The release and knowledge tools follow the house rules too

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W4YtEJrgxG12Pc39Fai8Bd

tools/knowledge.cs

@@ -59,7 +59,7 @@ using (var input = File.OpenRead(download))
 using (var file = File.Create(Path.Combine(output, "ip2asn.bin")))
   AsnTable.Write(file, sourceDate, Sources.IpToAsn(input));
 foreach (var stale in new[] { "networks.bin", "carriers.json", "registry.bin" }) File.Delete(Path.Combine(output, stale));
-string sha;
+var sha = default(string);
 using (var input = File.OpenRead(download)) sha = Convert.ToHexStringLower(SHA256.HashData(input));
 File.WriteAllText(Path.Combine(output, "SOURCE.txt"), $"iptoasn.com, Public Domain Dedication and License (PDDL) 1.0\n{Fallback}\nlast-modified {sourceDate:O}\nsha256 {sha}\n");
 Report();