Remove HTTP server mode, keep MCP + CLI only

Drop express dependency and HTTP server in favor of MCP-only architecture.
CLI still works for quick screenshots and queries.

- Delete src/server.ts and src/server.test.ts
- Remove express, @types/express, supertest from dependencies
- Update CLI to show help when no URL provided
- Remove server exports from index.ts

-33 packages removed, 757 lines deleted.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

dist/index.d.ts

@@ -1,6 +1,4 @@
 export { ClaudeBrowser } from './browser.js';
-export { BrowserServer, startServer } from './server.js';
 export { createFavicon, convert, resize, crop, compress, thumbnail, type FaviconResult, type ImageResult, type FitType, type FormatType, type ThumbnailSize, } from './image.js';
 export type { BrowserOptions, BrowserCommand, CommandResponse, ElementInfo, SuccessResponse, ErrorResponse, GotoCommand, ClickCommand, TypeCommand, QueryCommand, ScreenshotCommand, UrlCommand, HtmlCommand, BackCommand, ForwardCommand, ReloadCommand, WaitCommand, NewPageCommand, CloseCommand, EvalCommand, FaviconCommand, ConvertCommand, ResizeCommand, CropCommand, CompressCommand, ThumbnailCommand, } from './types.js';
-export type { ServerOptions } from './server.js';
 //# sourceMappingURL=index.d.ts.map