add rotation

src/fgai/cli.py

@@ -181,7 +181,14 @@ def fetch_policies(args: argparse.Namespace) -> int:
 
 
 def listen_syslog(args: argparse.Namespace) -> int:
-    listen_udp_syslog(args.host, args.port, args.output, quiet=args.quiet)
+    listen_udp_syslog(
+        args.host,
+        args.port,
+        args.output,
+        rotate_bytes=args.rotate_bytes,
+        rotate_count=args.rotate_count,
+        quiet=args.quiet,
+    )
     return 0
 
 
@@ -267,6 +274,8 @@ def build_parser() -> argparse.ArgumentParser:
     listener.add_argument("--host", default="0.0.0.0", help="Bind address")
     listener.add_argument("--port", type=int, default=5514, help="UDP port. Use 514 only with sudo/capability.")
     listener.add_argument("--output", default="logs/fg_syslog.jsonl", help="File to append received logs to")
+    listener.add_argument("--rotate-bytes", type=int, default=25 * 1024 * 1024, help="Rotate active log at this size; 0 disables rotation")
+    listener.add_argument("--rotate-count", type=int, default=14, help="Number of compressed log archives to retain")
     listener.add_argument("--quiet", action="store_true", help="Do not print each received syslog message")
     listener.set_defaults(func=listen_syslog)