gpui-rust-console

name	gpui-rust-console
version	0.2.0
description	Build and extend pd-console — Port Daddy's GPU-native macOS operator console (GPUI 0.2.x, Zed's Rust UI). Covers the render-agnostic Block/Pane(Surface) contract, the two-thread reqwest↔smol refresh pipeline, Taffy flexbox layout, uniform_list virtual scroll, focus + keyboard nav, the OKLCH theme and ICS maritime flag badges, GPUI's missing text-input, and the real feature-gated cargo/CI gate. Use when adding panes, visual polish, or debugging GPUI rendering/layout/focus in core/pd-console. NOT for the TypeScript daemon, generic Rust toolchain/borrow-checker help (use rust-with-claude-code), or non-pd GPUI apps with a different theme/architecture.
author	port-daddy
license	Apache-2.0
tags	["gpui","rust","ui","native","macos","console","oklch","maritime","port-daddy"]
metadata	{"category":"Native UI & Rendering","argument-hint":"[task: add-pane|layout|scroll|theme|maritime|text-input|verify]","pairs-with":["rust-with-claude-code","daemon-development","git-best-practices"]}

gpui-rust-console

Authoritative skill for core/pd-console (crate pd-console v0.2.0, ADR-0046): a GPU-native standalone macOS operator console built on GPUI 0.2.2, plus a headless ratatui REPL that renders the same panes. The defining idea: a pane emits render-agnostic Blocks; two renderers paint them. One pane, two faces — which is why every pane is unit-tested on cheap Linux runners while the Metal window builds only on macOS.

When to Use

✅ Use for:

• Adding or extending a pane/surface in core/pd-console/
• GPUI layout (Taffy flexbox), scroll (uniform_list/list), focus, keyboard nav
• The OKLCH theme (theme.rs) and ICS maritime flag badges (maritime.rs)
• Debugging the reqwest↔smol two-thread refresh pipeline or cx.notify() storms
• Designing text input where GPUI ships no widget (the pd tube cockpit)
• Getting the feature-gated cargo/CI gate right

❌ NOT for:

• The TypeScript daemon, routes, or agent.rs HTTP wiring beyond consuming it
• Generic Rust (borrow checker, async, FFI, testing idioms) → rust-with-claude-code
• A non-pd GPUI app — the theme, the 17-pane model, and the daemon contract are specific
• Generic macOS app packaging / notarization → rust-app-distribution

The Model in One Diagram

flowchart TD
  D["DaemonClient (reqwest)"] -->|"GET /route per pane"| PR
  subgraph PR["Producer: std::thread + current-thread tokio (2s loop)"]
    R["pane.refresh(&client).await"] --> V["pane.view() → Vec<Block>"]
  end
  PR -->|"std::sync::mpsc: Vec<(nav_idx, Vec<Block>)>"| CO
  subgraph CO["Consumer: GPUI foreground (smol, main thread, 500ms)"]
    U["window.update → view.update_panes"] --> N["cx.notify()"]
  end
  N --> PAINT["ConsoleView::render: Block → GPUI element (Tone resolved to OKLCH)"]
  CO -.->|"control_tx: ControlMsg::InterruptLane"| PR

reqwest needs tokio; GPUI runs smol; they cannot share an executor. The producer owns the daemon + all 17 panes and mpscs Blocks to the consumer; control flows back on a second channel. Use channels, never Arc<Mutex<State>> (it blocks the renderer — the #1 GPUI perf bug). Full detail: .