🤖 Lazy-load IpcMain to reduce startup time & lowercase package name

[ammar-agent]

Problem

App startup took 6+ seconds for Electron users because main.ts immediately loaded IpcMain, which transitively imports the entire AI SDK stack (ai, @ai-sdk/anthropic, ai-tokenizer, etc.). These are large modules that weren't needed until the window was created and the user started interacting.

Additionally, the package was being built as "Cmux" instead of "cmux".

Solution

1. Lazy-load IpcMain

Convert static imports to dynamic imports in createWindow(). Config, IpcMain, and tokenizer modules now load on-demand when the window is created, not at app startup.

Before:

import { Config } from './config';
import { IpcMain } from './services/ipcMain';

const config = new Config();
const ipcMain = new IpcMain(config); // Heavy AI SDK loaded immediately

After:

import type { Config } from './config';
import type { IpcMain } from './services/ipcMain';

let config: Config | null = null;
let ipcMain: IpcMain | null = null;

async function createWindow() {
  if (!config || !ipcMain) {
    // Load only when needed
    const [{ Config: ConfigClass }, { IpcMain: IpcMainClass }] = await Promise.all([
      import('./config'),
      import('./services/ipcMain'),
    ]);
    config = new ConfigClass();
    ipcMain = new IpcMainClass(config);
  }
  // ... create window
}

2. Lowercase package name

Changed productName from "Cmux" to "cmux" in package.json build config.

Implementation Details

• Changed Config/IpcMain/loadTokenizerModules imports to type-only imports
• Created module-level variables to cache loaded modules
• Made createWindow() async to await dynamic imports
• Moved tokenizer loading to after window creation
• Fixed e2e test userData path (can't use config.rootDir before config loads)
• Added ESLint justification for dynamic imports

Testing

• ✅ Unit tests pass (379 tests)
• ✅ Type checking passes
• ✅ ESLint passes

Generated with cmux

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.