feat(core): add ai workspace all docs switch (#13345)

Close [AI-397](https://linear.app/affine-design/issue/AI-397)

<img width="272" height="186" alt="截屏2025-07-29 11 54 20"
src="https://github.com/user-attachments/assets/e171fb57-66cf-4244-894d-c27b18cbe83a"
/>


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Introduced an AI tools configuration service, allowing users to
customize AI tool usage (e.g., workspace search, reading docs) in chat
and AI features.
* Added a toggle in chat preferences for enabling or disabling
workspace-wide document search.
* AI chat components now respect user-configured tool settings across
chat, retry, and playground scenarios.

* **Improvements**
* Enhanced chat and AI interfaces to propagate and honor user tool
configuration throughout the frontend and backend.
* Made draft and tool configuration services optional and safely handled
their absence in chat components.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/modules/ai-button/index.ts

@@ -1,6 +1,10 @@
 export { AIButtonProvider } from './provider/ai-button';
 export { AIButtonService } from './services/ai-button';
 export { AIDraftService } from './services/ai-draft';
+export {
+  type AIToolsConfig,
+  AIToolsConfigService,
+} from './services/tools-config';
 
 import type { Framework } from '@toeverything/infra';
 
@@ -13,6 +17,7 @@ import { AIDraftService } from './services/ai-draft';
 import { AINetworkSearchService } from './services/network-search';
 import { AIPlaygroundService } from './services/playground';
 import { AIReasoningService } from './services/reasoning';
+import { AIToolsConfigService } from './services/tools-config';
 
 export const configureAIButtonModule = (framework: Framework) => {
   framework.service(AIButtonService, container => {
@@ -40,3 +45,7 @@ export function configureAIDraftModule(framework: Framework) {
     .scope(WorkspaceScope)
     .service(AIDraftService, [GlobalStateService, CacheStorage]);
 }
+
+export function configureAIToolsConfigModule(framework: Framework) {
+  framework.service(AIToolsConfigService, [GlobalStateService]);
+}

packages/frontend/core/src/modules/ai-button/services/tools-config.ts

@@ -0,0 +1,50 @@
+import {
+  createSignalFromObservable,
+  type Signal,
+} from '@blocksuite/affine/shared/utils';
+import { LiveData, Service } from '@toeverything/infra';
+import { map } from 'rxjs';
+
+import type { GlobalStateService } from '../../storage';
+
+const AI_TOOLS_CONFIG_KEY = 'AIToolsConfig';
+
+export interface AIToolsConfig {
+  searchWorkspace?: boolean;
+  readingDocs?: boolean;
+}
+
+export class AIToolsConfigService extends Service {
+  constructor(private readonly globalStateService: GlobalStateService) {
+    super();
+
+    const { signal, cleanup: enabledCleanup } =
+      createSignalFromObservable<AIToolsConfig>(this.config$, {
+        searchWorkspace: true,
+        readingDocs: true,
+      });
+    this.config = signal;
+    this.disposables.push(enabledCleanup);
+  }
+
+  config: Signal<AIToolsConfig>;
+
+  private readonly config$ = LiveData.from(
+    this.globalStateService.globalState.watch<AIToolsConfig>(
+      AI_TOOLS_CONFIG_KEY
+    ),
+    undefined
+  ).pipe(
+    map(config => ({
+      searchWorkspace: config?.searchWorkspace ?? true,
+      readingDocs: config?.readingDocs ?? true,
+    }))
+  );
+
+  setConfig = (data: Partial<AIToolsConfig>) => {
+    this.globalStateService.globalState.set(AI_TOOLS_CONFIG_KEY, {
+      ...this.config.value,
+      ...data,
+    });
+  };
+}