Fix corner cases in protocol detection and connection cleanup

- Fix double-resolve race in probeTS3Query (data event vs connect timer)
  by guarding with a resolved flag
- Fix double-resolve in probeTS6HttpQuery similarly
- Support custom query ports in detectServerProtocol via DetectOptions
- Clean up httpQuery and detectedProtocol on disconnect()
- Add res.on("error") handler in HTTP Query client to avoid unhandled errors
- Improve logging: warn with actionable message when protocol is unknown

https://claude.ai/code/session_016WhH58avUD9xy2dgADJgTh

src/ts-protocol/http-query.ts

@@ -82,6 +82,7 @@ export class TS6HttpQuery extends EventEmitter {
           let data = "";
           res.setEncoding("utf-8");
           res.on("data", (chunk: string) => (data += chunk));
+          res.on("error", reject);
           res.on("end", () => {
             let parsed: unknown;
             try {