debug: show translation cache key

src/streamlit_app.py

@@ -445,6 +445,14 @@ if st.session_state.get("do_search"):
                     temperature=temperature,
                 )
                 if full_attractions:
+                    # DEBUG: compute key and check cache
+                    import json as _j
+                    cat_hash_debug = _j.dumps(params.get("categories") or {}, sort_keys=True)
+                    debug_key = (params["city"], cat_hash_debug, sec_lang)
+                    from services.recommender import _TRANSLATION_CACHE
+                    found = debug_key in _TRANSLATION_CACHE
+                    st.caption(f"🔑 Cache key: `({params['city']}, {cat_hash_debug[:30]}..., {sec_lang})` — **{'FOUND' if found else 'MISSING'}**")
+                    
                     translated = translate_items_cached(
                         items=full_attractions,
                         second_language=sec_lang,