Show HN: Codex Sidecar – A Local macOS Companion for Codex Desktop

- Codex Desktop is a desktop application that provides a local interface for running AI language models (like LLMs) on your own computer, rather than relying on cloud services. - Codex Sidecar is a new macOS companion app that runs alongside Codex Desktop, offering additional integration features such as system-wide shortcuts or enhanced workflows. - The project appears on Hacker News ("Show HN"), indicating it's a maker sharing a personal project with the tech community. - This matters because it reflects the growing trend of running AI locally for privacy, offline use, and avoiding subscription fees — tools like Ollama and LM Studio are similar. Sidecar adds macOS-specific polish to that ecosystem.