style(browser): fix pre-existing ruff lints in server.py (RUF100, E501)

Drive-by: browser/server.py was never linted (pre-commit ruff is scoped to
backend/), so #909 left an unused noqa + a 101-char line. Cleaned up while
editing this file for the proxy fix.

tradein-mvp/browser/server.py

@@ -87,7 +87,7 @@ async def _launch_browser() -> None:
     """Запускает AsyncCamoufox и сохраняет browser + CM в модульных переменных."""
     global _browser, _browser_cm, _page_counter
 
-    from camoufox.async_api import AsyncCamoufox  # noqa: PLC0415
+    from camoufox.async_api import AsyncCamoufox
 
     proxy = _parse_proxy(SCRAPER_PROXY_URL)
     kwargs: dict[str, object] = {
@@ -180,7 +180,9 @@ async def fetch_handler(request: web.Request) -> web.Response:
         try:
             html = await _do_fetch(url)
         except Exception as exc:
-            logger.error("tradein-browser: fetch error url=%r: %s: %s", url, type(exc).__name__, exc)
+            logger.error(
+                "tradein-browser: fetch error url=%r: %s: %s", url, type(exc).__name__, exc
+            )
             return web.json_response({"error": f"{type(exc).__name__}: {exc}"}, status=500)
 
     return web.json_response({"html": html})