Case 003 Developer Tooling

Terminal UI Platform

01 — Problem

Terminal dashboards and ops tools normally mean a pile of TUI library dependencies, each with its own theming, input model and licence. There was no single C# platform for building retro-terminal tools that could also ship each tool as its own standalone binary.

02 — Fix

A hand-rolled terminal UI framework and showcase app in C# — single-buffer ANSI renderer, reflection-discovered screen plugins, a widget library, and a product publisher that emits each curated screen-set as a trimmed self-contained executable.

Exhibit pending Visual evidence to be filed

03 — Proof

External dependencies: 0 NuGet packages — BCL only
Screen plugins: 37 in the active build, 18 more archived
Reusable widgets: 30+ (DataGrid, TreeView, DiffView, Markdown, Calendar…)
Roadmap: 85/85 brainstormed items shipped
Hand-rolled protocols: MQTT 3.1.1 client, DPAPI secret store, once/interval/daily/weekly scheduler
Standalone publishing: trimmed single-file exe per product, verified end-to-end

04 — Method

C# .NET 10 on the bare BCL — every renderer, widget and protocol built in-repo by agents working from a written architecture doc, with strict plugin conventions so parallel agents could add screens without colliding.