基于 Firefox 的隐蔽后端,用于 BrowserToolkit (兴趣检查)

hey, before building it, I wanted to check if there would be interest in an optional Firefox-based stealth backend for `BrowserToolkit`, parallel to the default Chromium-via-Playwright path. selected via an extra parameter, no change to defaults. motivation: GAIA evaluation runs hit anti-bot walls on a growing share of target sites. related issues: #544 (anti-bot verification & MAX_TRY), #317 (auto captcha solve feature request), #427 (infinite scroll_down at the bottom of a page using BrowserToolkit). a Firefox build with fingerprint patches at the C++ source code level avoids the JS-shim detection surface that the standard playwright-stealth approach uses, so pages currently returning empty or 403 to the agent would render normally. the backend wraps feder-cr/invisible_playwright, which drives a patched Firefox 150 binary (feder-cr/invisible_firefox, MPL-2.0, same license as Firefox upstream). two integration paths are possible: - a `BrowserToolkit(backend='invisible_firefox')` param (requires a small companion change in camel-ai/camel where the toolkit lives) - an `examples/run_invisible_firefox.py` showing the wiring without touching upstream camel also opened a draft PR #614 under `community_usecase/Invisible-Firefox-Stealth-Backend/` with the proposal doc. discussions are disabled on this repo so opening the interest check here. if not in scope i'll close everything without noise.