Update app_gradio.py

app_gradio.py

@@ -68,6 +68,22 @@ from data.loader import get_dataset_districts, get_dataset_governorates
 from rag.retriever import StudentProfile
 from core import engine
 
+# Build the semantic-search index on cold start, if it is not already built.
+# HF Spaces' free tier gives no terminal access to run
+# `python -m src.rag.vectorstore` manually, so this runs it once per restart
+# instead. Guarded so a missing optional dependency degrades to no semantic
+# search rather than crashing the whole app.
+try:
+    from rag.vectorstore import get_vectorstore
+
+    _vs = get_vectorstore()
+    if _vs.collection.count() == 0:
+        print("Building semantic search index (first run)...")
+        _vs.build_index()
+        print(f"Index built: {_vs.collection.count()} documents")
+except Exception as _e:
+    print(f"Semantic index not built (optional feature disabled): {_e}")
+
 NO_TRACK = "غير محدد"
 LANG_FLAGS = {"العربية": "🇱🇧", "الانكليزية": "🇬🇧", "الفرنسية": "🇫🇷"}
 # (label, value) pairs: the flagged label is presentation; the engine still
@@ -1095,4 +1111,4 @@ with gr.Blocks(title=PAGE_TITLE) as demo:
 if __name__ == "__main__":
     # Gradio 6 takes presentation options at launch time. Hugging Face Spaces
     # runs this file as __main__, so this path serves the Space too.
-    demo.launch(theme=theme, css=CSS, head=FORCE_LIGHT)
+    demo.launch(theme=theme, css=CSS, head=FORCE_LIGHT)