refactor: timeline manager renames (#19007)

* refactor: timeline manager renames

* refactor(web): improve timeline manager naming consistency

- Rename AddContext → GroupInsertionCache for clearer purpose
- Rename TimelineDay → DayGroup for better clarity
- Rename TimelineMonth → MonthGroup for better clarity
- Replace all "bucket" references with "monthGroup" terminology
- Update all component props, method names, and variable references
- Maintain consistent naming patterns across TypeScript and Svelte files

* refactor(web): rename buckets to months in timeline manager

- Rename TimelineManager.buckets property to months
- Update all store.buckets references to store.months
- Use 'month' shorthand for monthGroup arguments (not method names)
- Update component templates and test files for consistency
- Maintain API-related 'bucket' terminology (bucketHeight, getTimeBucket)

* refactor(web): rename assetStore to timelineManager and update types

- Rename assetStore variables to timelineManager in all .svelte files
- Update parameter names in actions.ts and asset-utils.ts functions
- Rename AssetStoreLayoutOptions to TimelineManagerLayoutOptions
- Rename AssetStoreOptions to TimelineManagerOptions
- Move assets-store.spec.ts to timeline-manager.spec.ts

* refactor(web): rename intersectingAssets to viewerAssets and fix property references

- Rename intersectingAssets to viewerAssets in DayGroup and MonthGroup classes
- Update arrow function parameters to use viewerAsset/viewAsset shorthand
- Rename topIntersectingBucket to topIntersectingMonthGroup
- Fix dateGroups references to dayGroups in asset-utils.ts and album page
- Update template loops and variable names in Svelte components

* refactor(web): rename #initializeTimeBuckets to #initializeMonthGroups and bucketDateFormatted to monthGroupTitle

* refactor(web): rename monthGroupHeight to height

* refactor(web): rename bucketCount to assetsCount, bucketsIterator to monthGroupIterator, and related properties

* refactor(web): rename count to assetCount in TimelineManager

* refactor(web): rename LiteBucket to ScrubberMonth and update scrubber variables

- Rename LiteBucket type to ScrubberMonth
- Rename bucketDateFormattted to title in ScrubberMonth type
- Rename bucketPercentY to monthGroupPercentY in scrubber component
- Rename scrubBucket to scrubberMonth and scrubBucketPercent to scrubberMonthPercent

* fix remaining refs to bucket

* reset submodule to correct commit

* reset submodule to correct commit

* refactor(web): extract TimelineManager internals into separate modules

- Move search-related functions to internal/search-support.svelte.ts
- Extract websocket event handling into WebsocketSupport class
- Move utility functions (updateObject, isMismatched) to internal/utils.svelte.ts
- Update imports in tests to use new module structure

* refactor(web): extract intersection logic from TimelineManager

- Create intersection-support.svelte.ts with updateIntersection and calculateIntersecting functions
- Remove private intersection methods from TimelineManager
- Export findMonthGroupForAsset from search-support for reuse
- Update TimelineManager to use the extracted intersection functions

* refactor(web): rename a few methods in intersecting

* refactor(web): rename a few methods in intersecting

* refactor(web): extract layout logic from TimelineManager

- Create layout-support.svelte.ts with updateGeometry and layoutMonthGroup functions
- Remove private layout methods from TimelineManager
- Update TimelineManager to use the extracted layout functions
- Remove unused UpdateGeometryOptions import

* refactor(web): extract asset operations from TimelineManager

- Create operations-support.svelte.ts with addAssetsToMonthGroups and runAssetOperation functions
- Remove private asset operation methods from TimelineManager
- Update TimelineManager to use extracted operation functions with proper AssetOrder handling
- Rename getMonthGroupIndexByAssetId to getMonthGroupByAssetId for consistency
- Move utility functions from utils.svelte.ts to internal/utils.svelte.ts
- Fix method name references in asset-grid.svelte and tests

* refactor(web): extract loading logic from TimelineManager

- Create load-support.svelte.ts with loadFromTimeBuckets function
- Extract time bucket loading, album asset handling, and error logging
- Simplify TimelineManager's loadMonthGroup method to use extracted function

* refresh timeline after archive keyboard shortcut

* remove debugger

* rename

* Review comments - remove shadowed var

* reduce indents - early return

* review comment

* refactor: simplify asset filtering in addAssets method

Replace for loop with filter operation for better readability

* fix: bad merge

* refactor(web): simplify timeline layout algorithm

- Replace rowSpaceRemaining array with direct cumulative width tracking
- Invert logic from tracking remaining space to tracking used space
- Fix spelling: cummulative to cumulative
- Rename lastRowHeight to currentRowHeight for clarity
- Remove confusing lastRow variable and simplify final height calculation
- Add explanatory comments for clarity
- Rename loop variable assetGroup to dayGroup for consistency

* simplify assetsIterator usage

* merge/lint

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

web/src/lib/utils/actions.ts

@@ -1,5 +1,5 @@
 import { notificationController, NotificationType } from '$lib/components/shared-components/notification/notification';
-import { AssetStore } from '$lib/managers/timeline-manager/asset-store.svelte';
+import { TimelineManager } from '$lib/managers/timeline-manager/timeline-manager.svelte';
 import type { TimelineAsset } from '$lib/managers/timeline-manager/types';
 import type { StackResponse } from '$lib/utils/asset-utils';
 import { AssetVisibility, deleteAssets as deleteBulk, restoreAssets } from '@immich/sdk';
@@ -63,12 +63,12 @@ const undoDeleteAssets = async (onUndoDelete: OnUndoDelete, assets: TimelineAsse
  * This function updates the stack information so that the icon is shown for the primary asset
  * and removes any assets from the timeline that are marked for deletion.
  *
- * @param {AssetStore} assetStore - The asset store to update.
+ * @param {TimelineManager} timelineManager - The timeline manager to update.
  * @param {StackResponse} stackResponse - The stack response containing the stack and assets to delete.
  */
-export function updateStackedAssetInTimeline(assetStore: AssetStore, { stack, toDeleteIds }: StackResponse) {
+export function updateStackedAssetInTimeline(timelineManager: TimelineManager, { stack, toDeleteIds }: StackResponse) {
   if (stack != undefined) {
-    assetStore.updateAssetOperation([stack.primaryAssetId], (asset) => {
+    timelineManager.updateAssetOperation([stack.primaryAssetId], (asset) => {
       asset.stack = {
         id: stack.id,
         primaryAssetId: stack.primaryAssetId,
@@ -77,20 +77,20 @@ export function updateStackedAssetInTimeline(assetStore: AssetStore, { stack, to
       return { remove: false };
     });
 
-    assetStore.removeAssets(toDeleteIds);
+    timelineManager.removeAssets(toDeleteIds);
   }
 }
 
 /**
- * Update the asset store to reflect the unstacked state of assets.
+ * Update the timeline manager to reflect the unstacked state of assets.
  * This function updates the stack property of each asset to undefined, effectively unstacking them.
- * It also adds the unstacked assets back to the asset store.
+ * It also adds the unstacked assets back to the timeline manager.
  *
- * @param assetStore - The asset store to update.
- * @param assets - The array of asset response DTOs to update in the asset store.
+ * @param timelineManager - The timeline manager to update.
+ * @param assets - The array of asset response DTOs to update in the timeline manager.
  */
-export function updateUnstackedAssetInTimeline(assetStore: AssetStore, assets: TimelineAsset[]) {
-  assetStore.updateAssetOperation(
+export function updateUnstackedAssetInTimeline(timelineManager: TimelineManager, assets: TimelineAsset[]) {
+  timelineManager.updateAssetOperation(
     assets.map((asset) => asset.id),
     (asset) => {
       asset.stack = null;
@@ -98,5 +98,5 @@ export function updateUnstackedAssetInTimeline(assetStore: AssetStore, assets: T
     },
   );
 
-  assetStore.addAssets(assets);
+  timelineManager.addAssets(assets);
 }