Add a health endpoint dependency graph for faster incident triage

[robertocarlous]

Why
Operators need to know which downstream services each health check depends on. A dependency graph would reduce time spent guessing whether the issue is database, Stellar RPC, or internal job state.

Acceptance criteria

• Document each endpoint’s dependencies.
• Show which checks are shallow versus deep probes.
• Include the dependency graph in the deployment or runbook docs.

[Menjay7]

Hi! I came across this issue and would love to work on it. I have experience with similar tasks and I'm confident I can investigate, implement a clean solution, and thoroughly test it before submitting a PR. If the issue is still open, I would appreciate it if you could assign it to me. Thank you!

[Menjay7]

Hi! I came across this issue and would love to work on it. I have experience with similar tasks and I'm confident I can investigate, implement a clean solution, and thoroughly test it before submitting a PR. If the issue is still open, I would appreciate it if you could assign it to me. Thank you!

[BigJohn-dev]

I’m interested in solving meaningful engineering problems and improving real-world software. I have experience with backend development, OOP, APIs, Git workflows, and building maintainable full-stack applications.

[Tobi-8]

oh, i have done this exact same thing before.
kindly assign