feat(core): support better battery save mode (#13383)

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

* **New Features**
* Introduced a Document Summary module, enabling live and cached
document summaries with cloud revalidation.
  * Added a feature flag for enabling battery save mode.
* Added explicit pause and resume controls for sync operations,
accessible via UI events and programmatically.

* **Improvements**
* Enhanced sync and indexing logic to support pausing, resuming, and
battery save mode, with improved job prioritization.
* Updated navigation and preview components to use the new document
summary service and improved priority handling.
* Improved logging and state reporting for sync and indexing processes.
* Refined backlink handling with reactive loading states and cloud
revalidation.
* Replaced backlink and link management to use a new dedicated document
links service.
* Enhanced workspace engine to conditionally enable battery save mode
based on feature flags and workspace flavor.

* **Bug Fixes**
* Removed unnecessary debug console logs from various components for
cleaner output.

* **Refactor**
* Replaced battery save mode methods with explicit pause/resume methods
throughout the app and services.
* Modularized and streamlined document summary and sync-related code for
better maintainability.
* Restructured backlink components to improve visibility handling and
data fetching.
* Simplified and improved document backlink data fetching with retry and
loading state management.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/mobile/components/doc-info/doc-info.tsx

@@ -16,12 +16,12 @@ import { LinksRow } from '@affine/core/desktop/dialogs/doc-info/links-row';
 import { TimeRow } from '@affine/core/desktop/dialogs/doc-info/time-row';
 import type { DocCustomPropertyInfo } from '@affine/core/modules/db';
 import { DocDatabaseBacklinkInfo } from '@affine/core/modules/doc-info';
-import { DocsSearchService } from '@affine/core/modules/docs-search';
+import { DocLinksService } from '@affine/core/modules/doc-link';
 import { WorkspacePropertyService } from '@affine/core/modules/workspace-property';
 import { useI18n } from '@affine/i18n';
 import { PlusIcon } from '@blocksuite/icons/rc';
-import { LiveData, useLiveData, useServices } from '@toeverything/infra';
-import { Suspense, useCallback, useMemo, useState } from 'react';
+import { useLiveData, useServices } from '@toeverything/infra';
+import { Suspense, useCallback, useEffect, useState } from 'react';
 
 import * as styles from './doc-info.css';
 
@@ -31,37 +31,16 @@ export const DocInfoSheet = ({
   docId: string;
   defaultOpenProperty?: DefaultOpenProperty;
 }) => {
-  const { docsSearchService, workspacePropertyService } = useServices({
-    DocsSearchService,
+  const { workspacePropertyService, docLinksService } = useServices({
     WorkspacePropertyService,
+    DocLinksService,
   });
   const t = useI18n();
 
   const canEditPropertyInfo = useGuard('Workspace_Properties_Update');
   const canEditProperty = useGuard('Doc_Update', docId);
-  const links = useLiveData(
-    useMemo(
-      () => LiveData.from(docsSearchService.watchRefsFrom(docId), null),
-      [docId, docsSearchService]
-    )
-  );
-  const backlinks = useLiveData(
-    useMemo(() => {
-      return LiveData.from(docsSearchService.watchRefsTo(docId), []).map(
-        links => {
-          const visitedDoc = new Set<string>();
-          // for each doc, we only show the first block
-          return links.filter(link => {
-            if (visitedDoc.has(link.docId)) {
-              return false;
-            }
-            visitedDoc.add(link.docId);
-            return true;
-          });
-        }
-      );
-    }, [docId, docsSearchService])
-  );
+  const links = useLiveData(docLinksService.links.links$);
+  const backlinks = useLiveData(docLinksService.backlinks.backlinks$);
 
   const [newPropertyId, setNewPropertyId] = useState<string | null>(null);
 
@@ -69,6 +48,10 @@ export const DocInfoSheet = ({
     setNewPropertyId(property.id);
   }, []);
 
+  useEffect(() => {
+    docLinksService.backlinks.revalidateFromCloud();
+  }, [docLinksService.backlinks]);
+
   const properties = useLiveData(workspacePropertyService.sortedProperties$);
 
   return (

packages/frontend/core/src/mobile/components/navigation/nodes/doc/index.tsx

@@ -8,6 +8,7 @@ import { DocsSearchService } from '@affine/core/modules/docs-search';
 import { FeatureFlagService } from '@affine/core/modules/feature-flag';
 import { GlobalContextService } from '@affine/core/modules/global-context';
 import { NavigationPanelService } from '@affine/core/modules/navigation-panel';
+import { WorkspaceService } from '@affine/core/modules/workspace';
 import { useI18n } from '@affine/i18n';
 import {
   LiveData,
@@ -44,8 +45,10 @@ export const NavigationPanelDocNode = ({
     globalContextService,
     docDisplayMetaService,
     featureFlagService,
+    workspaceService,
   } = useServices({
     DocsSearchService,
+    WorkspaceService,
     DocsService,
     GlobalContextService,
     DocDisplayMetaService,
@@ -95,9 +98,17 @@ export const NavigationPanelDocNode = ({
 
   const [referencesLoading, setReferencesLoading] = useState(true);
   useLayoutEffect(() => {
+    if (collapsed) {
+      return;
+    }
     const abortController = new AbortController();
+    const undoSync = workspaceService.workspace.engine.doc.addPriority(
+      docId,
+      10
+    );
+    const undoIndexer = docsSearchService.indexer.addPriority(docId, 10);
     docsSearchService.indexer
-      .waitForDocCompletedWithPriority(docId, 100, abortController.signal)
+      .waitForDocCompleted(docId, abortController.signal)
       .then(() => {
         setReferencesLoading(false);
       })
@@ -107,9 +118,11 @@ export const NavigationPanelDocNode = ({
         }
       });
     return () => {
+      undoSync();
+      undoIndexer();
       abortController.abort(MANUALLY_STOP);
     };
-  }, [docId, docsSearchService]);
+  }, [docId, docsSearchService, workspaceService, collapsed]);
 
   const workspaceDialogService = useService(WorkspaceDialogService);
   const option = useMemo(