Update src/qa.py

src/qa.py

@@ -54,17 +54,23 @@ os.environ.update({
 })
 
 # ==========================================================
-# 2️⃣ Embedding Model (E5-small-v2)
+# 2️⃣ Embedding Model (Multilingual E5 — supports Hindi + English)
 # ==========================================================
 try:
+    # 🆕 Switched to multilingual model (same 384-dim dimension, so FAISS stays compatible)
     _query_model = SentenceTransformer(
-        "intfloat/e5-small-v2",
+        "intfloat/multilingual-e5-small",
         cache_folder=CACHE_DIR
     )
-    print("✅ Loaded embedding model: intfloat/e5-small-v2 (fast mode)")
+    print("✅ Loaded embedding model: intfloat/multilingual-e5-small (multilingual mode)")
 except Exception as e:
-    print(f"⚠️ Embedding load failed ({e}), using MiniLM fallback")
-    _query_model = SentenceTransformer("sentence-transformers/all-MiniLM-L6-v2", cache_folder=CACHE_DIR)
+    print(f"⚠️ Embedding load failed ({e}), attempting English-only fallback...")
+    try:
+        _query_model = SentenceTransformer("intfloat/e5-small-v2", cache_folder=CACHE_DIR)
+        print("🔁 Fallback: intfloat/e5-small-v2 loaded successfully.")
+    except Exception:
+        _query_model = SentenceTransformer("sentence-transformers/all-MiniLM-L6-v2", cache_folder=CACHE_DIR)
+        print("🔁 Final fallback: all-MiniLM-L6-v2 loaded.")
 
 # ==========================================================
 # 3️⃣ GPT-4o via SAP Gen AI Hub — Lazy Initialization