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)

Launch-Windows-Prod.bat

@@ -0,0 +1,57 @@
+@echo off
+setlocal enabledelayedexpansion
+
+title NomadArch Launcher (Production Mode)
+color 0A
+
+echo.
+echo NomadArch Launcher (Windows, Production Mode)
+echo Version: 0.4.0
+echo Features: SMART FIX / APEX / SHIELD / MULTIX MODE
+echo.
+
+set SCRIPT_DIR=%~dp0
+set SCRIPT_DIR=%SCRIPT_DIR:~0,-1%
+cd /d "%SCRIPT_DIR%"
+
+echo [STEP 1/3] Checking Dependencies...
+
+where node >nul 2>&1
+if %ERRORLEVEL% neq 0 (
+    echo [WARN] Node.js not found. Running installer...
+    call "%SCRIPT_DIR%\Install-Windows.bat"
+    echo [INFO] If Node.js was installed, open a new terminal and run Launch-Windows-Prod.bat again.
+    pause
+    exit /b 1
+)
+
+for /f "tokens=*" %%i in ('node --version') do set NODE_VERSION=%%i
+echo [OK] Node.js: %NODE_VERSION%
+
+echo.
+echo [STEP 2/3] Checking Pre-Built UI...
+
+if exist "packages\electron-app\dist\renderer\assets" (
+    echo [OK] Pre-built UI assets found
+) else (
+    echo [ERROR] Pre-built UI assets not found.
+    echo Run: npm run build
+    pause
+    exit /b 1
+)
+
+echo.
+echo [STEP 3/3] Starting NomadArch (Production Mode)...
+
+pushd packages\electron-app
+npx electron .
+popd
+
+if %ERRORLEVEL% neq 0 (
+    echo.
+    echo [ERROR] NomadArch exited with an error!
+    echo.
+)
+
+pause
+exit /b %ERRORLEVEL%