Add ZK trusted setup verification instructions for users

[collinsadi]

Advanced users cannot independently verify production zkey hashes against ceremony transcripts.

Publish step-by-step instructions to verify zkey hash against signed ceremony output.

Acceptance criteria:

• Instructions use only open tools.
• Expected hashes match manifest.
• Linked from reputation settings.

[Mitch5000]

@Mitch5000 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Please maintainer... Assign me this issue... I'll resolve it without errors 🙏

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Mitch5000 to this issue.

[Clinton6801]

@Clinton6801 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello, I've gone through the description and i would love to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Clinton6801 to this issue.

[Frontman-Code]

@Frontman-Code has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

will love to work on it

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Frontman-Code to this issue.