diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75e88ea0956..6a34a812208 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -40,6 +40,7 @@ Docs: https://docs.openclaw.ai
 
 - Google/Gemini: normalize retired nested Gemini 3 Pro Preview ids while converting manifest catalog rows into emitted provider config, so `google/gemini-3.1-pro-preview` is used for testing instead of `google/gemini-3-pro-preview`.
 - Native apps: advertise the Gateway protocol compatibility range so chat and node sessions can connect to v3 gateways after additive v4 client updates.
+- Gateway/agents: keep stale `sessions_send` ACP manager and `web_fetch` runtime chunks importable after package updates, preventing live gateways from breaking before restart. Fixes #78804. Thanks @Gomesy72.
 - Gateway: avoid synchronous restart-sentinel state probes during post-attach startup, preventing slow Windows or redirected state directories from blocking channel turns. Fixes #79264. Thanks @liyi58.
 - Agents/auth: update successful model auth profile status with one locked store write, reducing post-model reply latency from duplicate `auth-profiles.json` saves. Thanks @mcaxtr.
 - Agents/image: honor explicit `image` tool model overrides even when `agents.defaults.imageModel` is unset, restoring one-off vision calls for configured multimodal providers. Fixes #79341. Thanks @haumanto.
diff --git a/scripts/runtime-postbuild.mjs b/scripts/runtime-postbuild.mjs
index d039ea5b3f8..8161268de29 100644
--- a/scripts/runtime-postbuild.mjs
+++ b/scripts/runtime-postbuild.mjs
@@ -48,6 +48,10 @@ const LEGACY_ROOT_RUNTIME_COMPAT_ALIASES = [
   ["provider-dispatcher-6EQEtc-t.js", "provider-dispatcher.runtime.js"],
   ["provider-dispatcher-BpL2E92x.js", "provider-dispatcher.runtime.js"],
   ["provider-dispatcher-JG96SkLX.js", "provider-dispatcher.runtime.js"],
+  // v2026.5.4 tool/control-plane lazy chunks. These predate the stable
+  // nested dist entries, but live gateways may still import them after update.
+  ["manager-DzRWrKSA.js", "acp/control-plane/manager.js"],
+  ["runtime-CeGN4XUC.js", "web-fetch/runtime.js"],
 ];
 const LEGACY_PLUGIN_INSTALL_RUNTIME_MARKERS = [
   "scanPackageInstallSource",
diff --git a/src/infra/tsdown-config.test.ts b/src/infra/tsdown-config.test.ts
index f172e21a961..1ffb345e103 100644
--- a/src/infra/tsdown-config.test.ts
+++ b/src/infra/tsdown-config.test.ts
@@ -85,6 +85,7 @@ describe("tsdown config", () => {
 
     expect(entryKeys(distGraph)).toEqual(
       expect.arrayContaining([
+        "acp/control-plane/manager",
         "agents/auth-profiles.runtime",
         "agents/model-catalog.runtime",
         "agents/models-config.runtime",
@@ -101,6 +102,7 @@ describe("tsdown config", () => {
         "plugins/provider-discovery.runtime",
         "plugins/provider-runtime.runtime",
         "plugins/runtime/index",
+        "web-fetch/runtime",
         "plugin-sdk/compat",
         "plugin-sdk/index",
         bundledEntry("active-memory"),
diff --git a/test/scripts/runtime-postbuild.test.ts b/test/scripts/runtime-postbuild.test.ts
index bd059376aed..f2fdb6b0bb4 100644
--- a/test/scripts/runtime-postbuild.test.ts
+++ b/test/scripts/runtime-postbuild.test.ts
@@ -654,6 +654,32 @@ describe("runtime postbuild static assets", () => {
     );
   });
 
+  it("writes compatibility aliases for previous tool and ACP manager chunk names", async () => {
+    const rootDir = createTempDir("openclaw-runtime-postbuild-");
+    const distDir = path.join(rootDir, "dist");
+    await fs.mkdir(path.join(distDir, "acp", "control-plane"), { recursive: true });
+    await fs.mkdir(path.join(distDir, "web-fetch"), { recursive: true });
+    await fs.writeFile(
+      path.join(distDir, "acp", "control-plane", "manager.js"),
+      "export const getAcpSessionManager = true;\n",
+      "utf8",
+    );
+    await fs.writeFile(
+      path.join(distDir, "web-fetch", "runtime.js"),
+      "export const resolveWebFetchDefinition = true;\n",
+      "utf8",
+    );
+
+    writeLegacyRootRuntimeCompatAliases({ rootDir });
+
+    expect(await fs.readFile(path.join(distDir, "manager-DzRWrKSA.js"), "utf8")).toBe(
+      'export * from "./acp/control-plane/manager.js";\n',
+    );
+    expect(await fs.readFile(path.join(distDir, "runtime-CeGN4XUC.js"), "utf8")).toBe(
+      'export * from "./web-fetch/runtime.js";\n',
+    );
+  });
+
   it("writes legacy CLI exit compatibility chunks", async () => {
     const rootDir = createTempDir("openclaw-runtime-postbuild-");
 
diff --git a/tsdown.config.ts b/tsdown.config.ts
index f22aa6d6114..d0b215c826c 100644
--- a/tsdown.config.ts
+++ b/tsdown.config.ts
@@ -213,6 +213,7 @@ function buildCoreDistEntries(): Record<string, string> {
     "agents/auth-profiles.runtime": "src/agents/auth-profiles.runtime.ts",
     "agents/model-catalog.runtime": "src/agents/model-catalog.runtime.ts",
     "agents/models-config.runtime": "src/agents/models-config.runtime.ts",
+    "acp/control-plane/manager": "src/acp/control-plane/manager.ts",
     "cli/gateway-lifecycle.runtime": "src/cli/gateway-cli/lifecycle.runtime.ts",
     "provider-dispatcher.runtime": "src/auto-reply/reply/provider-dispatcher.runtime.ts",
     "server-close.runtime": "src/gateway/server-close.runtime.ts",
@@ -228,6 +229,7 @@ function buildCoreDistEntries(): Record<string, string> {
     "infra/boundary-file-read": "src/infra/boundary-file-read.ts",
     "plugins/provider-discovery.runtime": "src/plugins/provider-discovery.runtime.ts",
     "plugins/provider-runtime.runtime": "src/plugins/provider-runtime.runtime.ts",
+    "web-fetch/runtime": "src/web-fetch/runtime.ts",
     "plugins/public-surface-runtime": "src/plugins/public-surface-runtime.ts",
     "plugins/loader": "src/plugins/loader.ts",
     "plugins/sdk-alias": "src/plugins/sdk-alias.ts",