diff --git a/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.test.ts b/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.test.ts
index 20c95240e..5f878d364 100644
--- a/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.test.ts
+++ b/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.test.ts
@@ -2,7 +2,7 @@ import type { Tool } from '@xsai/shared-chat'
 
 import { useLlmToolsStore } from '@proj-airi/stage-ui/stores/llm-tools'
 import { createPinia, setActivePinia } from 'pinia'
-import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 
 const invokeMocks = vi.hoisted(() => ({
   invokePluginTool: vi.fn(async (payload: unknown) => payload),
@@ -39,6 +39,11 @@ describe('useTamagotchiPluginToolsStore', async () => {
     invokeMocks.invokePluginTool.mockClear()
   })
 
+  afterEach(() => {
+    vi.useRealTimers()
+    vi.restoreAllMocks()
+  })
+
   /**
    * @example
    * await store.refresh()
@@ -81,4 +86,54 @@ describe('useTamagotchiPluginToolsStore', async () => {
 
     expect(llmToolsStore.toolsByProvider['plugin-tools']).toBeUndefined()
   })
+
+  /**
+   * @example
+   * await store.refresh()
+   * await vi.advanceTimersByTimeAsync(5_000)
+   * await llmToolsStore.awaitPendingRegistrations()
+   */
+  it('falls back to empty plugin tools when listing xsai tools never resolves during cold start', async () => {
+    vi.useFakeTimers()
+    vi.spyOn(console, 'warn').mockImplementation(() => {})
+    invokeMocks.listPluginXsaiTools.mockImplementationOnce((_req?: undefined, options?: { signal?: AbortSignal }) => new Promise((_, reject) => {
+      options?.signal?.addEventListener('abort', () => {
+        reject(options.signal?.reason)
+      }, { once: true })
+    }))
+
+    const llmToolsStore = useLlmToolsStore()
+    const store = useTamagotchiPluginToolsStore()
+    const onSettled = vi.fn()
+
+    // ROOT CAUSE:
+    //
+    // If the renderer asks the main process for plugin xsai tools before the
+    // Eventa handler is ready, the invoke promise can remain pending forever.
+    // The shared LLM store then waits in awaitPendingRegistrations() before
+    // building chat tools, so no model HTTP request is sent and chat sync
+    // eventually times out.
+    //
+    // Before the fix, this wait never settled.
+    //
+    // We fixed this by letting optional plugin tool listing time out and
+    // complete registration with an empty tool list.
+    store.refresh()
+    const pendingRegistrations = llmToolsStore.awaitPendingRegistrations().then(() => {
+      onSettled()
+    })
+
+    await Promise.resolve()
+
+    expect(onSettled).not.toHaveBeenCalled()
+
+    await vi.advanceTimersByTimeAsync(5_000)
+    await pendingRegistrations
+
+    expect(onSettled).toHaveBeenCalledTimes(1)
+    expect(llmToolsStore.toolsByProvider['plugin-tools']).toEqual([])
+    expect(console.warn).toHaveBeenCalledWith(
+      expect.stringContaining('[plugin-tools] Failed to list plugin xsai tools'),
+    )
+  })
 })
diff --git a/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.ts b/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.ts
index 38930eabd..85ed41e1d 100644
--- a/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.ts
+++ b/apps/stage-tamagotchi/src/renderer/stores/plugin-tools.ts
@@ -1,3 +1,4 @@
+import { errorMessageFrom } from '@moeru/std'
 import { useElectronEventaInvoke } from '@proj-airi/electron-vueuse'
 import { useLlmToolsStore } from '@proj-airi/stage-ui/stores/llm-tools'
 import { rawTool } from '@xsai/tool'
@@ -23,20 +24,34 @@ export const useTamagotchiPluginToolsStore = defineStore('tamagotchi-plugin-tool
   const invokePluginTool = useElectronEventaInvoke(electronPluginInvokeTool)
 
   async function refresh() {
-    return llmToolsStore.registerTools('plugin-tools', listPluginXsaiToolDefinitions().then(definitions =>
-      definitions.map(definition =>
-        rawTool({
-          name: definition.name,
-          description: definition.description,
-          parameters: definition.parameters,
-          execute: async input => invokePluginTool({
-            ownerPluginId: definition.ownerPluginId,
-            name: definition.name,
-            input,
-          }),
-        }),
-      ),
-    ))
+    const abortController = new AbortController()
+    const timeout = setTimeout(() => abortController.abort(new Error(`Timed out after ${5_000}ms`)), 5_000)
+
+    return llmToolsStore.registerTools(
+      'plugin-tools',
+      listPluginXsaiToolDefinitions(undefined, { signal: abortController.signal })
+        .catch((error) => {
+          console.warn(`[plugin-tools] Failed to list plugin xsai tools: ${errorMessageFrom(error) ?? 'Unknown error'}`)
+          return []
+        })
+        .finally(() => {
+          clearTimeout(timeout)
+        })
+        .then(definitions =>
+          definitions.map(definition =>
+            rawTool({
+              name: definition.name,
+              description: definition.description,
+              parameters: definition.parameters,
+              execute: async input => invokePluginTool({
+                ownerPluginId: definition.ownerPluginId,
+                name: definition.name,
+                input,
+              }),
+            }),
+          ),
+        ),
+    )
   }
 
   function dispose() {