feat(browser): migrate to CloakBrowser for browser emulation and streamline dependency management

- Replace Playwright-based browser emulation with CloakBrowser as default
- Update config to support CloakBrowser options and humanization presets
- Refactor browser helper to use CloakBrowser context and remove cf_clearance dependency
- Update Dockerfile, entrypoint, and update scripts to install CloakBrowser runtime
- Ensure CloakBrowser kernel is pre-installed during local setup and dependency updates
- Add tests for CloakBrowser integration and legacy compatibility

docker/Dockerfile

@@ -109,9 +109,8 @@ COPY --from=prepare_venv --chmod=777 ${VENV_PATH} ${VENV_PATH}
 COPY --from=prepare_venv /usr/local/bin/uv /usr/local/bin/uv
 COPY --from=prepare_venv /usr/local/bin/uv-pip-compat /usr/local/bin/uv-pip-compat
 
-# playwright 环境
+# 浏览器运行依赖
 RUN playwright install-deps chromium \
-    && playwright install-deps firefox \
     && apt-get autoremove -y \
     && apt-get clean \
     && rm -rf \