SEO improvements

backend/app.py

@@ -584,6 +584,23 @@ async def reload_data(
     return {"status": "reloaded"}
 
 
+# =============================================================================
+# SEO FILES
+# =============================================================================
+
+
+@app.get("/robots.txt")
+async def robots_txt():
+    """Serve robots.txt for search engine crawlers."""
+    return FileResponse(settings.frontend_dir / "robots.txt", media_type="text/plain")
+
+
+@app.get("/sitemap.xml")
+async def sitemap_xml():
+    """Serve sitemap.xml for search engine indexing."""
+    return FileResponse(settings.frontend_dir / "sitemap.xml", media_type="application/xml")
+
+
 # Mount static files directly (must be after all routes to avoid catching API calls)
 if settings.frontend_dir.exists():
     app.mount("/static", StaticFiles(directory=settings.frontend_dir), name="static")