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/tauri-app/scripts/dev-prep.js

@@ -0,0 +1,46 @@
+#!/usr/bin/env node
+
+const fs = require("fs")
+const path = require("path")
+const { execSync } = require("child_process")
+
+const root = path.resolve(__dirname, "..")
+const workspaceRoot = path.resolve(root, "..", "..")
+const uiRoot = path.resolve(root, "..", "ui")
+const uiDist = path.resolve(uiRoot, "src", "renderer", "dist")
+const uiLoadingDest = path.resolve(root, "src-tauri", "resources", "ui-loading")
+
+function ensureUiBuild() {
+  const loadingHtml = path.join(uiDist, "loading.html")
+  if (fs.existsSync(loadingHtml)) {
+    return
+  }
+
+  console.log("[dev-prep] UI loader build missing; running workspace build…")
+  execSync("npm --workspace @codenomad/ui run build", {
+    cwd: workspaceRoot,
+    stdio: "inherit",
+  })
+
+  if (!fs.existsSync(loadingHtml)) {
+    throw new Error("[dev-prep] failed to produce loading.html after UI build")
+  }
+}
+
+function copyUiLoadingAssets() {
+  const loadingSource = path.join(uiDist, "loading.html")
+  const assetsSource = path.join(uiDist, "assets")
+
+  fs.rmSync(uiLoadingDest, { recursive: true, force: true })
+  fs.mkdirSync(uiLoadingDest, { recursive: true })
+
+  fs.copyFileSync(loadingSource, path.join(uiLoadingDest, "loading.html"))
+  if (fs.existsSync(assetsSource)) {
+    fs.cpSync(assetsSource, path.join(uiLoadingDest, "assets"), { recursive: true })
+  }
+
+  console.log(`[dev-prep] copied loader bundle from ${uiDist}`)
+}
+
+ensureUiBuild()
+copyUiLoadingAssets()