feat(timer): add timer statistics panel and Working On view

- Add TimerStatisticsPanel component for displaying active and completed timers
- Implement completed timer history with configurable max records
- Add timer controls (start/pause/resume/stop) to task list and tree views
- Integrate timer auto-start option in quick capture settings
- Add Working On navigation item for viewing active timers
- Refactor timer manager with unified storage abstraction
- Add i18n translations for timer features (en/zh-cn)
- Add timer statistics CSS styles

Author: Quorafind

packages/calendar

@@ -428,6 +428,8 @@ export interface QuickCaptureSettings {
 		templateFile: string; // Template file path
 		writeContentTagsToFrontmatter?: boolean; // When true, write #tags from content into frontmatter.tags (merged, deduped)
 	};
+	// Timer integration settings
+	autoStartTimer?: boolean; // Whether to auto-start timer when creating task (default false)
 }
 
 /** Define the structure for task gutter settings */
@@ -1192,6 +1194,8 @@ export const DEFAULT_SETTINGS: TaskProgressBarSettings = {
 			templateFile: "",
 			writeContentTagsToFrontmatter: false,
 		},
+		// Timer integration
+		autoStartTimer: false,
 	},
 
 	// Workflow Defaults
@@ -1370,6 +1374,16 @@ export const DEFAULT_SETTINGS: TaskProgressBarSettings = {
 			filterRules: {},
 			filterBlanks: false,
 		},
+		{
+			id: "working-on",
+			name: t("Working On"),
+			icon: "timer",
+			type: "default",
+			visible: true,
+			hideCompletedAndAbandonedTasks: true,
+			filterRules: {},
+			filterBlanks: false,
+		},
 		{
 			id: "forecast",
 			name: t("Forecast"),