Understand Anything is a developer tool that analyzes codebases to create interactive knowledge graphs for code comprehension and onboarding. It combines deterministic static analysis (using tree-sitter) with LLM-powered semantic understanding to build explorable graphs of files, functions, classes, dependencies, and business domains. The system features a multi-agent pipeline for analysis, incremental updates via fingerprinting, and a React/Vite dashboard for visualization with guided tours, semantic search, and diff impact analysis. The architecture follows a monorepo structure with pnpm workspaces separating core analysis engine, dashboard UI, and plugin interface. Key capabilities include language-agnostic structural analysis across 30+ programming languages, business domain extraction, knowledge base analysis (Obsidian/Logseq-style wikis), and multi-platform support for AI coding assistants (Claude Code, Codex, Cursor, Copilot). The system operates offline for structural analysis while optionally leveraging LLMs for enrichment, with persistence to a .ua/ directory for team collaboration via version control.
PiDeck is an open-source Electron desktop application that serves as a comprehensive workbench for AI coding agents, primarily wrapping the `pi` coding agent and the DeepSeek Harness (DSH) backend. It provides a rich session-centric chat workspace with features including multi-project management, Git integration, a built-in terminal, voice transcription, image generation, scheduled automation tasks, a desktop pet companion, and extensive configuration options. The application supports importing sessions from other tools like Claude, Codex, Cursor, and OpenCode, and offers a web service variant for remote access. Architecturally, PiDeck follows the standard Electron pattern with a main process (Node.js services, IPC handlers, filesystem operations), a preload script for secure IPC bridging, and a renderer process built with React 19, TypeScript, Jotai for state management, and Tailwind CSS v4 with shadcn/ui-style components. The codebase is organized into `src/main/` for backend services, `src/renderer/` for the UI, and `src/shared/` for cross-process types and utilities. Key entry points include the main process index, renderer bootstrap, and numerous IPC modules that validate inputs and delegate to domain services. Data flows center on session files stored in JSONL format (for pi) or compressed JSONL (for DSH), with model catalogs, usage statistics, and configuration persisted in user data directories. The application manages multiple backends through a unified session catalog, with runtime state synchronized via IPC events and Jotai atoms. External dependencies include the pi-coding-agent CLI, DSH runtime packages, node-pty for terminal emulation, whisper.cpp for local speech-to-text, and electron-updater for cross-platform updates. The codebase demonstrates strong engineering practices with extensive unit tests (node:test), Playwright E2E tests, pure-function modules extracted for testability, and consistent IPC boundary validation patterns.