diff --git a/docs/technical/【后端架构】BgFilter受限资源调度方案-2026-07-21.md b/docs/technical/【后端架构】BgFilter受限资源调度方案-2026-07-21.md
index 752a0871e..dfbd7a900 100644
--- a/docs/technical/【后端架构】BgFilter受限资源调度方案-2026-07-21.md
+++ b/docs/technical/【后端架构】BgFilter受限资源调度方案-2026-07-21.md
@@ -486,6 +486,7 @@ flat / complex 的每次 provider 失败审计都必须留在子 worker，保留
 - worker unit 先加载共享 API env、再加载 worker 专属 env；父子有效 `N` 与 `est` 完全一致（两者都在共享 API env），flat / complex 统一熔断参数只由子 worker 配置和执行，cooldown 默认 `120s`。
 - `external-generation-worker.env` 后加载时不得把内部 base URL、Token / Token 文件、connect timeout、`N`、`est`、OSS bucket 或 endpoint 覆盖为与共享 API env 不同的有效值；父侧必须把源对象写到子 worker 将要签名读取的同一 OSS 位置。外部生成 worker 可使用同 bucket 下权限等价或更小的独立 AK，不要求凭据文本相同。
 - 父进程 `GENARRATIVE_BGFILTER_WORKER_BASE_URL`、子 worker `HOST / PORT` 和部署 readiness URL 必须指向同一个 `127.0.0.1:<port>` endpoint；旧非空配置不能因为“无需补默认值”而绕过一致性检查。
+- deploy 安装的三个 worker systemd unit（bgfilter / worker@ / controller）必须先按 `--current-link` 与各 env 参数渲染再安装（与 provision 的 `render_*_service` 同语义），安装后的 unit 不得残留模板默认的 current 链接或 env 路径字面量；controller env 路径由 `--controller-env-file` 表达。默认参数下渲染输出与模板逐字节一致。
 - `genarrative-bgfilter-worker.service` 必须保持 `TimeoutStopSec=900`，覆盖 `callBudgetMs` 排空上界（约 `321s`）与停止收口余量；停止时排队请求立即类型化失败，不参与排空。
 - 发布目录切换前拒绝缺失、空、含内部空白、包含多个非空行、符号链接或权限错误的内部 Token 文件；允许文件末尾正常换行，父、子有效 Token 文件路径必须相同。
 - 生产运行期巡检同时检查 `genarrative-bgfilter-worker.service` 为 active 且 worker `readyz` 成功（默认 `127.0.0.1:8083`），不能只依赖 systemd 自动重启。provision / deploy 的发布验活 URL 必须从已验证的 env `HOST/PORT` 派生，不得硬编码默认端口；若运维自定义 `GENARRATIVE_BGFILTER_WORKER_PORT`，必须同步覆盖巡检的 `GENARRATIVE_HEALTH_PATROL_BGFILTER_BASE_URL`（巡检是独立进程，不读取 worker env，默认值不会自动跟随）。
diff --git a/scripts/check-production-api-deploy.mjs b/scripts/check-production-api-deploy.mjs
index 3a6749730..d6ccd35d3 100644
--- a/scripts/check-production-api-deploy.mjs
+++ b/scripts/check-production-api-deploy.mjs
@@ -352,15 +352,68 @@ function assertDeployCopiesPingoraDirectReleaseDependencies() {
     ),
     'API deploy 必须把随包 BgFilter worker 单元安装到 systemd unit 目录。',
   );
+  // 安装的 unit 必须按本次部署参数渲染（fixture 全程使用自定义路径）：
+  // 含 fixture 的 current 链接与 env 路径，不得残留模板默认字面量——
+  // 否则自定义 --current-link/env 部署会让服务启动旧二进制或加载默认配置。
+  const renderedUnits = [
+    ['genarrative-bgfilter-worker.service', fixture.bgfilterWorkerEnvFile],
+    [
+      'genarrative-external-generation-worker@.service',
+      fixture.externalGenerationWorkerEnvFile,
+    ],
+    [
+      'genarrative-external-generation-controller.service',
+      fixture.controllerEnvFile,
+    ],
+  ];
+  for (const [unitName, roleEnvFile] of renderedUnits) {
+    const unitContent = readFileSync(
+      path.join(fixture.systemdUnitDir, unitName),
+      'utf8',
+    );
+    assertIncludes(
+      unitContent,
+      `WorkingDirectory=${fixture.currentLink}`,
+      `${unitName} 的工作目录必须渲染为 --current-link。`,
+    );
+    assertIncludes(
+      unitContent,
+      `${fixture.currentLink}/api-server`,
+      `${unitName} 的 ExecStart 必须指向 --current-link 下的二进制。`,
+    );
+    assertIncludes(
+      unitContent,
+      `EnvironmentFile=${fixture.apiEnvFile}`,
+      `${unitName} 必须加载 --api-env-file 指定的共享 env。`,
+    );
+    assertIncludes(
+      unitContent,
+      roleEnvFile,
+      `${unitName} 必须加载本角色 env 参数指定的文件。`,
+    );
+    for (const templateDefault of [
+      '/opt/genarrative/current',
+      '/etc/genarrative/api-server.env',
+      '/etc/genarrative/bgfilter-worker.env',
+      '/etc/genarrative/external-generation-worker.env',
+      '/etc/genarrative/external-generation-controller.env',
+    ]) {
+      if (unitContent.includes(templateDefault)) {
+        failures.push(
+          `${unitName} 安装后不得残留模板默认路径 ${templateDefault}：unit 必须按部署参数渲染。`,
+        );
+      }
+    }
+  }
   const bgfilterUnit = readFileSync(
     path.join(fixture.systemdUnitDir, 'genarrative-bgfilter-worker.service'),
     'utf8',
   );
   const sharedEnvIndex = bgfilterUnit.indexOf(
-    'EnvironmentFile=/etc/genarrative/api-server.env',
+    `EnvironmentFile=${fixture.apiEnvFile}`,
   );
   const dedicatedEnvIndex = bgfilterUnit.indexOf(
-    'EnvironmentFile=/etc/genarrative/bgfilter-worker.env',
+    `EnvironmentFile=${fixture.bgfilterWorkerEnvFile}`,
   );
   if (
     sharedEnvIndex < 0 ||
@@ -1998,6 +2051,11 @@ function prepareFixture(name) {
     'etc',
     'bgfilter-worker.env',
   );
+  const controllerEnvFile = path.join(
+    root,
+    'etc',
+    'external-generation-controller.env',
+  );
   const bgfilterTokenFile = path.join(root, 'etc', 'bgfilter-worker.token');
   const pingoraEnvFile = path.join(root, 'etc', 'pingora-gateway.env');
   const maintenanceFile = path.join(root, 'maintenance', 'enabled');
@@ -2043,6 +2101,11 @@ function prepareFixture(name) {
     'GENARRATIVE_EXTERNAL_GENERATION_WORKER_CONCURRENCY=2\n',
     'utf8',
   );
+  writeFileSync(
+    controllerEnvFile,
+    'GENARRATIVE_EXTERNAL_GENERATION_CONTROLLER_PLACEHOLDER=1\n',
+    'utf8',
+  );
   writeFileSync(
     bgfilterWorkerEnvFile,
     [
@@ -2399,6 +2462,7 @@ function prepareFixture(name) {
     apiEnvFile,
     externalGenerationWorkerEnvFile,
     bgfilterWorkerEnvFile,
+    controllerEnvFile,
     bgfilterTokenFile,
     pingoraEnvFile,
     maintenanceFile,
@@ -2476,6 +2540,8 @@ function runDeploy(fixture, options = {}) {
     fixture.externalGenerationWorkerEnvFile,
     '--bgfilter-worker-env-file',
     fixture.bgfilterWorkerEnvFile,
+    '--controller-env-file',
+    options.controllerEnvFile ?? fixture.controllerEnvFile,
     // 缺省不传 --bgfilter-worker-health-url，与真实 Jenkins 调用一致：
     // 让预检从已校验的 worker env HOST/PORT 派生 readiness URL。
     ...(options.bgfilterWorkerHealthUrl === undefined
diff --git a/scripts/deploy/production-api-deploy.sh b/scripts/deploy/production-api-deploy.sh
index e8d000d6d..b374cd534 100644
--- a/scripts/deploy/production-api-deploy.sh
+++ b/scripts/deploy/production-api-deploy.sh
@@ -5,12 +5,13 @@ set -euo pipefail
 usage() {
   cat <<'EOF'
 用法:
-  ./scripts/deploy/production-api-deploy.sh --source-dir build/<version> [--version <version>] [--release-root /opt/genarrative/releases] [--current-link /opt/genarrative/current] [--service genarrative-api.service] [--pingora-service genarrative-pingora-gateway.service] [--require-pingora-gateway] [--bgfilter-worker-service genarrative-bgfilter-worker.service] [--bgfilter-worker-health-url <url>] [--bgfilter-worker-env-file /etc/genarrative/bgfilter-worker.env] [--no-bgfilter-worker] [--worker-service-pattern 'genarrative-external-generation-worker@*.service'] [--no-worker-services] [--worker-controller-service genarrative-external-generation-controller.service] [--no-worker-controller] [--health-url http://127.0.0.1:8082/readyz] [--api-env-file /etc/genarrative/api-server.env] [--worker-env-file /etc/genarrative/external-generation-worker.env] [--database genarrative-prod] [--spacetime-server-url http://127.0.0.1:3101] [--keep-maintenance-mode]
+  ./scripts/deploy/production-api-deploy.sh --source-dir build/<version> [--version <version>] [--release-root /opt/genarrative/releases] [--current-link /opt/genarrative/current] [--service genarrative-api.service] [--pingora-service genarrative-pingora-gateway.service] [--require-pingora-gateway] [--bgfilter-worker-service genarrative-bgfilter-worker.service] [--bgfilter-worker-health-url <url>] [--bgfilter-worker-env-file /etc/genarrative/bgfilter-worker.env] [--no-bgfilter-worker] [--worker-service-pattern 'genarrative-external-generation-worker@*.service'] [--no-worker-services] [--worker-controller-service genarrative-external-generation-controller.service] [--no-worker-controller] [--health-url http://127.0.0.1:8082/readyz] [--api-env-file /etc/genarrative/api-server.env] [--worker-env-file /etc/genarrative/external-generation-worker.env] [--controller-env-file /etc/genarrative/external-generation-controller.env] [--database genarrative-prod] [--spacetime-server-url http://127.0.0.1:3101] [--keep-maintenance-mode]
 
 说明:
   进入维护模式，校验并发布 api-server 单文件，更新 current 链接，重启 systemd 服务并执行 readiness 检查。
   默认先停止、启动并验活唯一 BgFilter worker，再重启 API、外部生成 worker controller 和已加载的 worker 实例。
   --bgfilter-worker-health-url 缺省时从已校验的 worker env HOST/PORT 派生；显式传入时必须与父子 env 三方一致，否则预检失败。
+  随包 worker systemd unit 按 --current-link 与各 env 参数渲染后安装（与 provision 同语义），自定义路径不会被打回模板默认值；默认参数下渲染输出与模板一致。
   若传入 --database，会在重启前把 GENARRATIVE_SPACETIME_DATABASE 写入 api-server 环境文件，避免服务继续读取旧库。
   若发布包包含 pingora-gateway，或传入 --require-pingora-gateway，部署脚本会要求 release manifest、二进制与 checksum 一致，再在 current 链接切换后先复核 systemd/env 仍是本机高端口 shadow 配置，启动或重启 Pingora 影子服务并复核 active。
   默认在 readiness 通过后退出维护模式；传入 --keep-maintenance-mode 时保留维护文件，供人工验收后再恢复公网。
@@ -896,11 +897,21 @@ ensure_default_worker_service() {
   systemctl enable --now "${default_service}"
 }
 
+escape_sed_replacement() {
+  printf "%s" "$1" | sed "s/[&|]/\\\\&/g"
+}
+
+# 与 provision 的 render_*_service 同语义：unit 文件在仓库里是模板，安装前必须把
+# 默认 current 链接与 env 路径渲染为本次部署参数，自定义 --current-link/env 时
+# 不得让服务启动旧二进制或加载默认 env（默认参数下渲染输出与模板逐字节一致）。
 install_release_systemd_unit() {
   local source_path="$1"
   local unit_name="$2"
   local label="$3"
+  shift 3
   local unit_dir="${GENARRATIVE_SYSTEMD_UNIT_DIR:-/etc/systemd/system}"
+  local sed_args=()
+  local template_default replacement rendered
 
   if [[ ! -f "${source_path}" ]]; then
     echo "[production-api-deploy] 发布产物缺少${label}: ${source_path}" >&2
@@ -910,10 +921,27 @@ install_release_systemd_unit() {
     echo "[production-api-deploy] systemd unit 目录必须使用绝对路径: ${unit_dir}" >&2
     return 1
   fi
+  while [[ $# -gt 0 ]]; do
+    template_default="$1"
+    replacement="${2:?unit 渲染替换必须成对提供模板默认值与实际值}"
+    shift 2
+    if [[ -z "${replacement}" ]]; then
+      echo "[production-api-deploy] ${label} 渲染值不能为空: ${template_default}" >&2
+      return 1
+    fi
+    sed_args+=(-e "s|${template_default}|$(escape_sed_replacement "${replacement}")|g")
+  done
 
+  rendered="$(mktemp)"
+  if [[ "${#sed_args[@]}" -gt 0 ]]; then
+    sed "${sed_args[@]}" "${source_path}" > "${rendered}"
+  else
+    cat "${source_path}" > "${rendered}"
+  fi
   echo "[production-api-deploy] 安装${label}: ${unit_name}"
   run_privileged install -d -m 0755 "${unit_dir}"
-  run_privileged install -m 0644 "${source_path}" "${unit_dir}/${unit_name}"
+  run_privileged install -m 0644 "${rendered}" "${unit_dir}/${unit_name}"
+  rm -f "${rendered}"
 }
 
 install_worker_systemd_units() {
@@ -927,7 +955,10 @@ install_worker_systemd_units() {
     install_release_systemd_unit \
       "${release_dir}/deploy/systemd/genarrative-bgfilter-worker.service" \
       "genarrative-bgfilter-worker.service" \
-      "BgFilter worker systemd 单元"
+      "BgFilter worker systemd 单元" \
+      "/opt/genarrative/current" "${CURRENT_LINK}" \
+      "/etc/genarrative/api-server.env" "${API_ENV_FILE}" \
+      "/etc/genarrative/bgfilter-worker.env" "${BGFILTER_WORKER_ENV_FILE}"
     installed_any=1
   fi
 
@@ -935,7 +966,10 @@ install_worker_systemd_units() {
     install_release_systemd_unit \
       "${release_dir}/deploy/systemd/genarrative-external-generation-worker@.service" \
       "genarrative-external-generation-worker@.service" \
-      "外部生成 worker systemd 模板"
+      "外部生成 worker systemd 模板" \
+      "/opt/genarrative/current" "${CURRENT_LINK}" \
+      "/etc/genarrative/api-server.env" "${API_ENV_FILE}" \
+      "/etc/genarrative/external-generation-worker.env" "${WORKER_ENV_FILE}"
     installed_any=1
   fi
 
@@ -943,7 +977,10 @@ install_worker_systemd_units() {
     install_release_systemd_unit \
       "${release_dir}/deploy/systemd/genarrative-external-generation-controller.service" \
       "genarrative-external-generation-controller.service" \
-      "外部生成 worker controller systemd 单元"
+      "外部生成 worker controller systemd 单元" \
+      "/opt/genarrative/current" "${CURRENT_LINK}" \
+      "/etc/genarrative/api-server.env" "${API_ENV_FILE}" \
+      "/etc/genarrative/external-generation-controller.env" "${CONTROLLER_ENV_FILE}"
     installed_any=1
   fi
 
@@ -1093,6 +1130,8 @@ BGFILTER_WORKER_ENV_FILE="/etc/genarrative/bgfilter-worker.env"
 HEALTH_URL="http://127.0.0.1:8082/readyz"
 API_ENV_FILE="/etc/genarrative/api-server.env"
 WORKER_ENV_FILE="/etc/genarrative/external-generation-worker.env"
+# controller unit 渲染专用：deploy 不读写该 env 内容，只保证安装的 unit 指向正确路径。
+CONTROLLER_ENV_FILE="/etc/genarrative/external-generation-controller.env"
 DATABASE=""
 SPACETIME_SERVER_URL=""
 DEPLOY_COMPLETED=0
@@ -1188,6 +1227,10 @@ while [[ $# -gt 0 ]]; do
       WORKER_ENV_FILE="${2:?缺少 --worker-env-file 的值}"
       shift 2
       ;;
+    --controller-env-file)
+      CONTROLLER_ENV_FILE="${2:?缺少 --controller-env-file 的值}"
+      shift 2
+      ;;
     --database)
       DATABASE="${2:?缺少 --database 的值}"
       shift 2
@@ -1214,6 +1257,9 @@ fi
 if [[ -n "${BGFILTER_WORKER_ENV_FILE}" ]]; then
   require_absolute_path "${BGFILTER_WORKER_ENV_FILE}" "--bgfilter-worker-env-file"
 fi
+if [[ -n "${CONTROLLER_ENV_FILE}" ]]; then
+  require_absolute_path "${CONTROLLER_ENV_FILE}" "--controller-env-file"
+fi
 
 if [[ -n "${DATABASE}" ]]; then
   validate_spacetime_database_name "${DATABASE}"