Remaining review threads requested clearer scheduling intent, result
ownership and Portal RPC usage across the migrated examples, plus a
more descriptive concurrent-primes filename.
Explain the relevant example boundaries, fix the transport typo, expand
the local helper signature and rename the live primes example and guide
reference while preserving historical Prompt-IO paths.
Review: PR #481 (goodboy)
https://github.com/goodboy/tractor/pull/481#pullrequestreview-5012942328
(this patch was generated in some part by `opencode` using `gpt-5.6-sol` (`openai`))