TaskNotes is a mature Obsidian plugin that transforms task management into a note-based system. Each task is a separate Markdown file with YAML frontmatter, providing full portability and no proprietary database. The plugin offers a comprehensive set of features: task lists, Kanban boards, calendar views (via FullCalendar), agenda view, mini calendar, Pomodoro timer, time tracking, recurring tasks (RRULE with per-instance completion), dependencies (F2F), custom statuses/priorities, user-defined fields, natural language input for task creation, and external calendar sync (Google Calendar, Microsoft, ICS/CalDAV). It also includes an HTTP API, CLI commands, webhooks, and MCP (Model Context Protocol) integration for AI agents. The architecture is event-driven, with a central plugin class that coordinates services, modals, editors, and views. Views are built on Obsidian's Bases system, allowing declarative configuration via .base files. The codebase is heavily tested with over 200 unit tests, many targeting specific GitHub issues, and a suite of Playwright e2e tests running against a real Obsidian vault. The project demonstrates strong engineering practices with modular design, reusable components (EventEmitter, VirtualScroller, DOMReconciler, RequestDeduplicator), and comprehensive i18n support (9 UI languages).