diff --git a/docs/architecture/overview.md b/docs/architecture/overview.md
index b5c3a70..e9348a4 100644
--- a/docs/architecture/overview.md
+++ b/docs/architecture/overview.md
@@ -59,7 +59,7 @@ VM startup metadata 只负责幂等主机供给。应用部署生成不可变 re
 
 ## 当前约束
 
-- `development` 已真实部署并通过 destroy/rebuild、正式发布、回滚和双协议 E2E。
+- `development` 已迁移到专用的 `kyson-proxy-dev` Project，并以 `proxy-*` 资源名完成正式发布和双协议 E2E。
 - `development` 的 bootstrap/platform plan 当前为零变更，GitHub 配置审计通过。
 - `production` 资源与秘密尚未激活，任何写操作仍需显式审批。
 - Cloud Run request log 按精确服务名排除，避免 query token 被平台日志持久化；应用仅记录脱敏事件。
diff --git a/docs/design/environments-and-delivery.md b/docs/design/environments-and-delivery.md
index e8271d2..6b1a94b 100644
--- a/docs/design/environments-and-delivery.md
+++ b/docs/design/environments-and-delivery.md
@@ -2,7 +2,7 @@
 
 本文唯一拥有环境配置归属、GitHub Variables/Secrets 名称、工作流接口以及 VM 与 Cloud Run 的发布协议。
 
-**实现状态：** development GitHub/GCP 已配置，并通过正式部署、协调回滚与双协议 E2E；production 尚未激活。
+**实现状态：** development 已在 `kyson-proxy-dev` 配置 GitHub/GCP，并通过正式部署、协调回滚与双协议 E2E；production 尚未激活。
 
 ## 环境模型
 
@@ -171,7 +171,7 @@ make deploy ENV=<environment> [GIT_REF=<ref>]
 make destroy ENV=<environment> STACK=platform
 ```
 
-命令只作为稳定入口；首次 development 激活步骤见 [Runbook](../runbooks/development-first-activation.md)。
+命令只作为稳定入口；空 development 的首次激活见 [Runbook](../runbooks/development-first-activation.md)，迁移到新的 GCP Project 且复用秘密时见 [项目迁移 Runbook](../runbooks/development-project-migration.md)。
 
 `secrets-init` 只在本地新建五项随机秘密，不发布或调用 GCP；已有目录时拒绝覆盖。用户变更也只改本地 `users.json`，必须随后显式执行 `secrets-publish` 和 `deploy`。`subscription-url` 从 platform state 读取公开服务 URL，从本地文件读取已启用用户 token，并只向终端输出最终 URL。
 
diff --git a/docs/design/infrastructure-and-identity.md b/docs/design/infrastructure-and-identity.md
index a8310f5..53d4149 100644
--- a/docs/design/infrastructure-and-identity.md
+++ b/docs/design/infrastructure-and-identity.md
@@ -2,7 +2,7 @@
 
 本文唯一拥有 OpenTofu 目录、stack/state 划分、模块接口、GCP 资源拓扑以及 IAM/WIF 边界。
 
-**实现状态：** development 已 apply、重建并通过零变更 plan；production 尚未激活
+**实现状态：** development 已在 `kyson-proxy-dev` apply、部署并通过零变更 plan；production 尚未激活
 
 ## 目录接口
 
@@ -55,7 +55,7 @@ environment        = "development" # 或 production
 project_id         = "gcp-project-id"
 region             = "asia-northeast3"
 zone               = "asia-northeast3-a"
-resource_prefix    = "proxy"
+resource_prefix    = "proxy" # 完整资源名前缀，不自动拼接环境
 network_cidr       = "10.20.0.0/24"
 network_tier       = "STANDARD"
 vm_machine_type    = "e2-micro"
@@ -68,6 +68,8 @@ labels             = { application = "proxy-builder", environment = "development
 
 `environment` 只能是 `development` 或 `production`。`labels.application` 与 `labels.environment` 必须应用于支持 label 的所有资源，作为旧资源清理时的归属条件。
 
+`resource_prefix` 是资源 ID 的完整前缀，环境名不参与资源 ID 派生。当前两个环境均为 `proxy`，因此新资源命名为 `proxy-network`、`proxy-vm`、`proxy-subscription`、`proxy-github` 和 `proxy-images`。GitHub 身份为 `proxy-gh-plan`、`proxy-gh-apply`、`proxy-gh-deploy`；运行身份为 `proxy-vm-sa` 与 `proxy-subscription-sa`。Project、GitHub Environment 与 labels 继续承担环境隔离。
+
 名称包含 `_secret`、`password`、`private_key`、`token` 或证书内容的变量禁止进入 OpenTofu 输入。
 
 ## Stack 所有权
diff --git a/docs/runbooks/README.md b/docs/runbooks/README.md
index 324031b..c4202bd 100644
--- a/docs/runbooks/README.md
+++ b/docs/runbooks/README.md
@@ -5,6 +5,7 @@
 | 需求 | 文档 |
 | --- | --- |
 | 首次创建并激活 development 新平台 | [development 首次激活](development-first-activation.md) |
+| 迁移 development 到新的 GCP Project 并复用秘密 | [development 项目迁移](development-project-migration.md) |
 | 新增、启停或轮换 development 用户 | [development 用户管理](development-user-management.md) |
 | 保留 bootstrap 与秘密，重建 development platform | [development platform 重建](development-platform-rebuild.md) |
 
diff --git a/docs/runbooks/development-project-migration.md b/docs/runbooks/development-project-migration.md
new file mode 100644
index 0000000..1d11181
--- /dev/null
+++ b/docs/runbooks/development-project-migration.md
@@ -0,0 +1,70 @@
+# Development 项目迁移
+
+**使用时机：** 把 development 从一个已激活的 GCP Project 迁到另一个 Project，并保留本地应用秘密
+**风险等级：** 极高  
+**最后复核：** 2026-08-24
+
+## 前置条件
+
+- [ ] source 与 target Project ID、目标 `resource_prefix` 已书面确认；不删除任何 GCP Project、Billing 或共享 API。
+- [ ] 本地管理员对两个 Project 有 Owner 权限；`.secrets/development/` 五个文件存在且均为 `0600`。
+- [ ] 所有 development workflow 已结束；`make github-audit ENV=development` 成功。
+- [ ] source platform、bootstrap state bucket 的名称已从 source Project ID 推导，未凭记忆输入。
+
+## 步骤
+
+1. **销毁 source platform**
+
+   在 source tfvars 仍指向旧 Project 时，从 `main` 触发 `destroy.yml`，输入 `environment=development` 和精确 source Project ID。等待 workflow 成功，再以 GCP 控制面确认 VM、Cloud Run、Artifact Registry、Secret Manager 容器和静态 IP 均不存在。
+
+2. **以本地 Owner 清理 source bootstrap 与 state**
+
+   本地 Owner 必须执行此步；GitHub apply 身份不能安全删除自身与 backend 权限。
+
+   ```bash
+   tofu -chdir=infra/stacks/bootstrap init -reconfigure -input=false \
+     -backend-config="bucket=<source-project>-proxy-builder-tfstate" -backend-config="prefix=bootstrap"
+   tofu -chdir=infra/stacks/bootstrap destroy -auto-approve -input=false \
+     -var-file=../../environments/development.tfvars
+   gcloud storage rm --recursive --all-versions "gs://<source-project>-proxy-builder-tfstate/**"
+   gcloud storage buckets delete "gs://<source-project>-proxy-builder-tfstate" --quiet
+   ```
+
+   预期：WIF、GitHub Service Account、自定义 Role、它们的 IAM 绑定和 source state bucket 不存在；已启用 GCP APIs 保留。
+
+3. **切换仓库配置并验证**
+
+   将 development tfvars 的 `project_id` 与完整 `resource_prefix` 更新为 target 值；执行 `make validate`。在 target Project 创建 state bucket，再以本地 Owner apply bootstrap：
+
+   ```bash
+   make bootstrap ENV=development
+   make infra-apply ENV=development STACK=bootstrap
+   make github-configure ENV=development
+   make github-audit ENV=development
+   make secrets-publish ENV=development
+   ```
+
+   预期：GitHub 的 `DEV_` Variables 与 development Environment Variables 全部指向 target Project；秘密值不读取、不重建。
+
+4. **重建并验收 target platform**
+
+   从 GitHub 触发并等待 development 的 bootstrap WIF 验证、platform apply 和 deploy。最后运行 `make infra-plan ENV=development STACK=platform` 与 `make subscription-url ENV=development USER=<user>`；导入新的 URL，确认 Base64/Clash 订阅和 VLESS/Hysteria2 E2E 成功。
+
+## 失败处理
+
+| 现象 | 处理 |
+| --- | --- |
+| source platform destroy 失败 | 停止，修复 OpenTofu 错误；不得手工删除未记录资源。 |
+| source bootstrap/state 清理失败 | 保持 source tfvars，不切换 GitHub Variables；用本地 Owner 修复后重试。 |
+| target bootstrap 失败 | source 已释放时不要回写旧 GitHub 身份；修复 target 权限或 API 后重试。 |
+| target deploy/E2E 失败 | platform 保留，检查 workflow 的脱敏诊断并重新部署；首次发布没有 VM previous release 是预期边界。 |
+
+## 成功标准
+
+- source 不存在本项目 platform、bootstrap identity 或 state bucket；source GCP APIs 与 Project 保留。
+- target 的 GitHub audit 成功、platform 第二次 plan 为零变更、五项秘密原样保留。
+- target Cloud Run `/v1/health`、两种订阅格式和双协议 E2E 全部成功；旧订阅 URL 停止使用。
+
+## 关联
+
+- Design：[基础设施与身份](../design/infrastructure-and-identity.md)、[环境与交付](../design/environments-and-delivery.md)
diff --git a/infra/environments/development.tfvars b/infra/environments/development.tfvars
index ed878bc..bcc526b 100644
--- a/infra/environments/development.tfvars
+++ b/infra/environments/development.tfvars
@@ -1,5 +1,5 @@
 environment          = "development"
-project_id           = "kyson-lab"
+project_id           = "kyson-proxy-dev"
 region               = "us-west1"
 zone                 = "us-west1-b"
 resource_prefix      = "proxy"
diff --git a/infra/modules/artifact_registry/main.tf b/infra/modules/artifact_registry/main.tf
index 6d474b9..58d9767 100644
--- a/infra/modules/artifact_registry/main.tf
+++ b/infra/modules/artifact_registry/main.tf
@@ -1,6 +1,5 @@
 locals {
-  environment_short = var.environment == "production" ? "prod" : "dev"
-  repository_id     = "${var.resource_prefix}-${local.environment_short}-images"
+  repository_id = "${var.resource_prefix}-images"
 }
 
 resource "google_artifact_registry_repository" "images" {
diff --git a/infra/modules/github_identity/main.tf b/infra/modules/github_identity/main.tf
index a625857..44d0684 100644
--- a/infra/modules/github_identity/main.tf
+++ b/infra/modules/github_identity/main.tf
@@ -1,8 +1,7 @@
 locals {
-  environment_short = var.environment == "production" ? "prod" : "dev"
-  name_prefix       = "${var.resource_prefix}-${local.environment_short}"
-  environment_sub   = "repo:${var.github_repository}:environment:${var.environment}"
-  pull_request_sub  = "repo:${var.github_repository}:pull_request"
+  name_prefix      = var.resource_prefix
+  environment_sub  = "repo:${var.github_repository}:environment:${var.environment}"
+  pull_request_sub = "repo:${var.github_repository}:pull_request"
 
   required_services = toset([
     "artifactregistry.googleapis.com",
@@ -90,7 +89,7 @@ resource "google_service_account" "github" {
 
 resource "google_project_iam_custom_role" "secret_metadata_admin" {
   project     = var.project_id
-  role_id     = "${replace(title(var.resource_prefix), "-", "")}${title(local.environment_short)}SecretMetadataAdmin"
+  role_id     = "${replace(title(var.resource_prefix), "-", "")}SecretMetadataAdmin"
   title       = "Proxy secret metadata admin (${var.environment})"
   description = "Manage Secret Manager containers and IAM without reading payloads"
   stage       = "GA"
@@ -121,7 +120,7 @@ resource "google_project_iam_custom_role" "state_iam" {
   }
 
   project     = var.project_id
-  role_id     = "${replace(title(var.resource_prefix), "-", "")}${title(local.environment_short)}StateIam${title(each.key)}"
+  role_id     = "${replace(title(var.resource_prefix), "-", "")}StateIam${title(each.key)}"
   title       = "Proxy state IAM ${each.key} (${var.environment})"
   description = "Read or manage the proxy-builder state bucket IAM policy"
   stage       = "GA"
diff --git a/infra/modules/network/main.tf b/infra/modules/network/main.tf
index 891548f..4e697fe 100644
--- a/infra/modules/network/main.tf
+++ b/infra/modules/network/main.tf
@@ -1,7 +1,6 @@
 locals {
-  environment_short = var.environment == "production" ? "prod" : "dev"
-  name_prefix       = "${var.resource_prefix}-${local.environment_short}"
-  proxy_tag         = "${local.name_prefix}-proxy"
+  name_prefix = var.resource_prefix
+  proxy_tag   = "${local.name_prefix}-vm"
 }
 
 resource "google_compute_network" "proxy" {
diff --git a/infra/modules/proxy_vm/main.tf b/infra/modules/proxy_vm/main.tf
index 9bba5b6..42703d5 100644
--- a/infra/modules/proxy_vm/main.tf
+++ b/infra/modules/proxy_vm/main.tf
@@ -1,8 +1,7 @@
 locals {
-  environment_short = var.environment == "production" ? "prod" : "dev"
-  name_prefix       = "${var.resource_prefix}-${local.environment_short}"
-  startup_script    = file("${path.module}/files/startup.sh")
-  startup_sha256    = sha256(local.startup_script)
+  name_prefix    = var.resource_prefix
+  startup_script = file("${path.module}/files/startup.sh")
+  startup_sha256 = sha256(local.startup_script)
 }
 
 data "google_compute_image" "debian" {
@@ -12,7 +11,7 @@ data "google_compute_image" "debian" {
 
 resource "google_service_account" "runtime" {
   project      = var.project_id
-  account_id   = "${local.name_prefix}-proxy"
+  account_id   = "${local.name_prefix}-vm-sa"
   display_name = "Proxy runtime (${var.environment})"
   description  = "Runtime identity for the proxy VM; no project roles"
 }
diff --git a/infra/modules/proxy_vm/tests/contracts.tftest.hcl b/infra/modules/proxy_vm/tests/contracts.tftest.hcl
index 1f4d0ba..c52e346 100644
--- a/infra/modules/proxy_vm/tests/contracts.tftest.hcl
+++ b/infra/modules/proxy_vm/tests/contracts.tftest.hcl
@@ -24,11 +24,11 @@ run "startup_metadata_contract" {
     machine_type                 = "e2-micro"
     boot_disk_gb                 = 10
     network_tier                 = "STANDARD"
-    subnetwork_self_link         = "projects/example-project/regions/us-west1/subnetworks/proxy-dev"
+    subnetwork_self_link         = "projects/example-project/regions/us-west1/subnetworks/proxy-subnet"
     external_ip_address          = "203.0.113.10"
-    network_tag                  = "proxy-dev-proxy"
+    network_tag                  = "proxy-vm"
     labels                       = { application = "proxy-builder", environment = "development" }
-    deploy_service_account_email = "proxy-dev-gh-deploy@example-project.iam.gserviceaccount.com"
+    deploy_service_account_email = "proxy-gh-deploy@example-project.iam.gserviceaccount.com"
   }
 
   assert {
@@ -48,4 +48,9 @@ run "startup_metadata_contract" {
     )
     error_message = "deploy 身份必须只能 actAs 当前环境的 VM runtime service account。"
   }
+
+  assert {
+    condition     = google_service_account.runtime.account_id == "proxy-vm-sa"
+    error_message = "VM runtime service account 必须使用完整 resource_prefix 的 proxy-vm-sa 命名。"
+  }
 }
diff --git a/infra/modules/secret_runtime/main.tf b/infra/modules/secret_runtime/main.tf
index c610ffb..483db22 100644
--- a/infra/modules/secret_runtime/main.tf
+++ b/infra/modules/secret_runtime/main.tf
@@ -1,6 +1,5 @@
 locals {
-  environment_short = var.environment == "production" ? "prod" : "dev"
-  name_prefix       = "${var.resource_prefix}-${local.environment_short}"
+  name_prefix = var.resource_prefix
 
   secrets = {
     proxy_users = "${local.name_prefix}-proxy-users"
@@ -10,7 +9,7 @@ locals {
 
 resource "google_service_account" "runtime" {
   project      = var.project_id
-  account_id   = "${local.name_prefix}-subscription"
+  account_id   = "${local.name_prefix}-subscription-sa"
   display_name = "Subscription runtime (${var.environment})"
   description  = "Runtime identity for the Cloud Run subscription service"
 }
diff --git a/infra/modules/subscription_service/main.tf b/infra/modules/subscription_service/main.tf
index c7da7ce..96f730e 100644
--- a/infra/modules/subscription_service/main.tf
+++ b/infra/modules/subscription_service/main.tf
@@ -1,6 +1,5 @@
 locals {
-  environment_short = var.environment == "production" ? "prod" : "dev"
-  service_name      = "${var.resource_prefix}-${local.environment_short}-subscription"
+  service_name = "${var.resource_prefix}-subscription"
 }
 
 resource "google_cloud_run_v2_service" "subscription" {
diff --git a/infra/modules/subscription_service/tests/contracts.tftest.hcl b/infra/modules/subscription_service/tests/contracts.tftest.hcl
index 5e4003b..f39d9c4 100644
--- a/infra/modules/subscription_service/tests/contracts.tftest.hcl
+++ b/infra/modules/subscription_service/tests/contracts.tftest.hcl
@@ -34,14 +34,14 @@ run "startup_probe_contract" {
   }
 
   assert {
-    condition     = google_logging_project_exclusion.subscription_requests.name == "proxy-dev-subscription-request-logs"
-    error_message = "日志排除名称必须隔离环境。"
+    condition     = google_logging_project_exclusion.subscription_requests.name == "proxy-subscription-request-logs"
+    error_message = "日志排除名称必须从完整 resource_prefix 推导。"
   }
 
   assert {
     condition = alltrue([
       strcontains(google_logging_project_exclusion.subscription_requests.filter, "cloud_run_revision"),
-      strcontains(google_logging_project_exclusion.subscription_requests.filter, "proxy-dev-subscription"),
+      strcontains(google_logging_project_exclusion.subscription_requests.filter, "proxy-subscription"),
       strcontains(google_logging_project_exclusion.subscription_requests.filter, "run.googleapis.com/requests"),
     ])
     error_message = "日志排除必须只匹配当前 subscription 服务的 Cloud Run request log。"
diff --git a/infra/stacks/bootstrap/tests/contracts.tftest.hcl b/infra/stacks/bootstrap/tests/contracts.tftest.hcl
index c35238a..7ab032d 100644
--- a/infra/stacks/bootstrap/tests/contracts.tftest.hcl
+++ b/infra/stacks/bootstrap/tests/contracts.tftest.hcl
@@ -70,11 +70,11 @@ run "identity_contract" {
 
   assert {
     condition = module.github_identity.environment_isolation_contract == {
-      pool_id = "${var.resource_prefix}-${var.environment == "production" ? "prod" : "dev"}-github"
+      pool_id = "${var.resource_prefix}-github"
       service_account_ids = {
-        plan   = "${var.resource_prefix}-${var.environment == "production" ? "prod" : "dev"}-gh-plan"
-        apply  = "${var.resource_prefix}-${var.environment == "production" ? "prod" : "dev"}-gh-apply"
-        deploy = "${var.resource_prefix}-${var.environment == "production" ? "prod" : "dev"}-gh-deploy"
+        plan   = "${var.resource_prefix}-gh-plan"
+        apply  = "${var.resource_prefix}-gh-apply"
+        deploy = "${var.resource_prefix}-gh-deploy"
       }
       environment_wif_members = {
         apply  = "principal://iam.googleapis.com/projects/123456789/locations/global/workloadIdentityPools/mock-pool/subject/repo:${var.github_repository}:environment:${var.environment}"
diff --git a/infra/stacks/bootstrap/variables.tf b/infra/stacks/bootstrap/variables.tf
index b65df5f..963e0a3 100644
--- a/infra/stacks/bootstrap/variables.tf
+++ b/infra/stacks/bootstrap/variables.tf
@@ -34,7 +34,7 @@ variable "resource_prefix" {
 
   validation {
     condition     = can(regex("^[a-z][a-z0-9-]{1,12}[a-z0-9]$", var.resource_prefix))
-    error_message = "resource_prefix 必须是 3-14 位小写字母、数字或连字符。"
+    error_message = "resource_prefix 必须是完整资源名前缀，且为 3-14 位小写字母、数字或连字符。"
   }
 }
 
diff --git a/infra/stacks/platform/tests/contracts.tftest.hcl b/infra/stacks/platform/tests/contracts.tftest.hcl
index 276351f..4ad65d6 100644
--- a/infra/stacks/platform/tests/contracts.tftest.hcl
+++ b/infra/stacks/platform/tests/contracts.tftest.hcl
@@ -20,13 +20,13 @@ run "platform_contract" {
   command = plan
 
   assert {
-    condition     = module.network.proxy_network_tag == "${var.resource_prefix}-${var.environment == "production" ? "prod" : "dev"}-proxy"
-    error_message = "proxy network tag 必须包含环境缩写。"
+    condition     = module.network.proxy_network_tag == "${var.resource_prefix}-vm"
+    error_message = "proxy network tag 必须从完整 resource_prefix 派生。"
   }
 
   assert {
-    condition     = module.artifact_registry.repository_id == "${var.resource_prefix}-${var.environment == "production" ? "prod" : "dev"}-images"
-    error_message = "Artifact Registry 名称必须包含环境缩写。"
+    condition     = module.artifact_registry.repository_id == "${var.resource_prefix}-images"
+    error_message = "Artifact Registry 名称必须从完整 resource_prefix 派生。"
   }
 
   assert {
@@ -54,7 +54,7 @@ run "platform_contract" {
 
 
   assert {
-    condition     = output.subscription_request_log_exclusion_name == "${var.resource_prefix}-${var.environment == "production" ? "prod" : "dev"}-subscription-request-logs"
-    error_message = "platform 必须公开环境隔离的 subscription 请求日志排除名称。"
+    condition     = output.subscription_request_log_exclusion_name == "${var.resource_prefix}-subscription-request-logs"
+    error_message = "platform 必须公开从完整 resource_prefix 派生的 subscription 请求日志排除名称。"
   }
 }
diff --git a/infra/stacks/platform/variables.tf b/infra/stacks/platform/variables.tf
index b65df5f..963e0a3 100644
--- a/infra/stacks/platform/variables.tf
+++ b/infra/stacks/platform/variables.tf
@@ -34,7 +34,7 @@ variable "resource_prefix" {
 
   validation {
     condition     = can(regex("^[a-z][a-z0-9-]{1,12}[a-z0-9]$", var.resource_prefix))
-    error_message = "resource_prefix 必须是 3-14 位小写字母、数字或连字符。"
+    error_message = "resource_prefix 必须是完整资源名前缀，且为 3-14 位小写字母、数字或连字符。"
   }
 }
 
diff --git a/scripts/infra/test-guards.sh b/scripts/infra/test-guards.sh
index ead179b..e6cd6c3 100755
--- a/scripts/infra/test-guards.sh
+++ b/scripts/infra/test-guards.sh
@@ -32,5 +32,12 @@ production_file=$(infra::require_environment production)
 development_project=$(infra::read_tfvar "$development_file" project_id)
 production_project=$(infra::read_tfvar "$production_file" project_id)
 [[ "$development_project" != "$production_project" ]] || infra::die "两个环境不能共用 GCP Project"
+[[ "$development_project" == "kyson-proxy-dev" ]] || infra::die "development 必须使用 kyson-proxy-dev Project"
+[[ "$(infra::read_tfvar "$development_file" resource_prefix)" == "proxy" ]] || infra::die "development 必须使用 proxy 完整资源名前缀"
+[[ "$(infra::read_tfvar "$production_file" resource_prefix)" == "proxy" ]] || infra::die "production 必须使用 proxy 完整资源名前缀"
+
+if rg -q 'environment_short' "${INFRA_ROOT}/infra/modules"; then
+    infra::die "资源模块不得从 environment 自动追加资源名后缀"
+fi
 
 printf '基础设施保护条件测试通过\n'