Move server runtime dependencies to dependencies section

- Move cors, express, ws from devDependencies to dependencies
- These are required at runtime for server mode to work
- Fixes 'cors cannot be found' error when running as npm package

Author: kylecarbs

package.json

@@ -52,11 +52,13 @@
     "ai-tokenizer": "^1.0.3",
     "chalk": "^5.6.2",
     "cmdk": "^1.0.0",
+    "cors": "^2.8.5",
     "crc-32": "^1.2.2",
     "diff": "^8.0.2",
     "disposablestack": "^1.1.7",
     "electron-updater": "^6.6.2",
     "escape-html": "^1.0.3",
+    "express": "^5.1.0",
     "jsonc-parser": "^3.3.1",
     "lru-cache": "^11.2.2",
     "markdown-it": "^14.1.0",
@@ -78,6 +80,7 @@
     "source-map-support": "^0.5.21",
     "undici": "^7.16.0",
     "write-file-atomic": "^6.0.0",
+    "ws": "^8.18.3",
     "zod": "^4.1.11",
     "zod-to-json-schema": "^3.24.6"
   },
@@ -112,7 +115,6 @@
     "@vitejs/plugin-react": "^4.0.0",
     "babel-plugin-react-compiler": "^1.0.0",
     "concurrently": "^8.2.0",
-    "cors": "^2.8.5",
     "dotenv": "^17.2.3",
     "electron": "^38.2.1",
     "electron-builder": "^24.6.0",
@@ -121,7 +123,6 @@
     "eslint": "^9.36.0",
     "eslint-plugin-react": "^7.37.5",
     "eslint-plugin-react-hooks": "^5.2.0",
-    "express": "^5.1.0",
     "jest": "^30.1.3",
     "playwright": "^1.56.0",
     "prettier": "^3.6.2",
@@ -132,8 +133,7 @@
     "typescript-eslint": "^8.45.0",
     "vite": "^4.4.0",
     "vite-plugin-svgr": "^4.5.0",
-    "vite-plugin-top-level-await": "^1.6.0",
-    "ws": "^8.18.3"
+    "vite-plugin-top-level-await": "^1.6.0"
   },
   "files": [
     "dist/**/*.js",

src/main.ts

@@ -1,17 +1,6 @@
 #!/usr/bin/env node
-/**
- * The main CLI entrypoint for cmux.
- *
- * When run as a CLI (via npm/npx), defaults to server mode.
- * When run as an Electron app, runs desktop mode.
- */
 
-// Check if running as CLI or Electron
-const isElectron = process.versions && process.versions.electron !== undefined;
-
-// CLI usage: run server by default (unless --desktop flag is passed)
-// Electron usage: run desktop
-const isServer = !isElectron || process.argv.includes("--server");
+const isServer = process.argv.length > 2 && process.argv[2] === "server";
 
 if (isServer) {
   // eslint-disable-next-line @typescript-eslint/no-require-imports