Resource leaks and AutoCloseable best practices

[sfloess]

Review finding: Many tests and code paths leak resources; incomplete try-with-resources usage.

Audit all AutoCloseable usage, temp files, streams, connections.

Priority: High

[Aashita101]

Hi! I'd love to work on this. Could you please assign it to me? I'll have a PR ready soon!

[sfloess]

@Aashita101 - I have no issues with your contributing! In fact, thank you! I am doing stuff with AI at the moment and this may be resolved shortly.

[sfloess]

@Aashita101 - on second thought, sure! I don't want to dissuade any contributors! I will assign to u

[sfloess]

@Aashita101 - done, assigned to you! Thank you again!

[Aashita101]

Hi! Thank you so much for assigning this to me and for being so welcoming 😊 I just realized this issue isn't part of GSSoC, and since I'm currently focused on GSSoC contributions, I'd like to step back so someone else can take it. Feel free to unassign me — really appreciate your time! 🙏

[sfloess]

@Aashita101 - no worries! All good! And thank you again!