add hub instance info (#869)

- Improvement: Hub module listing now includes per-instance process metrics (memory, CPU time, working set, pagefile usage)
- Improvement: Hub now monitors provisioned instance health in the background and refreshes process metrics periodically
- Improvement: Hub no longer exposes raw `StorageServerInstance` pointers to callers; instance state is returned as value snapshots (`Hub::InstanceInfo`)
- Improvement: Hub instance access is now guarded by RAII per-instance locks (`SharedLockedPtr`/`ExclusiveLockedPtr`), preventing concurrent modifications during provisioning and deprovisioning
- Improvement: Hub instance lifecycle is now tracked as a `HubInstanceState` enum covering transitional states (Provisioning, Deprovisioning, Hibernating, Waking); exposed as a string in the HTTP API and dashboard

1 files changed, 1 insertions, 1 deletions

diff --git a/src/zencore/process.cpp b/src/zencore/process.cpp
index 0c55e6c7e..29de107bd 100644
--- a/src/zencore/process.cpp
+++ b/src/zencore/process.cpp
@@ -1564,7 +1564,7 @@ WaitForThreads(uint64_t WaitTimeMs)
 }
 
 void
-GetProcessMetrics(ProcessHandle& Handle, ProcessMetrics& OutMetrics)
+GetProcessMetrics(const ProcessHandle& Handle, ProcessMetrics& OutMetrics)
 {
 #if ZEN_PLATFORM_WINDOWS
 	FILETIME CreationTime;