Description

src/Servy.Core/Helpers/ProcessHelper.cs:57 — GetCpuUsage(int pid) is named as a pure getter but:

1. Calls PruneDeadProcesses() on every invocation (iterates all cached PIDs, removes dead ones)
2. Writes a new CpuSample into the static ConcurrentDictionary on every call

A method named "Get" should not perform maintenance operations or mutate shared state.

Suggested fix

Separate the pruning into an explicit MaintainCache() method called on a timer, and rename or document the state mutation.