try: ip fix for cludflare

- Introduced AI File Sorting functionality to automatically organize documents into a smart folder hierarchy based on source, date, and topic.
- Updated README.md to include the new feature.
- Enhanced homepage components with new illustrations and descriptions for AI File Sorting.
- Refactored rate limiting logic to extract real client IPs more accurately.

surfsense_backend/app/routes/anonymous_chat_routes.py

@@ -51,12 +51,17 @@ def _get_or_create_session_id(request: Request, response: Response) -> str:
 
 
 def _get_client_ip(request: Request) -> str:
+    """Extract the real client IP, preferring Cloudflare's header."""
+    cf_ip = request.headers.get("cf-connecting-ip")
+    if cf_ip:
+        return cf_ip.strip()
+    real_ip = request.headers.get("x-real-ip")
+    if real_ip:
+        return real_ip.strip()
     forwarded = request.headers.get("x-forwarded-for")
-    return (
-        forwarded.split(",")[0].strip()
-        if forwarded
-        else (request.client.host if request.client else "unknown")
-    )
+    if forwarded:
+        return forwarded.split(",")[0].strip()
+    return request.client.host if request.client else "unknown"
 
 
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