diff --git a/scripts/lib/ci-node-test-plan.mjs b/scripts/lib/ci-node-test-plan.mjs
index 554f05b63412..8ac4b692282f 100644
--- a/scripts/lib/ci-node-test-plan.mjs
+++ b/scripts/lib/ci-node-test-plan.mjs
@@ -1,5 +1,6 @@
 // Builds CI node/Vitest shard plans from the full suite configuration.
 import { relative } from "node:path";
+import { agentsCoreIsolatedTestFiles } from "../../test/vitest/vitest.agents-paths.mjs";
 import { commandsLightTestFiles } from "../../test/vitest/vitest.commands-light-paths.mjs";
 import { fullSuiteVitestShards } from "../../test/vitest/vitest.test-shards.mjs";
 import { toolingIsolatedTestFiles } from "../../test/vitest/vitest.tooling-isolated-paths.mjs";
@@ -280,17 +281,18 @@ function resolveAgentCoreShardName(file) {
 }
 
 function createAgentCoreSplitShards() {
+  const isolatedTests = new Set(agentsCoreIsolatedTestFiles);
   const groups = new Map();
   for (const file of listTestFiles("src/agents")) {
     const name = relative("src/agents", file).replaceAll("\\", "/");
-    if (name.includes("/")) {
+    if (name.includes("/") || isolatedTests.has(file)) {
       continue;
     }
     const shardName = resolveAgentCoreShardName(file);
     groups.set(shardName, [...(groups.get(shardName) ?? []), file]);
   }
 
-  return [
+  const sharedShards = [
     "agentic-agents-core-auth",
     "agentic-agents-core-models",
     "agentic-agents-core-tools",
@@ -305,6 +307,16 @@ function createAgentCoreSplitShards() {
       shardName,
     }))
     .filter((shard) => shard.includePatterns.length > 0);
+
+  return [
+    ...sharedShards,
+    {
+      configs: ["test/vitest/vitest.agents-core-isolated.config.ts"],
+      includePatterns: agentsCoreIsolatedTestFiles,
+      requiresDist: false,
+      shardName: "agentic-agents-core-isolated",
+    },
+  ];
 }
 
 const GATEWAY_SERVER_BACKED_HTTP_TESTS = new Set([
diff --git a/scripts/test-projects.test-support.mjs b/scripts/test-projects.test-support.mjs
index cbc26018f732..ef1d620279e2 100644
--- a/scripts/test-projects.test-support.mjs
+++ b/scripts/test-projects.test-support.mjs
@@ -6,6 +6,10 @@ import { randomUUID } from "node:crypto";
 import fs from "node:fs";
 import os from "node:os";
 import path from "node:path";
+import {
+  agentsCoreIsolatedTestFiles,
+  isAgentsCoreIsolatedTestFile,
+} from "../test/vitest/vitest.agents-paths.mjs";
 import { isChannelSurfaceTestFile } from "../test/vitest/vitest.channel-paths.mjs";
 import {
   commandsLightTestFiles,
@@ -70,6 +74,7 @@ import {
 } from "./run-vitest.mjs";
 
 const DEFAULT_VITEST_CONFIG = "test/vitest/vitest.unit.config.ts";
+const AGENTS_CORE_ISOLATED_VITEST_CONFIG = "test/vitest/vitest.agents-core-isolated.config.ts";
 const AGENTS_CORE_VITEST_CONFIG = "test/vitest/vitest.agents-core.config.ts";
 const AGENTS_EMBEDDED_AGENT_VITEST_CONFIG = "test/vitest/vitest.agents-embedded-agent.config.ts";
 const AGENTS_SUPPORT_VITEST_CONFIG = "test/vitest/vitest.agents-support.config.ts";
@@ -314,6 +319,7 @@ const VITEST_CONFIG_BY_KIND = {
   agentSupport: AGENTS_SUPPORT_VITEST_CONFIG,
   agentTools: AGENTS_TOOLS_VITEST_CONFIG,
   agent: AGENTS_VITEST_CONFIG,
+  agentsCoreIsolated: AGENTS_CORE_ISOLATED_VITEST_CONFIG,
   agentsCore: AGENTS_CORE_VITEST_CONFIG,
   agentsSupport: AGENTS_SUPPORT_VITEST_CONFIG,
   agentsTools: AGENTS_TOOLS_VITEST_CONFIG,
@@ -2563,6 +2569,7 @@ function listUnitFastFullSuiteTestTargets() {
 }
 
 function listAgentsCoreFullSuiteTestTargets(cwd) {
+  const isolatedTests = new Set(agentsCoreIsolatedTestFiles);
   const agentsDir = path.join(cwd, "src/agents");
   if (!fs.existsSync(agentsDir)) {
     return [];
@@ -2571,6 +2578,7 @@ function listAgentsCoreFullSuiteTestTargets(cwd) {
     .readdirSync(agentsDir, { withFileTypes: true })
     .filter((entry) => entry.isFile() && entry.name.endsWith(".test.ts"))
     .map((entry) => `src/agents/${entry.name}`)
+    .filter((file) => !isolatedTests.has(file))
     .toSorted((left, right) => left.localeCompare(right));
 }
 
@@ -3758,6 +3766,9 @@ function classifyTarget(arg, cwd) {
   if (configTargetKind) {
     return configTargetKind;
   }
+  if (isAgentsCoreIsolatedTestFile(relative)) {
+    return "agentsCoreIsolated";
+  }
   if (isControlUiE2eTarget(relative)) {
     return "uiE2e";
   }
@@ -4205,6 +4216,7 @@ export function buildVitestRunPlans(
     "agentSupport",
     "agentTools",
     "agent",
+    "agentsCoreIsolated",
     "agentsCore",
     "agentsSupport",
     "agentsTools",
diff --git a/test/scripts/ci-node-test-plan.test.ts b/test/scripts/ci-node-test-plan.test.ts
index d19312dc30a9..078b052064a8 100644
--- a/test/scripts/ci-node-test-plan.test.ts
+++ b/test/scripts/ci-node-test-plan.test.ts
@@ -184,8 +184,8 @@ describe("scripts/lib/ci-node-test-plan.mjs", () => {
       compact: true,
     });
 
-    expect(compact).toHaveLength(15);
-    expect(compact.filter((shard) => !shard.requiresDist)).toHaveLength(14);
+    expect(compact).toHaveLength(16);
+    expect(compact.filter((shard) => !shard.requiresDist)).toHaveLength(15);
     expect(compact.every((shard) => Array.isArray(shard.groups))).toBe(true);
     expect(compact.some((shard) => shard.requiresDist)).toBe(true);
     expect(
@@ -874,6 +874,14 @@ describe("scripts/lib/ci-node-test-plan.mjs", () => {
         runner: DEFAULT_NODE_TEST_RUNNER,
         shardName: "agentic-agents-core-runtime",
       },
+      {
+        checkName: "checks-node-agentic-agents-core-isolated",
+        configs: ["test/vitest/vitest.agents-core-isolated.config.ts"],
+        includePatterns: agentShards[6]?.includePatterns,
+        requiresDist: false,
+        runner: DEFAULT_NODE_TEST_RUNNER,
+        shardName: "agentic-agents-core-isolated",
+      },
       {
         checkName: "checks-node-agentic-agents-embedded",
         configs: ["test/vitest/vitest.agents-embedded-agent.config.ts"],
diff --git a/test/scripts/test-projects.test.ts b/test/scripts/test-projects.test.ts
index cf9bd852d60a..7b7e43e97c47 100644
--- a/test/scripts/test-projects.test.ts
+++ b/test/scripts/test-projects.test.ts
@@ -31,6 +31,7 @@ import {
 } from "../../scripts/test-projects.test-support.mjs";
 import { captureReaddirSyncCallsDuring } from "../../src/test-utils/fs-scan-assertions.js";
 import { toRepoPath } from "../../src/test-utils/repo-files.js";
+import { agentsCoreIsolatedTestFiles } from "../vitest/vitest.agents-paths.mjs";
 import {
   channelConfigContractPatterns,
   channelRegistryContractPatterns,
@@ -2466,6 +2467,34 @@ describe("scripts/test-projects changed-target routing", () => {
     ]);
   });
 
+  it.each([
+    "test/scripts/check-extension-package-tsc-boundary.test.ts",
+    "test/scripts/control-ui-i18n.test.ts",
+  ])("routes process-group test %s to the isolated tooling shard", (testFile) => {
+    expect(buildVitestRunPlans([testFile])).toEqual([
+      {
+        config: "test/vitest/vitest.tooling-isolated.config.ts",
+        forwardedArgs: [],
+        includePatterns: [testFile],
+        watchMode: false,
+      },
+    ]);
+  });
+
+  it.each(agentsCoreIsolatedTestFiles)(
+    "routes isolated agent test %s to the isolated agents-core shard",
+    (testFile) => {
+      expect(buildVitestRunPlans([testFile])).toEqual([
+        {
+          config: "test/vitest/vitest.agents-core-isolated.config.ts",
+          forwardedArgs: [],
+          includePatterns: [testFile],
+          watchMode: false,
+        },
+      ]);
+    },
+  );
+
   it("routes Docker E2E script targets to their owner tooling tests", () => {
     const targets = [
       "scripts/e2e/kitchen-sink-plugin-docker.sh",
@@ -2693,7 +2722,11 @@ describe("scripts/test-projects changed-target routing", () => {
       {
         config: "test/vitest/vitest.tooling-isolated.config.ts",
         forwardedArgs: [],
-        includePatterns: ["test/scripts/openclaw-e2e-instance.test.ts"],
+        includePatterns: [
+          "test/scripts/check-extension-package-tsc-boundary.test.ts",
+          "test/scripts/control-ui-i18n.test.ts",
+          "test/scripts/openclaw-e2e-instance.test.ts",
+        ],
         watchMode: false,
       },
     ]);
@@ -2837,7 +2870,11 @@ describe("scripts/test-projects changed-target routing", () => {
       {
         config: "test/vitest/vitest.tooling-isolated.config.ts",
         forwardedArgs: [],
-        includePatterns: ["test/scripts/openclaw-e2e-instance.test.ts"],
+        includePatterns: [
+          "test/scripts/check-extension-package-tsc-boundary.test.ts",
+          "test/scripts/control-ui-i18n.test.ts",
+          "test/scripts/openclaw-e2e-instance.test.ts",
+        ],
         watchMode: false,
       },
     ]);
@@ -3404,7 +3441,7 @@ describe("scripts/test-projects changed-target routing", () => {
       ]),
     ).toEqual([
       {
-        config: "test/vitest/vitest.tooling.config.ts",
+        config: "test/vitest/vitest.tooling-isolated.config.ts",
         forwardedArgs: [],
         includePatterns: ["test/scripts/control-ui-i18n.test.ts"],
         watchMode: false,
@@ -4461,6 +4498,7 @@ describe("scripts/test-projects full-suite sharding", () => {
       "test/vitest/vitest.cli.config.ts",
       "test/vitest/vitest.commands-light.config.ts",
       "test/vitest/vitest.commands.config.ts",
+      "test/vitest/vitest.agents-core-isolated.config.ts",
       ...agentsCorePlans.map(() => agentsCoreConfig),
       "test/vitest/vitest.agents-embedded-agent.config.ts",
       "test/vitest/vitest.agents-support.config.ts",
diff --git a/test/vitest-scoped-config.test.ts b/test/vitest-scoped-config.test.ts
index 6a09800a458c..1cf667606872 100644
--- a/test/vitest-scoped-config.test.ts
+++ b/test/vitest-scoped-config.test.ts
@@ -7,6 +7,9 @@ import { describe, expect, it } from "vitest";
 import { cleanupTempDirs, makeTempDir } from "./helpers/temp-dir.js";
 import { normalizeConfigPath, normalizeConfigPaths } from "./helpers/vitest-config-paths.js";
 import { createAcpVitestConfig } from "./vitest/vitest.acp.config.ts";
+import { createAgentsCoreIsolatedVitestConfig } from "./vitest/vitest.agents-core-isolated.config.ts";
+import { createAgentsCoreVitestConfig } from "./vitest/vitest.agents-core.config.ts";
+import { agentsCoreIsolatedTestFiles } from "./vitest/vitest.agents-paths.mjs";
 import { createAgentsVitestConfig } from "./vitest/vitest.agents.config.ts";
 import { createAutoReplyCoreVitestConfig } from "./vitest/vitest.auto-reply-core.config.ts";
 import { createAutoReplyReplyVitestConfig } from "./vitest/vitest.auto-reply-reply.config.ts";
@@ -566,6 +569,8 @@ describe("scoped vitest configs", () => {
   const defaultAutoReplyTopLevelConfig = createAutoReplyTopLevelVitestConfig({});
   const defaultAutoReplyReplyConfig = createAutoReplyReplyVitestConfig({});
   const defaultAgentsConfig = createAgentsVitestConfig({});
+  const defaultAgentsCoreConfig = createAgentsCoreVitestConfig({});
+  const defaultAgentsCoreIsolatedConfig = createAgentsCoreIsolatedVitestConfig({});
   const defaultPluginsConfig = createPluginsVitestConfig({});
   const defaultProcessConfig = createProcessVitestConfig({});
   const defaultToolingDockerConfig = createToolingDockerVitestConfig({});
@@ -638,6 +643,19 @@ describe("scoped vitest configs", () => {
     );
   });
 
+  it("isolates media task status suites from conflicting task-runtime mocks", () => {
+    const sharedConfig = requireTestConfig(defaultAgentsCoreConfig);
+    const isolatedConfig = requireTestConfig(defaultAgentsCoreIsolatedConfig);
+
+    const scopedIsolatedFiles = agentsCoreIsolatedTestFiles.map((file) =>
+      file.replace("src/agents/", ""),
+    );
+    expect(sharedConfig.exclude).toEqual(expect.arrayContaining(scopedIsolatedFiles));
+    expect(isolatedConfig.include).toEqual(scopedIsolatedFiles);
+    expect(isolatedConfig.isolate).toBe(true);
+    expect(isolatedConfig.runner).toBeUndefined();
+  });
+
   it("keeps selected plugin-sdk and commands light lanes off the openclaw runtime setup", () => {
     expect(normalizeConfigPaths(requireTestConfig(defaultPluginSdkLightConfig).setupFiles)).toEqual(
       ["test/setup.ts"],
diff --git a/test/vitest/vitest.agents-core-isolated.config.ts b/test/vitest/vitest.agents-core-isolated.config.ts
new file mode 100644
index 000000000000..bd4a82f6d114
--- /dev/null
+++ b/test/vitest/vitest.agents-core-isolated.config.ts
@@ -0,0 +1,16 @@
+// Vitest agents core isolated config separates suites with conflicting module mocks.
+import { agentsCoreIsolatedTestFiles } from "./vitest.agents-paths.mjs";
+import { createScopedVitestConfig } from "./vitest.scoped-config.ts";
+
+export function createAgentsCoreIsolatedVitestConfig(env?: Record<string, string | undefined>) {
+  return createScopedVitestConfig(agentsCoreIsolatedTestFiles, {
+    dir: "src/agents",
+    env,
+    isolate: true,
+    name: "agents-core-isolated",
+    passWithNoTests: true,
+    useNonIsolatedRunner: false,
+  });
+}
+
+export default createAgentsCoreIsolatedVitestConfig();
diff --git a/test/vitest/vitest.agents-core.config.ts b/test/vitest/vitest.agents-core.config.ts
index 464ab687914e..64cc69afb780 100644
--- a/test/vitest/vitest.agents-core.config.ts
+++ b/test/vitest/vitest.agents-core.config.ts
@@ -1,11 +1,12 @@
 // Vitest agents core config wires the agents core test shard.
-import { agentsCoreTestPatterns } from "./vitest.agents-paths.mjs";
+import { agentsCoreIsolatedTestFiles, agentsCoreTestPatterns } from "./vitest.agents-paths.mjs";
 import { createScopedVitestConfig } from "./vitest.scoped-config.ts";
 
 export function createAgentsCoreVitestConfig(env?: Record<string, string | undefined>) {
   return createScopedVitestConfig(agentsCoreTestPatterns, {
     dir: "src/agents",
     env,
+    exclude: agentsCoreIsolatedTestFiles,
     fileParallelism: false,
     name: "agents-core",
   });
diff --git a/test/vitest/vitest.agents-paths.d.mts b/test/vitest/vitest.agents-paths.d.mts
index 6de0033a249b..6baed749ec2f 100644
--- a/test/vitest/vitest.agents-paths.d.mts
+++ b/test/vitest/vitest.agents-paths.d.mts
@@ -1,4 +1,6 @@
 export const agentsAllTestPatterns: string[];
+export const agentsCoreIsolatedTestFiles: string[];
+export function isAgentsCoreIsolatedTestFile(file: string): boolean;
 export const agentsCoreTestPatterns: string[];
 export const agentsEmbeddedTestPatterns: string[];
 export const agentsToolsTestPatterns: string[];
diff --git a/test/vitest/vitest.agents-paths.mjs b/test/vitest/vitest.agents-paths.mjs
index cc9bd295e45d..379f59b598f6 100644
--- a/test/vitest/vitest.agents-paths.mjs
+++ b/test/vitest/vitest.agents-paths.mjs
@@ -1,6 +1,20 @@
 // Test routing globs for agent core, embedded-agent, tool, and support suites.
 export const agentsAllTestPatterns = ["src/agents/**/*.test.ts"];
 
+// These suites install different mocks for the same task-runtime module. Keep
+// their module graphs separate from the shared agents-core worker.
+export const agentsCoreIsolatedTestFiles = [
+  "src/agents/image-generation-task-status.test.ts",
+  "src/agents/media-generation-task-status-shared.test.ts",
+  "src/agents/video-generation-task-status.test.ts",
+];
+
+const agentsCoreIsolatedTestFileSet = new Set(agentsCoreIsolatedTestFiles);
+
+export function isAgentsCoreIsolatedTestFile(value) {
+  return agentsCoreIsolatedTestFileSet.has(value.replaceAll("\\", "/"));
+}
+
 export const agentsCoreTestPatterns = ["src/agents/*.test.ts"];
 
 export const agentsEmbeddedTestPatterns = ["src/agents/embedded-agent-runner/**/*.test.ts"];
diff --git a/test/vitest/vitest.config.ts b/test/vitest/vitest.config.ts
index f77e7e468bc5..c3201f03928a 100644
--- a/test/vitest/vitest.config.ts
+++ b/test/vitest/vitest.config.ts
@@ -32,6 +32,7 @@ export const rootVitestProjects = [
   "test/vitest/vitest.commands-light.config.ts",
   "test/vitest/vitest.commands.config.ts",
   "test/vitest/vitest.auto-reply.config.ts",
+  "test/vitest/vitest.agents-core-isolated.config.ts",
   "test/vitest/vitest.agents-core.config.ts",
   "test/vitest/vitest.agents-embedded-agent.config.ts",
   "test/vitest/vitest.agents-support.config.ts",
diff --git a/test/vitest/vitest.test-shards.mjs b/test/vitest/vitest.test-shards.mjs
index 0cdfc6bb73fd..646e50bea1c2 100644
--- a/test/vitest/vitest.test-shards.mjs
+++ b/test/vitest/vitest.test-shards.mjs
@@ -98,6 +98,7 @@ export const fullSuiteVitestShards = [
       "test/vitest/vitest.cli.config.ts",
       "test/vitest/vitest.commands-light.config.ts",
       "test/vitest/vitest.commands.config.ts",
+      "test/vitest/vitest.agents-core-isolated.config.ts",
       "test/vitest/vitest.agents-core.config.ts",
       "test/vitest/vitest.agents-embedded-agent.config.ts",
       "test/vitest/vitest.agents-support.config.ts",
diff --git a/test/vitest/vitest.tooling-isolated-paths.mjs b/test/vitest/vitest.tooling-isolated-paths.mjs
index 8123f05638e0..366f304d630b 100644
--- a/test/vitest/vitest.tooling-isolated-paths.mjs
+++ b/test/vitest/vitest.tooling-isolated-paths.mjs
@@ -1,6 +1,8 @@
 // Tooling tests that need fresh module or process state instead of the shared serial worker.
 export const toolingIsolatedTestFiles = [
   "test/plugins/bundled-provider-auth-literal-parity.test.ts",
+  "test/scripts/check-extension-package-tsc-boundary.test.ts",
+  "test/scripts/control-ui-i18n.test.ts",
   "test/scripts/openclaw-e2e-instance.test.ts",
 ];