Megastructure Arc · August 6, 2026
Arc 1.8.6
Arc 1.8.6 refreshes the desktop with the same cool blue and warm gold visual language as the Megastructure website. Dark and light themes now share clearer hierarchy, calmer surfaces, and more consistent controls. The Composer also grows with a multi-line draft, then caps at a practical reading height so longer prompts stay visible without taking over the room.
Current release
A calmer Arc, a roomier Composer
Windows 10/11 (64-bit), or macOS 11+ on Apple Silicon.
Highlights
- The main control room, room view, settings, cards, rails, states, and forms now use a coordinated cool-blue foundation with warm-gold action accents. Both themes preserve readable contrast and a consistent product identity.
- The Composer expands as Shift+Enter adds lines, measures from its natural content height, and stops at a 240-pixel edit area with internal scrolling. Clearing the draft returns it to its compact size.
Fixes and refinements
- Long multi-line drafts no longer remain trapped in a fixed-height input, making prompts easier to review before sending.
- Light-theme surfaces, dark-theme depth, warning states, and primary actions now derive from one checked palette instead of drifting component by component.
System requirements
Windows 10/11 (64-bit), or macOS 11+ on Apple Silicon.