---
model: openai/gpt-5.6-sol
service: opencode
timestamp: 2026-08-19T18:46:40Z
git_ref: 481ba003
diff_cmd: git diff HEAD~1..HEAD
---

Migrate PR #484's downstream one-shot calls to PR #481's final
`tractor.to_actor.run()` contract after the stack rebase.

> `git diff HEAD~1..HEAD -- docs examples tests`

Pass target arguments positionally and bind target keyword-only inputs
with `functools.partial()`. Keep placement and runtime controls as
direct `to_actor.run()` keywords. Update the invalid-target-argument
test to expect local signature binding before actor startup and require
direct `RemoteActorError` propagation from linked one-shots.

Update API and guide prose to describe positional target inputs,
linked `Portal.open_context()` execution and per-child reaping instead
of the removed `Portal.run()` and target-`**kwargs` conventions.

Verification:

- core and migrated runtime batches: `97 passed`
- discovery and related lifecycle batch: `33 passed, 1 skipped`
- changed executable examples: `9 passed`
- mapped debugger cases: `12 passed, 6 skipped`
- Ruff, compilation and `git diff --check`: clean
