refactor(editor): add cache extension for link preview service (#12196)

Closes: [BS-2578](https://linear.app/affine-design/issue/BS-2578/优化-footnote-预览的逻辑：支持缓存结果，避免重复-loading)

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

- **New Features**
  - Introduced a link preview caching mechanism, enabling faster and more efficient reuse of link preview data across the app.
  - Added a feature flag for enabling or disabling link preview cache, configurable through workspace experimental settings.
  - Enhanced localization with new entries describing the link preview cache feature.

- **Improvements**
  - Updated link preview service architecture for better extensibility and maintainability.
  - Improved integration of feature flags throughout chat and rendering components.

- **Bug Fixes**
  - Fixed tooltip formatting for footnote URLs.

- **Chores**
  - Updated dependencies and localization completeness tracking.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/modules/feature-flag/constant.ts

@@ -106,6 +106,16 @@ export const AFFINE_FLAGS = {
     configurable: isCanaryBuild,
     defaultState: isCanaryBuild,
   },
+  enable_link_preview_cache: {
+    category: 'blocksuite',
+    bsFlag: 'enable_link_preview_cache',
+    displayName:
+      'com.affine.settings.workspace.experimental-features.enable-link-preview-cache.name',
+    description:
+      'com.affine.settings.workspace.experimental-features.enable-link-preview-cache.description',
+    configurable: isCanaryBuild,
+    defaultState: isCanaryBuild,
+  },
 
   enable_emoji_folder_icon: {
     category: 'affine',

packages/frontend/core/src/modules/peek-view/view/ai-chat-block-peek-view/index.tsx

@@ -2,7 +2,9 @@ import { toReactNode } from '@affine/component';
 import { AIChatBlockPeekViewTemplate } from '@affine/core/blocksuite/ai';
 import type { AIChatBlockModel } from '@affine/core/blocksuite/ai/blocks/ai-chat-block/model/ai-chat-model';
 import { useAIChatConfig } from '@affine/core/components/hooks/affine/use-ai-chat-config';
+import { FeatureFlagService } from '@affine/core/modules/feature-flag';
 import type { EditorHost } from '@blocksuite/affine/std';
+import { useFramework } from '@toeverything/infra';
 import { useMemo } from 'react';
 
 export type AIChatBlockPeekViewProps = {
@@ -21,6 +23,9 @@ export const AIChatBlockPeekView = ({
     reasoningConfig,
   } = useAIChatConfig();
 
+  const framework = useFramework();
+  const affineFeatureFlagService = framework.get(FeatureFlagService);
+
   return useMemo(() => {
     const template = AIChatBlockPeekViewTemplate(
       model,
@@ -28,7 +33,8 @@ export const AIChatBlockPeekView = ({
       docDisplayConfig,
       searchMenuConfig,
       networkSearchConfig,
-      reasoningConfig
+      reasoningConfig,
+      affineFeatureFlagService
     );
     return toReactNode(template);
   }, [
@@ -38,5 +44,6 @@ export const AIChatBlockPeekView = ({
     searchMenuConfig,
     networkSearchConfig,
     reasoningConfig,
+    affineFeatureFlagService,
   ]);
 };