v0.5.0: NomadArch - Binary-Free Mode Release

Features:
- Binary-Free Mode: No OpenCode binary required
- NomadArch Native mode with free Zen models
- Native session management
- Provider routing (Zen, Qwen, Z.AI)
- Fixed MCP connection with explicit connectAll()
- Updated installers and launchers for all platforms
- UI binary selector with Native option

Free Models Available:
- GPT-5 Nano (400K context)
- Grok Code Fast 1 (256K context)
- GLM-4.7 (205K context)
- Doubao Seed Code (256K context)
- Big Pickle (200K context)

packages/electron-app/README.md

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+# CodeNomad App
+
+This package contains the native desktop application shell for CodeNomad, built with [Electron](https://www.electronjs.org/).
+
+## Overview
+
+The Electron app wraps the CodeNomad UI and Server into a standalone executable. It provides deeper system integration, such as:
+- Native window management
+- Global keyboard shortcuts
+- Application menu integration
+
+## Development
+
+To run the Electron app in development mode:
+
+```bash
+npm run dev
+```
+
+This will start the renderer (UI) and the main process with hot reloading.
+
+## Building
+
+To build the application for your current platform:
+
+```bash
+npm run build
+```
+
+To build for specific platforms (requires appropriate build tools):
+
+- **macOS**: `npm run build:mac`
+- **Windows**: `npm run build:win`
+- **Linux**: `npm run build:linux`
+
+## Structure
+
+- `electron/main`: Main process code (window creation, IPC).
+- `electron/preload`: Preload scripts for secure bridge between main and renderer.
+- `electron/resources`: Static assets like icons.