Ten findings from reviewing the accumulated blitz/spawn-v2 diff. The two that could wedge a repo: - The cleanup guard refused any worktree whose commits were on no other ref, which is every ordinary unpushed branch. Paths are deterministic now, so the leftover tree blocked the next spawn and each branch became a one-shot. `worktree remove` keeps refs/heads/<branch>, so committed work is never at risk: guard on an unclean working tree alone. - A worktree whose directory had vanished failed the git probe and was reported as unsaved work, stranding the registration forever. Prune it instead, and prune before `worktree add` tests the target path. Also: - The CLI hardcoded create_branch: true, so the daemon's existing-branch path was unreachable. Added --existing-branch. - Pastes were forwarded without their DECSET 2004 markers, so a remote shell ran a multi-line paste line by line. - spawnForm emitted before its seed was restored and after destroy(), so a rebuilt draft blanked its cwd and a dead form clobbered the live one. - showRawCwd and the probe's worktree untick never reached the leaf. - A late autocomplete fetch reopened the popup under a blurred input. - The "remove worktree when killed" checkbox promised something the daemon no longer honours; removed.
maestro-web
Browser UI for Maestro. Talks to a single local daemon over its /api/*
HTTP/WS surface — session catalog, spawn/kill, and terminal I/O.
Framework choice: vanilla TypeScript
No frontend framework. The UI is small enough that the cost of pulling in Preact / Solid / Leptos doesn't pay back. xterm.js does all the heavy rendering; everything else is a session tree and a spawn form, both trivial in plain DOM.
This decision is non-architectural — swap in a framework later without touching the daemon if needed.
Layout
src/
main.ts # entry point, hash-route dispatch
api.ts # daemon HTTP API client
events.ts # `/api/events` WebSocket subscriber
catalog.ts # session tree view (groups by working directory)
attach.ts # xterm.js + attach WS view
spawn.ts # spawn-session modal
theme.ts # dark/light theme toggle + persistence
types.ts # mirror of `maestro-protocol` JSON shapes
styles.css # design-system tokens + component styles
mock.ts # DEV-only review fixture (see Design)
Design
The visual system (OKLCH token palette, monospace-first typography, dark+light
theming, motion, components) is documented in ../DESIGN.md;
the tokens live in the :root block of src/styles.css. Strategic intent
(register, brand, principles) is in ../PRODUCT.md. Theme
follows the OS by default and can be pinned via the header toggle (persisted in
localStorage).
mock.ts is a DEV-only fixture (stripped from production builds): visit the dev
server with ?mock to seed a representative catalog without a running daemon,
?mock&spawn to open the spawn modal, and ?theme=light|dark to pin a theme.
Routing is hash-based:
#/→ catalog#/attach/<session-id>→ terminal
This keeps the static handler dumb (no SPA fallback needed). Concurrent
attaches: open the same #/attach/<id> URL in another tab.
Dev
pnpm install
pnpm dev # http://localhost:5173, proxies /api → http://127.0.0.1:7070
pnpm build # → dist/, embedded into the maestro-web binary at cargo build time
The Vite dev server proxies /api and the WebSockets to a local daemon.
Default is http://127.0.0.1:7070; point it elsewhere by exporting
MAESTRO_DAEMON_URL before pnpm dev:
MAESTRO_DAEMON_URL=http://laptop.lan:7070 pnpm dev
Production
pnpm build writes the bundle to web/dist/. The maestro-web crate embeds
that directory at compile time and serves it from /, reverse-proxying /api/*
to the daemon. See crates/maestro-web/src/static_bundle.rs.