diff --git a/extensions/active-memory/index.test.ts b/extensions/active-memory/index.test.ts
index af0c86cdbf0..102adaf6089 100644
--- a/extensions/active-memory/index.test.ts
+++ b/extensions/active-memory/index.test.ts
@@ -119,7 +119,7 @@ describe("active-memory plugin", () => {
     runEmbeddedPiAgent.mockResolvedValue({
       payloads: [{ text: "- lemon pepper wings\n- blue cheese" }],
     });
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
   });
 
   afterEach(async () => {
@@ -425,7 +425,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       allowedChatTypes: ["direct", "group"],
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     const result = await hooks.before_prompt_build(
       { prompt: "what wings should we order?", messages: [] },
@@ -513,7 +513,7 @@ describe("active-memory plugin", () => {
         searchMode: "inherit",
       },
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -602,7 +602,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       queryMode: "message",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -630,7 +630,7 @@ describe("active-memory plugin", () => {
       queryMode: "message",
       promptStyle: "preference-only",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -675,7 +675,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       thinking: "medium",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -701,7 +701,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       promptAppend: "Prefer stable long-term preferences over one-off events.",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -730,7 +730,7 @@ describe("active-memory plugin", () => {
       promptOverride: "Custom memory prompt. Return NONE or one user fact.",
       promptAppend: "Extra custom instruction.",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -802,7 +802,7 @@ describe("active-memory plugin", () => {
     api.pluginConfig = {
       agents: ["main"],
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       { prompt: "what wings should i order? temp transcript", messages: [] },
@@ -828,7 +828,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       modelFallbackPolicy: "resolved-only",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     const result = await hooks.before_prompt_build(
       { prompt: "what wings should i order? no fallback", messages: [] },
@@ -851,7 +851,7 @@ describe("active-memory plugin", () => {
       modelFallback: "google/gemini-3-flash",
       modelFallbackPolicy: "default-remote",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       { prompt: "what wings should i order? custom fallback", messages: [] },
@@ -878,7 +878,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       modelFallbackPolicy: "default-remote",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     const result = await hooks.before_prompt_build(
       { prompt: "what wings should i order? built-in fallback", messages: [] },
@@ -1027,7 +1027,7 @@ describe("active-memory plugin", () => {
       timeoutMs: 250,
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
     let lastAbortSignal: AbortSignal | undefined;
     runEmbeddedPiAgent.mockImplementation(async (params: { abortSignal?: AbortSignal }) => {
       lastAbortSignal = params.abortSignal;
@@ -1073,7 +1073,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       { prompt: "what wings should i order? session id cache", messages: [] },
@@ -1107,7 +1107,7 @@ describe("active-memory plugin", () => {
       timeoutMs: 250,
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
     runEmbeddedPiAgent.mockImplementationOnce(async (params: { timeoutMs?: number }) => {
       await new Promise((resolve) => setTimeout(resolve, (params.timeoutMs ?? 0) + 25));
       return {
@@ -1145,7 +1145,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       { prompt: "what wings should i order? log sanitization", messages: [] },
@@ -1179,7 +1179,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
     const hugeSession = `agent:main:${"x".repeat(500)}`;
 
     await hooks.before_prompt_build(
@@ -1423,7 +1423,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       queryMode: "message",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -1451,7 +1451,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       queryMode: "full",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -1482,7 +1482,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       queryMode: "recent",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -1536,7 +1536,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       queryMode: "recent",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -1578,7 +1578,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       queryMode: "recent",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -1611,7 +1611,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       queryMode: "recent",
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       {
@@ -1619,8 +1619,7 @@ describe("active-memory plugin", () => {
         messages: [
           {
             role: "user",
-            content:
-              "Active Memory: I really do want you to remember that I prefer aisle seats.",
+            content: "Active Memory: I really do want you to remember that I prefer aisle seats.",
           },
           {
             role: "user",
@@ -1674,7 +1673,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       maxSummaryChars: 40,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
     runEmbeddedPiAgent.mockResolvedValueOnce({
       payloads: [
         {
@@ -1708,7 +1707,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       maxSummaryChars: 90,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     await hooks.before_prompt_build(
       { prompt: "what wings should i order? prompt-count-check", messages: [] },
@@ -1758,7 +1757,7 @@ describe("active-memory plugin", () => {
       transcriptDir: "active-memory-subagents",
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
     const mkdirSpy = vi.spyOn(fs, "mkdir").mockResolvedValue(undefined);
     const mkdtempSpy = vi.spyOn(fs, "mkdtemp");
     const rmSpy = vi.spyOn(fs, "rm").mockResolvedValue(undefined);
@@ -1802,7 +1801,7 @@ describe("active-memory plugin", () => {
       transcriptDir: "C:/temp/escape",
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
     const mkdirSpy = vi.spyOn(fs, "mkdir").mockResolvedValue(undefined);
 
     await hooks.before_prompt_build(
@@ -1839,7 +1838,7 @@ describe("active-memory plugin", () => {
       transcriptDir: "active-memory-subagents",
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
     const mkdirSpy = vi.spyOn(fs, "mkdir").mockResolvedValue(undefined);
 
     await hooks.before_prompt_build(
@@ -1906,7 +1905,7 @@ describe("active-memory plugin", () => {
       agents: ["main"],
       logging: true,
     };
-    await plugin.register(api as unknown as OpenClawPluginApi);
+    plugin.register(api as unknown as OpenClawPluginApi);
 
     for (let index = 0; index <= 1000; index += 1) {
       await hooks.before_prompt_build(
diff --git a/extensions/comfy/comfy.live.test.ts b/extensions/comfy/comfy.live.test.ts
index 4cd8f1011b7..7d8262d973d 100644
--- a/extensions/comfy/comfy.live.test.ts
+++ b/extensions/comfy/comfy.live.test.ts
@@ -42,7 +42,7 @@ describeLive("comfy live", () => {
   beforeAll(async () => {
     cfg = withPluginsEnabled(loadConfig());
     agentDir = resolveOpenClawAgentDir();
-    await plugin.register(
+    plugin.register(
       createTestPluginApi({
         config: cfg as never,
         registerImageGenerationProvider(provider) {
diff --git a/extensions/device-pair/index.test.ts b/extensions/device-pair/index.test.ts
index f1056c6b1d4..ba80729929a 100644
--- a/extensions/device-pair/index.test.ts
+++ b/extensions/device-pair/index.test.ts
@@ -92,7 +92,7 @@ function registerPairCommand(params?: {
   pluginConfig?: Record<string, unknown>;
 }): OpenClawPluginCommandDefinition {
   let command: OpenClawPluginCommandDefinition | undefined;
-  void registerDevicePair.register(
+  registerDevicePair.register(
     createApi({
       ...params,
       registerCommand: (nextCommand) => {
diff --git a/extensions/memory-wiki/cli-metadata.test.ts b/extensions/memory-wiki/cli-metadata.test.ts
index d9c8d0c6041..73956d62f35 100644
--- a/extensions/memory-wiki/cli-metadata.test.ts
+++ b/extensions/memory-wiki/cli-metadata.test.ts
@@ -51,7 +51,7 @@ describe("memory-wiki cli metadata entry", () => {
     const resolvedConfig = { vaultMode: "bridge", vault: { path: "/vault" } };
     mocks.resolveMemoryWikiConfig.mockReturnValue(resolvedConfig);
 
-    await plugin.register(api);
+    plugin.register(api);
 
     const register = registerCli.mock.calls[0]?.[0];
 
diff --git a/extensions/memory-wiki/index.test.ts b/extensions/memory-wiki/index.test.ts
index af2a43a1994..88f0e860b2c 100644
--- a/extensions/memory-wiki/index.test.ts
+++ b/extensions/memory-wiki/index.test.ts
@@ -15,7 +15,7 @@ describe("memory-wiki plugin", () => {
       registerTool,
     } = createPluginApi();
 
-    await plugin.register(api);
+    plugin.register(api);
 
     expect(registerMemoryCorpusSupplement).toHaveBeenCalledTimes(1);
     expect(registerMemoryPromptSupplement).toHaveBeenCalledTimes(1);
diff --git a/extensions/openai/index.test.ts b/extensions/openai/index.test.ts
index 065ab53dce5..92cf4f44ff9 100644
--- a/extensions/openai/index.test.ts
+++ b/extensions/openai/index.test.ts
@@ -54,7 +54,7 @@ const _registerOpenAIPlugin = async () =>
 async function registerOpenAIPluginWithHook(params?: { pluginConfig?: Record<string, unknown> }) {
   const on = vi.fn();
   const providers: ProviderPlugin[] = [];
-  await plugin.register(
+  plugin.register(
     createTestPluginApi({
       id: "openai",
       name: "OpenAI Provider",
diff --git a/extensions/phone-control/index.test.ts b/extensions/phone-control/index.test.ts
index 2a81ad212f6..99c1000d6fb 100644
--- a/extensions/phone-control/index.test.ts
+++ b/extensions/phone-control/index.test.ts
@@ -80,7 +80,7 @@ async function withRegisteredPhoneControl(
     });
 
     let command: OpenClawPluginCommandDefinition | undefined;
-    void registerPhoneControl.register(
+    registerPhoneControl.register(
       createApi({
         stateDir,
         getConfig: () => config,
diff --git a/extensions/talk-voice/index.test.ts b/extensions/talk-voice/index.test.ts
index 80a3fb7e151..fccea5bac0e 100644
--- a/extensions/talk-voice/index.test.ts
+++ b/extensions/talk-voice/index.test.ts
@@ -20,7 +20,7 @@ function createHarness(config: Record<string, unknown>) {
       command = definition;
     }),
   };
-  void register.register(api as never);
+  register.register(api as never);
   if (!command) {
     throw new Error("talk-voice command not registered");
   }
diff --git a/extensions/thread-ownership/index.test.ts b/extensions/thread-ownership/index.test.ts
index 231db2b5adf..8cb354a96c1 100644
--- a/extensions/thread-ownership/index.test.ts
+++ b/extensions/thread-ownership/index.test.ts
@@ -40,8 +40,8 @@ describe("thread-ownership plugin", () => {
   });
 
   describe("message_sending", () => {
-    beforeEach(async () => {
-      await register.register(api as unknown as OpenClawPluginApi);
+    beforeEach(() => {
+      register.register(api as unknown as OpenClawPluginApi);
     });
 
     async function sendSlackThreadMessage() {
@@ -112,8 +112,8 @@ describe("thread-ownership plugin", () => {
   });
 
   describe("message_received @-mention tracking", () => {
-    beforeEach(async () => {
-      await register.register(api as unknown as OpenClawPluginApi);
+    beforeEach(() => {
+      register.register(api as unknown as OpenClawPluginApi);
     });
 
     it("tracks @-mentions and skips ownership check for mentioned threads", async () => {
diff --git a/src/plugins/bundled-capability-runtime.ts b/src/plugins/bundled-capability-runtime.ts
index a7a14cad715..cf37c425d2c 100644
--- a/src/plugins/bundled-capability-runtime.ts
+++ b/src/plugins/bundled-capability-runtime.ts
@@ -297,7 +297,7 @@ export function loadBundledCapabilityRuntimeRegistry(params: {
 
     try {
       const captured = createCapturedPluginRegistration();
-      void register(captured.api);
+      register(captured.api);
       record.cliBackendIds.push(...captured.cliBackends.map((entry) => entry.id));
       record.providerIds.push(...captured.providers.map((entry) => entry.id));
       record.speechProviderIds.push(...captured.speechProviders.map((entry) => entry.id));