* docs(rfc): add Transparent Stream activity display mode RFC (#3820)
Proposes Transparent Stream as an opt-in, chronological activity display
mode alongside the default Compact Worklog (#3400/#3401). Captures the
display-mode split agreed in #3820: each tool call as a first-class
chronological event, interleaved with reasoning/progress, with compact
previews, consistent across live, settled, and reload/replay paths.
Documents the asymmetry in the existing `simplified_tool_calling` toggle
(live-only, no settled/reload branch) and the three concrete integration
points so the follow-up can be sliced safely. Doc-only; no behavior change.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* docs(rfc): refine Transparent Stream rollout scope
---------
Co-authored-by: Frank Song <franksong2702@gmail.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
