Fixed first-run setup so the companion installation page opens automatically when the native bridge is missing or disconnects before startup. Added regression coverage and refreshed the versioned Windows, macOS, npm, and source artifacts.

Version 1.4.0 adds a portable cross-platform companion for Firefox and Zen Browser, including a per-user Windows installer and a universal macOS package. It also adds a terminal-friendly npm installation option, automatic discovery of the official local OpenAI host, companion diagnostics, and a clearer one-time setup screen explaining why the bridge is currently required. Release artifacts are version-matched and published with SHA-256 checksums.

Fixes dropdowns and settings menus closing immediately while the composer text box is active in Firefox and Zen. Adds refreshed Firefox/Zen-focused branding and a new original extension icon.