docs: clarify RPC credentials security boundary #33196

1. 
   crStiv commented at 1:56 pm on August 15, 2025: none

   Explicitly states that RPC credentials grant full administrative access to the node and filesystem resources accessible by bitcoind. Adds a new section in JSON-RPC-interface.md to address issue #32274 by documenting that providing RPC credentials to untrusted clients

   reopened #32424

   P.S. I’ve tried to somehow squash all the commits from the previous pr but accidentally closed the pr and had no idea how to return back, therefore created a new pr, I’m really sorry for the inconvenience

2. docs: clarify RPC credentials security boundary 433954b6a5
3. DrahtBot added the label Docs on Aug 15, 2025
4. 
   DrahtBot commented at 1:56 pm on August 15, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/33196.

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5. 
   janb84 commented at 9:03 am on August 18, 2025: contributor

   ACK 433954b6a5bd7480f7e05e58eafeac1dc6dfae7c

   This PR adds information about security considerations when using RPC clients. Although bitcoin-core has done everything to minimise the risks of using RPC, it’s good to inform the user of the risks and the extra security precautions the user can take.

   Informing the public about security risks and methods to mitigate them demonstrates responsible stewardship; therefore, I support this pull request.

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crStiv DrahtBot janb84

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