fix(ops): English replies from English prompts and ROLE_SYSTEM.en

Detect language from user message before UI hint, load ops ROLE_SYSTEM.en.md when en, and wire user_text through WS/HTTP/worker paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

interfaces/ws/turn_runner.py

@@ -165,7 +165,11 @@ async def run_agent_turn_via_bridge(
     ctx = conn.auth_ctx or {}
     tenant_id = str(ctx.get("tenant_id") or "")
     user_id = str(ctx.get("user_id") or "")
-    lang = resolve_runtime_lang(store=store, hint=str(p.get("lang") or ""))
+    lang = resolve_runtime_lang(
+        store=store,
+        hint=str(p.get("lang") or ""),
+        user_text=msg_text,
+    )
 
     manager_agent = build_gateway_executor(
         store,