CS Demo Manager is a mature Electron + React desktop application for managing Counter-Strike 2 and CS:GO demo files. It provides a complete pipeline: downloading demos from Valve, Faceit, 5EPlay, and Renown; parsing them to extract all game events (kills, rounds, economy, grenades, positions, etc.) into a PostgreSQL database; viewing 2D match replays with heatmaps and timeline; generating highlight videos via HLAE/FFmpeg; and exporting statistics to XLSX/JSON. The architecture consists of three processes: an Electron main process for window lifecycle, a React renderer for the UI, and a background Node.js server daemon for demo analysis, video encoding, and scheduled tasks. The codebase is well-structured with strong separation of concerns, extensive type usage, custom error hierarchies, and a comprehensive test suite for core logic. It demonstrates high craftsmanship in generic UI components (virtualized table, heatmap, dialogs) and IPC patterns (typed WebSocket client with reply queue).