Status: Accepted

Date: 2025-08-20

Authors: Symphony Architecture Team

Summary

We will implement Symphony's triple-mode system (IDE ↔ Maestro Mode ↔ Harmony Board) using the Extension-First Approach, where modes are developed as extensions with full UI capabilities rather than built-in components.

Context

Symphony requires a triple-mode system that allows seamless switching between:

• IDE Mode: Minimal development environment with six core pillars
• Maestro Mode: AI orchestration and workflow automation
• Harmony Board: Visual node-based workflow composition

Key Requirements:

• Consistent UI/UX across all modes
• Alignment with Symphony's "minimal core, maximum extensibility" philosophy
• Support for future mode additions and community innovation
• Technical stack: Rust backend, Tauri + React frontend
• Extension development in Rust

Decision