Show HN: Yet another minimal and lightweight terminal multiplexer written in Go.

hrdx is a lightweight terminal multiplexer written in Go designed for AI agent workflows, featuring a sidebar for project organization, real PTY sessions for each pane, and support for running multiple AI agents (Claude Code, Codex CLI, etc.) simultaneously. It preserves sessions between restarts, allows drag-to-resize splits, includes customizable themes and notifications, and provides environment detection (HRDX=1) so tools can optimize their behavior within the multiplexer. The tool is positioned as minimal and experimental, offering genuine terminal emulation rather than wrappers with full support for streaming output, slash commands, and mouse interactions.