fix(core): artifact rendering issue in standalone ai chat panel (#13166)

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

* **New Features**
* Improved chat component to support document link navigation directly
from chat messages, allowing users to open documents in the workbench
when links are clicked.

* **Refactor**
* Streamlined notification handling and property access in document
composition tools for a cleaner user experience.
* Updated import statements for improved code clarity and
maintainability.
  * Enhanced code artifact tool rendering to ensure consistent theming.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/blocksuite/ai/components/ai-chat-content/ai-chat-content.ts

@@ -6,11 +6,7 @@ import type {
   CopilotChatHistoryFragment,
 } from '@affine/graphql';
 import { SignalWatcher, WithDisposable } from '@blocksuite/affine/global/lit';
-import {
-  type BlockStdScope,
-  type EditorHost,
-  ShadowlessElement,
-} from '@blocksuite/affine/std';
+import { type EditorHost, ShadowlessElement } from '@blocksuite/affine/std';
 import type { ExtensionType } from '@blocksuite/affine/store';
 import type { NotificationService } from '@blocksuite/affine-shared/services';
 import { type Signal } from '@preact/signals-core';
@@ -138,9 +134,6 @@ export class AIChatContent extends SignalWatcher(
   @property({ attribute: false })
   accessor host: EditorHost | null | undefined;
 
-  @property({ attribute: false })
-  accessor std: BlockStdScope | null | undefined;
-
   @property({ attribute: false })
   accessor session!: CopilotChatHistoryFragment | null | undefined;
 
@@ -414,7 +407,6 @@ export class AIChatContent extends SignalWatcher(
         })}
         ${ref(this.chatMessagesRef)}
         .host=${this.host}
-        .std=${this.std}
         .workspaceId=${this.workspaceId}
         .docId=${this.docId}
         .session=${this.session}

packages/frontend/core/src/blocksuite/ai/components/ai-chat-messages/ai-chat-messages.ts

@@ -6,11 +6,7 @@ import {
   type FeatureFlagService,
   type NotificationService,
 } from '@blocksuite/affine/shared/services';
-import {
-  type BlockStdScope,
-  type EditorHost,
-  ShadowlessElement,
-} from '@blocksuite/affine/std';
+import { type EditorHost, ShadowlessElement } from '@blocksuite/affine/std';
 import type { BaseSelection, ExtensionType } from '@blocksuite/affine/store';
 import { ArrowDownBigIcon as ArrowDownIcon } from '@blocksuite/icons/lit';
 import type { Signal } from '@preact/signals-core';
@@ -162,9 +158,6 @@ export class AIChatMessages extends WithDisposable(ShadowlessElement) {
   @property({ attribute: false })
   accessor host: EditorHost | null | undefined;
 
-  @property({ attribute: false })
-  accessor std: BlockStdScope | null | undefined;
-
   @property({ attribute: false })
   accessor workspaceId!: string;
 
@@ -323,7 +316,6 @@ export class AIChatMessages extends WithDisposable(ShadowlessElement) {
                 } else if (isChatMessage(item) && item.role === 'assistant') {
                   return html`<chat-message-assistant
                     .host=${this.host}
-                    .std=${this.std}
                     .session=${this.session}
                     .item=${item}
                     .isLast=${isLast}

packages/frontend/core/src/blocksuite/ai/components/ai-message-content/stream-objects.ts

@@ -90,6 +90,7 @@ export class ChatContentStreamObjects extends WithDisposable(
             .std=${this.std || this.host?.std}
             .data=${streamObject}
             .width=${this.width}
+            .theme=${this.theme}
           ></code-artifact-tool>
         `;
       case 'doc_edit':

packages/frontend/core/src/blocksuite/ai/components/ai-tools/doc-compose.ts

@@ -109,6 +109,7 @@ export class DocComposeTool extends ArtifactTool<
   }
 
   protected override getPreviewContent() {
+    if (!this.std) return html``;
     const resultData = this.data;
     const title = this.data.args.title;
     const result = resultData.type === 'tool-result' ? resultData.result : null;

packages/frontend/core/src/desktop/pages/workspace/chat/index.tsx

@@ -58,7 +58,9 @@ function useCopilotClient() {
 
 function createMockStd(workspace: Workspace) {
   workspace.meta.initialize();
-  const store = workspace.createDoc().getStore();
+  // just pick a random doc for now
+  const store = workspace.docs.values().next().value?.getStore();
+  if (!store) return null;
   const std = new BlockStdScope({
     store,
     extensions: [...getViewManager().config.init().value.get('page')],
@@ -187,7 +189,7 @@ export const Component = () => {
     content.session = currentSession;
     content.workspaceId = workspaceId;
     content.extensions = specs;
-    content.std = mockStd;
+    content.host = mockStd?.host;
     content.docDisplayConfig = docDisplayConfig;
     content.searchMenuConfig = searchMenuConfig;
     content.networkSearchConfig = networkSearchConfig;