⚡ Bolt: [performance improvement] Disable reverse DNS resolution for ping

[ManupaKDU]

💡 What: Added the -n flag to the ping command in testping1.py to disable reverse DNS resolution during network scans. Also added a journal entry in .jules/bolt.md documenting this learning.

🎯 Why: When ping is used for network scanning without the -n flag, it attempts a reverse DNS lookup for every IP address. If an IP address lacks a PTR record or if the DNS server is slow or unresponsive, this lookup causes a multi-second delay per host. In a concurrent scan over an entire subnet, these cumulative delays become a severe performance bottleneck.

📊 Impact: Significantly reduces the time required to scan large subnets, especially on networks with incomplete DNS records or unresponsive DNS servers. The scanning process is bounded only by network latency rather than artificial DNS timeouts.

🔬 Measurement: You can verify the performance improvement by running the scanner on a subnet with many offline hosts or hosts lacking PTR records before and after applying this change, then comparing the total execution times. The unit tests have also been updated to ensure the -n argument is correctly passed to the subprocess.call.

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PR created automatically by Jules for task 2710800940548770037 started by @ManupaKDU

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