feat: add dashboard and commands

src/dashboard/filterTasks.ts

@@ -0,0 +1,38 @@
+import { Task, TaskPriority, TaskStatus } from "@/model/task";
+
+export type TaskFilter = {
+	statuses?: TaskStatus[];
+	priorities?: TaskPriority[];
+	query?: string;
+	tags?: string[];
+};
+
+export function filterTasks(tasks: Task[], filter: TaskFilter): Task[] {
+	const statuses = filter.statuses;
+	const priorities = filter.priorities;
+	const tags = filter.tags;
+	const query = filter.query?.trim().toLowerCase() ?? "";
+
+	return tasks.filter((task) => {
+		if (statuses && statuses.length > 0 && !statuses.includes(task.status)) {
+			return false;
+		}
+		if (
+			priorities &&
+			priorities.length > 0 &&
+			!priorities.includes(task.priority)
+		) {
+			return false;
+		}
+		if (tags && tags.length > 0) {
+			const hasAll = tags.every((tag) => task.tags.includes(tag));
+			if (!hasAll) return false;
+		}
+		if (query) {
+			const inTitle = task.title.toLowerCase().includes(query);
+			const inDescription = task.description.toLowerCase().includes(query);
+			if (!inTitle && !inDescription) return false;
+		}
+		return true;
+	});
+}