DLPXDOC-6073 Document Concurrent gRPC Thread Behavior Based on CPU Count

[vimleshmishra]

Summary

• Adds a new Best Practices page, Concurrent_Plugin_Operations.md, documenting the Delphix Engine's concurrency limit for plugin operations: min(32, <Engine CPUs> + 4).
• Explains the impact (queued operations can look like a hung plugin call) and gives sizing/scheduling recommendations.

Context: root cause analysis from ESCL-5693, tracked as a docs task in DLPXDOC-6073.

Preview

https://vimleshmishra.github.io/virtualization-sdk/Best_Practices/Concurrent_Plugin_Operations/

Publishing note

Merging this into develop does not publish to developer.delphix.com — that only happens on pushes to a docs/x.y.z branch, and this PR isn't one. This just ensures the page ships whenever the next docs branch is cut for a future release.

For the immediate, live-now publish, see #699 (targets docs/5.1.0, the branch currently serving developer.delphix.com).

Test plan

• pipenv run mkdocs build --clean succeeds locally with no warnings
• Page renders correctly at Best_Practices/Concurrent_Plugin_Operations/ and appears in the left nav
• Internal link to Plugin_Operations.md resolves

🤖 Generated with Claude Code

[rakshandabhat]

Good to run linkcheck once.