Shell Architecture :: Shell Architecture

Standards and explanation for OpenShellOrg’s structured-shell direction — not a product repo (yet).

Thesis (short)

Structured data pipelines beat treating stdout as both data and display. We endorse Nushell as the Unix-centric reference implementation. PowerShell pioneered object pipelines; we recommend Nushell going forward.
SOS (flag syntax) and structured shells are complementary layers — spelling options consistently does not replace typed pipelines, and vice versa.
DevCentr recommends and configures; OpenShellOrg standardizes and builds companion tooling.
Future topics include display vs transport decoupling, terminal protocol notes, TUI vs structured stdout, and speculative mixed-fonts research.
Tool runs — compilers and long tools as structured runs on a bus (daemon + embeddable library + wrappers), not stderr-as-product; see Tool runs and diagnostics and Command channels.
Open Shell in D — default OSO syntax mode; Nushell reproduced as nu compatibility baseline (Open Shell).

Thesis — structured pipelines vs byte streams
Layers — SOS / data model / terminal presentation stack
SOS and structured shells — complementary layers
Entrypoint Dispatch — auto-install + re-exec at the shell boundary (pairs with DevCentr Toolchain Management)
Dev-Centr — alignment without merging orgs
DevCentr and OpenShellOrg — who does what (detail)
Shell Host and Env Refresh
open-terminal host — greenfield D host (decoupled session index)
Host chrome negotiation — insert top context bar into host chrome
Host native widgets — app top bars + hover GUI channel
Tool runs and diagnostics — compile UX as bus + daemon + embed library
Command channels — per-command stdout/stderr/diagnostics switcher
Stance — do not reinvent Nushell
Future topics — TUI vs stdout, mixed fonts
PlayTime at the shell boundary — Dev-Centr cousin; argv runner; not moved yet
Argv as execution currency
Host identity as a contract

open-shell-org — SOS certification and flag syntax
nu-require — require / relaunch under Nushell
nu-emit — emit structured rows from C without hand-JSON
DevCentr · docs.devcentr.org — toolchain orchestration + Toolchain Management Pattern
Planned: openshellorg/env-refresh; forked: openshellorg/terminal (see Shell Host and Env Refresh)
openshellorg/open-terminal — greenfield D host (open-terminal host)
Nushell

Not NVIDIA OpenShell — that is agent sandboxing. We care about structured pipes + CLI DevX.