options.SnapshotReader, options.MaxStaleAge, options.MaxRuntimeCounters, options.MaxSnapshotBytes, time.Now, routing...,
+		var err error
-		)
+		if options.Credentials != nil {
+			source, err = NewOwnedSnapshotSourceWithCredentials(
+				result, options.SnapshotReader, options.MaxStaleAge, options.MaxRuntimeCounters, options.MaxSnapshotBytes, time.Now, options.Credentials, routing...,
+			)
+		} else {
+			source, err = NewOwnedSnapshotSource(
+				result, options.SnapshotReader, options.MaxStaleAge, options.MaxRuntimeCounters, options.MaxSnapshotBytes, time.Now, routing...,
+			)
+		}
 		if err != nil {
 			return nil, errors.Join(ErrInvalidCommand, err)
 		}

internal/controller/worker/snapshot_source_test.go

@@ -10,6 +10,7 @@ import (
 	"proxy-pool/internal/controlplane/snapshotwire"
 	ownershipDomain "proxy-pool/internal/domain/ownership"
 	proxyDomain "proxy-pool/internal/domain/proxy"
+	platformCredentials "proxy-pool/internal/platform/credentials"
 )
 
 func TestInitialSnapshotSourceIssuesNextFullSnapshot(t *testing.T) {
@@ -123,6 +124,44 @@ func TestOwnedSnapshotSourceRejectsCredentialReferenceUntilMaterialIsAvailable(t
 	}
 }
 
+func TestOwnedSnapshotSourceIncludesReferencedCredentialMaterial(t *testing.T) {
+	now := time.Date(2026, 7, 31, 12, 0, 0, 0, time.UTC)
+	expiresAt := now.Add(time.Minute)
+	usableUntil := now.Add(30 * time.Second)
+	store, err := platformCredentials.NewMemoryStore(2)
+	if err != nil {
+		t.Fatalf("NewMemoryStore(): %v", err)
+	}
+	reference, err := store.Put(context.Background(), "provider-a", platformCredentials.Value{Username: "upstream", Password: "secret"})
+	if err != nil {
+		t.Fatalf("Put(): %v", err)
+	}
+	source, err := NewOwnedSnapshotSourceWithCredentials(epochReaderStub{epoch: 1}, snapshotReaderStub{proxies: []ownershipDomain.SnapshotProxy{{
+		Proxy: proxyDomain.Proxy{
+			ID: "proxy-a", Scheme: proxyDomain.SchemeHTTP, Host: "192.0.2.10", Port: 8080, SourceUpstream: "upstream-a",
+			Username: "upstream", SecretRef: reference.SecretRef, CredentialVersion: reference.CredentialVersion,
+			ExpiresAt: &expiresAt, UsableUntil: &usableUntil, MaxConcurrency: 1, State: proxyDomain.StateAvailable,
+		}, OwnershipEpoch: 1, LeaseExpiresAt: now.Add(time.Minute),
+	}}}, time.Minute, 10, 4096, func() time.Time { return now }, store)
+	if err != nil {
+		t.Fatalf("NewOwnedSnapshotSourceWithCredentials(): %v", err)
+	}
+	updates, err := source.Watch(context.Background(), SnapshotWatchRequest{WorkerID: "worker-a", SessionID: "session-a"})
+	if err != nil {
+		t.Fatalf("Watch(): %v", err)
+	}
+	full := <-updates
+	if len(full.GetCredentials()) != 1 || full.GetCredentials()[0].GetSecretRef() != reference.SecretRef ||
+		full.GetCredentials()[0].GetUsername() != "upstream" || full.GetCredentials()[0].GetPassword() != "secret" ||
+		full.GetProxies()[0].GetCredentialVersion() != reference.CredentialVersion {
+		t.Fatal("snapshot credential material or proxy credential reference is invalid")
+	}
+	checksum, err := snapshotwire.Checksum(full)
+	if err != nil || string(checksum[:]) != string(full.GetChecksum()) {
+		t.Fatalf("snapshot checksum = %x, %v; want %x", full.GetChecksum(), err, checksum)
+	}
+}
+
 type epochReaderStub struct {
 	epoch uint64
 	err   error

internal/gateway/bootstrap/bootstrap.go

@@ -23,6 +23,7 @@ import (
 
 	controlplanev1 "proxy-pool/gen/controlplane/v1"
 	"proxy-pool/internal/config"
+	proxyDomain "proxy-pool/internal/domain/proxy"
 	"proxy-pool/internal/domain/workerruntime"
 	"proxy-pool/internal/gateway/controlplane"
 	"proxy-pool/internal/gateway/dispatch"
@@ -145,7 +146,7 @@ func newRuntime(ctx context.Context, configuration *config.Config, options Optio
 	if err != nil {
 		return nil, fmt.Errorf("build gateway target policy: %w", err)
 	}
-	proxyTransport := transport.New(transport.Config{}, nil)
+	proxyTransport := transport.New(transport.Config{}, snapshotCredentialResolver{store: store})
 	handler, err := server.New(server.ConfigFromListener(configuration.Gateway), server.Dependencies{
 		Auth:       protection.Auth,
 		Access:     protection.Access,
@@ -222,6 +223,18 @@ type generatedRuntimeClient struct {
 	client controlplanev1.WorkerControlPlaneClient
 }
 
+type snapshotCredentialResolver struct {
+	store *snapshot.Store
+}
+
+func (resolver snapshotCredentialResolver) Resolve(ctx context.Context, selected proxyDomain.Proxy) (transport.Credentials, error) {
+	credential, err := resolver.store.Credential(ctx, selected)
+	if err != nil {
+		return transport.Credentials{}, err
+	}
+	return transport.Credentials{Username: credential.Username, Password: credential.Password}, nil
+}
+
 func (client generatedRuntimeClient) RegisterWorker(
 	ctx context.Context,
 	request *controlplanev1.RegisterWorkerRequest,

internal/gateway/controlplane/watcher.go

@@ -126,6 +126,10 @@ func (watcher *SnapshotWatcher) applyFull(full *controlplanev1.WorkerSnapshot) e
 	if err != nil {
 		return err
 	}
+	credentials, err := wireSnapshotCredentials(full.GetCredentials(), proxies)
+	if err != nil {
+		return err
+	}
 	routes, err := wireRouting(full.GetRouting())
 	if err != nil {
 		return err
@@ -133,12 +137,42 @@ func (watcher *SnapshotWatcher) applyFull(full *controlplanev1.WorkerSnapshot) e
 	envelope := snapshot.Envelope{
 		ClusterID: watcher.options.ClusterID, WorkerID: watcher.options.WorkerID,
 		Epoch: full.GetOwnershipEpoch(), Version: full.GetVersion(), Full: true, ValidUntil: validUntil,
-		Proxies: proxies, Routing: routes,
+		Proxies: proxies, Routing: routes, Credentials: credentials,
 	}
-	envelope.Checksum = snapshot.ChecksumWithRouting(proxies, routes)
+	envelope.Checksum = snapshot.ChecksumWithCredentials(proxies, routes, credentials)
 	return watcher.store.Apply(envelope)
 }
 
+func wireSnapshotCredentials(source []*controlplanev1.SnapshotCredential, proxies []proxyDomain.Proxy) ([]snapshot.Credential, error) {
+	result := make([]snapshot.Credential, len(source))
+	indexed := make(map[string]struct{}, len(source))
+	for index, item := range source {
+		if item == nil || !workerruntime.ValidIdentifier(item.GetSecretRef()) || !workerruntime.ValidIdentifier(item.GetCredentialVersion()) ||
+			(item.GetUsername() == "" && item.GetPassword() == "") {
+			return nil, ErrInvalidSnapshotWatcher
+		}
+		key := item.GetSecretRef() + "\x00" + item.GetCredentialVersion()
+		if _, duplicate := indexed[key]; duplicate {
+			return nil, ErrInvalidSnapshotWatcher
+		}
+		indexed[key] = struct{}{}
+		result[index] = snapshot.Credential{
+			SecretRef: item.GetSecretRef(), CredentialVersion: item.GetCredentialVersion(),
+			Username: item.GetUsername(), Password: item.GetPassword(),
+		}
+	}
+	for _, proxy := range proxies {
+		if proxy.SecretRef == "" && proxy.CredentialVersion == "" {
+			continue
+		}
+		key := proxy.SecretRef + "\x00" + proxy.CredentialVersion
+		if _, exists := indexed[key]; !exists {
+			return nil, ErrInvalidSnapshotWatcher
+		}
+	}
+	return result, nil
+}
+
 func wireRouting(source []*controlplanev1.RoutingRule) ([]routingDomain.Rule, error) {
 	result := make([]routingDomain.Rule, 0, len(source))
 	names := make(map[string]struct{}, len(source))

internal/gateway/controlplane/watcher_test.go

@@ -23,7 +23,11 @@ func TestSnapshotWatcherAppliesVerifiedFullSnapshotAndAcknowledges(t *testing.T)
 		Version: 1, OwnershipEpoch: 7, GeneratedAt: timestamppb.New(time.Now()), ValidUntil: timestamppb.New(time.Now().Add(time.Minute)),
 		Proxies: []*controlplanev1.OwnedProxy{{
 			Id: "proxy-a", Upstream: "upstream-a", Protocol: controlplanev1.ProxyProtocol_PROXY_PROTOCOL_HTTP,
-			Host: "192.0.2.10", Port: 8080, MaxConcurrency: 3, ExpiresAt: timestamppb.New(time.Now().Add(time.Minute)),
+			Host: "192.0.2.10", Port: 8080, Username: "upstream", SecretRef: "cred_a", CredentialVersion: "v1",
+			MaxConcurrency: 3, ExpiresAt: timestamppb.New(time.Now().Add(time.Minute)),
+		}},
+		Credentials: []*controlplanev1.SnapshotCredential{{
+			SecretRef: "cred_a", CredentialVersion: "v1", Username: "upstream", Password: "secret",
 		}},
 		Routing: []*controlplanev1.RoutingRule{{
 			Name: "gateway-api", Enabled: true, HostRegex: `^api\.example\.test$`, Upstreams: []string{"upstream-a"},
@@ -54,6 +58,10 @@ func TestSnapshotWatcherAppliesVerifiedFullSnapshotAndAcknowledges(t *testing.T)
 	if client.watch.GetSessionId() != "session-a" || client.ack.GetVersion() != 1 || !client.ack.GetApplied() || string(client.ack.GetChecksum()) != string(full.GetChecksum()) {
 		t.Fatalf("watch=%+v ack=%+v", client.watch, client.ack)
 	}
+	credential, err := store.Credential(context.Background(), view.Entries[0].Proxy)
+	if err != nil || credential.Username != "upstream" || credential.Password != "secret" {
+		t.Fatalf("Credential() = (%+v, %v)", credential, err)
+	}
 }
 
 func TestSnapshotWatcherRejectsChecksumAndAcknowledgesFailure(t *testing.T) {

internal/gateway/server/e2e_test.go

@@ -277,7 +277,6 @@ func proxyDescriptor(t *testing.T, id, rawURL string) proxyDomain.Proxy {
 		SourceUpstream:    "provider-a",
 		MaxConcurrency:    2,
 		State:             proxyDomain.StateAvailable,
-		CredentialVersion: "v1",
 	}
 }
 

internal/gateway/server/handler_test.go

@@ -595,7 +595,6 @@ func dispatcherWithProxies(t *testing.T, ids ...string) (*dispatch.Dispatcher, *
 			SourceUpstream:    "provider-a",
 			MaxConcurrency:    2,
 			State:             proxyDomain.StateAvailable,
-			CredentialVersion: "v1",
 		})
 	}
 	envelope := snapshot.Envelope{

internal/gateway/snapshot/store.go

@@ -1,6 +1,7 @@
 package snapshot
 
 import (
+	"context"
 	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
@@ -24,6 +25,8 @@ var (
 	ErrInvalidRuntimeReport = errors.New("invalid worker runtime report")
 	ErrInvalidRuntimeLimit  = errors.New("invalid snapshot runtime limit")
 	ErrRuntimeLimitExceeded = errors.New("snapshot runtime limit exceeded")
+	ErrInvalidCredential    = errors.New("invalid snapshot credential")
+	ErrCredentialMissing    = errors.New("snapshot credential is missing")
 )
 
 const defaultRuntimeLimit = 1_000_000
@@ -93,15 +96,29 @@ type runtimeRegistration struct {
 }
 
 type Envelope struct {
-	ClusterID  string
+	ClusterID   string
-	WorkerID   string
+	WorkerID    string
-	Epoch      uint64
+	Epoch       uint64
-	Version    uint64
+	Version     uint64
-	Full       bool
+	Full        bool
-	Checksum   string
+	Checksum    string
-	ValidUntil time.Time
+	ValidUntil  time.Time
-	Proxies    []proxyDomain.Proxy
+	Proxies     []proxyDomain.Proxy
-	Routing    []routing.Rule
+	Routing     []routing.Rule
+	Credentials []Credential
+}
+
+// Credential is ephemeral material received through a verified mTLS snapshot.
+// Its Format method prevents accidental diagnostics from exposing either value.
+type Credential struct {
+	SecretRef         string
+	CredentialVersion string
+	Username          string
+	Password          string
+}
+
+func (Credential) Format(state fmt.State, _ rune) {
+	_, _ = state.Write([]byte("snapshot.Credential{SecretRef:<redacted>, CredentialVersion:<redacted>, Username:<redacted>, Password:<redacted>}"))
 }
 
 type Entry struct {
@@ -110,14 +127,15 @@ type Entry struct {
 }
 
 type View struct {
-	ClusterID  string
+	ClusterID   string
-	WorkerID   string
+	WorkerID    string
-	Epoch      uint64
+	Epoch       uint64
-	Version    uint64
+	Version     uint64
-	Checksum   string
+	Checksum    string
-	ValidUntil time.Time
+	ValidUntil  time.Time
-	Entries    []Entry
+	Entries     []Entry
-	routing    *routing.RuleSet
+	routing     *routing.RuleSet
+	credentials map[string]Credential
 
 	all        []int
 	byScheme   map[proxyDomain.Scheme][]int
@@ -229,13 +247,17 @@ func (s *Store) Apply(envelope Envelope) error {
 	if !envelope.Full || envelope.Epoch == 0 || envelope.Version == 0 {
 		return ErrResyncRequired
 	}
-	if envelope.Checksum != ChecksumWithRouting(envelope.Proxies, envelope.Routing) {
+	if envelope.Checksum != ChecksumWithCredentials(envelope.Proxies, envelope.Routing, envelope.Credentials) {
 		return ErrChecksumMismatch
 	}
 	routes, err := routing.Compile(envelope.Routing)
 	if err != nil {
 		return fmt.Errorf("compile snapshot routing: %w", err)
 	}
+	credentials, err := indexCredentials(envelope.Credentials, envelope.Proxies)
+	if err != nil {
+		return err
+	}
 
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -315,20 +337,56 @@ func (s *Store) Apply(envelope Envelope) error {
 	}
 
 	next := &View{
-		ClusterID:  envelope.ClusterID,
+		ClusterID:   envelope.ClusterID,
-		WorkerID:   envelope.WorkerID,
+		WorkerID:    envelope.WorkerID,
-		Epoch:      envelope.Epoch,
+		Epoch:       envelope.Epoch,
-		Version:    envelope.Version,
+		Version:     envelope.Version,
-		Checksum:   envelope.Checksum,
+		Checksum:    envelope.Checksum,
-		ValidUntil: envelope.ValidUntil.UTC(),
+		ValidUntil:  envelope.ValidUntil.UTC(),
-		Entries:    entries,
+		Entries:     entries,
-		routing:    routes,
+		routing:     routes,
+		credentials: credentials,
 	}
 	next.buildIndexes()
 	s.current.Store(next)
 	return nil
 }
 
+// Credential resolves one exact Proxy credential reference from the current
+// immutable view. Credentialless proxies preserve their metadata username.
+func (s *Store) Credential(ctx context.Context, selected proxyDomain.Proxy) (Credential, error) {
+	if ctx == nil {
+		return Credential{}, context.Canceled
+	}
+	if err := ctx.Err(); err != nil {
+		return Credential{}, err
+	}
+	if (selected.SecretRef == "") != (selected.CredentialVersion == "") {
+		return Credential{}, ErrInvalidCredential
+	}
+	if selected.SecretRef == "" {
+		return Credential{Username: selected.Username}, nil
+	}
+	if s == nil {
+		return Credential{}, ErrCredentialMissing
+	}
+	current := s.current.Load()
+	if current == nil {
+		return Credential{}, ErrCredentialMissing
+	}
+	credential, ok := current.credentials[credentialKey(selected.SecretRef, selected.CredentialVersion)]
+	if !ok {
+		return Credential{}, ErrCredentialMissing
+	}
+	if selected.Username != "" && credential.Username != "" && selected.Username != credential.Username {
+		return Credential{}, ErrInvalidCredential
+	}
+	if credential.Username == "" {
+		credential.Username = selected.Username
+	}
+	return credential, nil
+}
+
 // MatchRouting matches a request against the immutable rules published with
 // this proxy view. A View is the atomic consistency boundary for both sets.
 func (v *View) MatchRouting(request routing.Request) (routing.Rule, bool) {
@@ -427,12 +485,18 @@ func Checksum(proxies []proxyDomain.Proxy) string {
 }
 
 func ChecksumWithRouting(proxies []proxyDomain.Proxy, rules []routing.Rule) string {
+	return ChecksumWithCredentials(proxies, rules, nil)
+}
+
+func ChecksumWithCredentials(proxies []proxyDomain.Proxy, rules []routing.Rule, credentials []Credential) string {
 	payload := struct {
-		Proxies []proxyDomain.Proxy `json:"proxies"`
+		Proxies     []proxyDomain.Proxy `json:"proxies"`
-		Routing []routing.Rule      `json:"routing"`
+		Routing     []routing.Rule      `json:"routing"`
+		Credentials []Credential        `json:"credentials"`
 	}{
-		Proxies: cloneAndSort(proxies),
+		Proxies:     cloneAndSort(proxies),
-		Routing: cloneRoutingRules(rules),
+		Routing:     cloneRoutingRules(rules),
+		Credentials: cloneAndSortCredentials(credentials),
 	}
 	encoded, err := json.Marshal(payload)
 	if err != nil {
@@ -442,6 +506,46 @@ func ChecksumWithRouting(proxies []proxyDomain.Proxy, rules []routing.Rule) stri
 	return hex.EncodeToString(digest[:])
 }
 
+func indexCredentials(source []Credential, proxies []proxyDomain.Proxy) (map[string]Credential, error) {
+	indexed := make(map[string]Credential, len(source))
+	for _, credential := range source {
+		if credential.SecretRef == "" || credential.CredentialVersion == "" || (credential.Username == "" && credential.Password == "") {
+			return nil, ErrInvalidCredential
+		}
+		key := credentialKey(credential.SecretRef, credential.CredentialVersion)
+		if _, duplicate := indexed[key]; duplicate {
+			return nil, ErrInvalidCredential
+		}
+		indexed[key] = credential
+	}
+	for _, proxy := range proxies {
+		if (proxy.SecretRef == "") != (proxy.CredentialVersion == "") {
+			return nil, ErrInvalidCredential
+		}
+		if proxy.SecretRef == "" {
+			continue
+		}
+		credential, exists := indexed[credentialKey(proxy.SecretRef, proxy.CredentialVersion)]
+		if !exists || (proxy.Username != "" && credential.Username != "" && proxy.Username != credential.Username) {
+			return nil, ErrInvalidCredential
+		}
+	}
+	return indexed, nil
+}
+
+func credentialKey(secretRef, version string) string { return secretRef + "\x00" + version }
+
+func cloneAndSortCredentials(source []Credential) []Credential {
+	cloned := append([]Credential(nil), source...)
+	sort.Slice(cloned, func(left, right int) bool {
+		if cloned[left].SecretRef == cloned[right].SecretRef {
+			return cloned[left].CredentialVersion < cloned[right].CredentialVersion
+		}
+		return cloned[left].SecretRef < cloned[right].SecretRef
+	})
+	return cloned
+}
+
 func cloneRoutingRules(source []routing.Rule) []routing.Rule {
 	result := make([]routing.Rule, len(source))
 	for index, rule := range source {

internal/gateway/snapshot/store_test.go

@@ -1,9 +1,11 @@
 package snapshot
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"reflect"
+	"strings"
 	"testing"
 	"time"
 
@@ -126,6 +128,35 @@ func TestStorePublishesRoutingWithTheSameSnapshotVersion(t *testing.T) {
 	}
 }
 
+func TestStoreResolvesCredentialOnlyFromCurrentSnapshot(t *testing.T) {
+	store := NewStore("cluster-a", "worker-a")
+	proxy := proxyDomain.Proxy{
+		ID: "proxy-a", Scheme: proxyDomain.SchemeHTTP, Host: "192.0.2.10", Port: 8080, MaxConcurrency: 1,
+		SecretRef: "cred_a", CredentialVersion: "v1", Username: "upstream",
+	}
+	envelope := Envelope{
+		ClusterID: "cluster-a", WorkerID: "worker-a", Epoch: 1, Version: 1, Full: true, Proxies: []proxyDomain.Proxy{proxy},
+		Credentials: []Credential{{SecretRef: "cred_a", CredentialVersion: "v1", Username: "upstream", Password: "secret"}},
+	}
+	envelope.Checksum = ChecksumWithCredentials(envelope.Proxies, envelope.Routing, envelope.Credentials)
+	if err := store.Apply(envelope); err != nil {
+		t.Fatalf("Apply(): %v", err)
+	}
+	credential, err := store.Credential(context.Background(), proxy)
+	if err != nil || credential.Username != "upstream" || credential.Password != "secret" {
+		t.Fatalf("Credential() = (%+v, %v)", credential, err)
+	}
+	if formatted := fmt.Sprintf("%+v", credential); strings.Contains(formatted, "secret") || strings.Contains(formatted, "upstream") {
+		t.Fatalf("formatted credential exposes material: %s", formatted)
+	}
+
+	missing := Envelope{ClusterID: "cluster-a", WorkerID: "worker-a", Epoch: 1, Version: 2, Full: true, Proxies: []proxyDomain.Proxy{proxy}}
+	missing.Checksum = ChecksumWithCredentials(missing.Proxies, nil, nil)
+	if err := store.Apply(missing); !errors.Is(err, ErrInvalidCredential) {
+		t.Fatalf("Apply(missing credential) error = %v, want ErrInvalidCredential", err)
+	}
+}
+
 func TestViewSelectFiltersBySchemeUpstreamTagAndExclude(t *testing.T) {
 	now := time.Date(2026, 7, 28, 12, 0, 0, 0, time.UTC)
 	expiresSoon := now.Add(5 * time.Second)