run-glasses-app

name	run-glasses-app
description	Run, launch, build, test, or screenshot the Even G2 glasses app (the Vite WebView app rendered on the Even Realities G2). Use when asked to start the glasses app, drive the Even Hub simulator, capture a 576x288 glasses screenshot, or confirm a UI/render/input change works in the actual running app.

Run the Even G2 glasses app

The glasses app is a TypeScript + Vite WebView app that renders on the Even Realities G2 display (576×288). You don't need real hardware: the Even Hub simulator renders the app in a native window and exposes an automation HTTP API (/api/ping, /api/console, /api/input, /api/screenshot/glasses). The driver is .Codex/skills/run-glasses-app/sim-drive.mjs — it talks to that API so you can send gestures and grab the glasses render programmatically.

All paths below are relative to the glasses-app/ package root.

Verified on macOS (darwin, arm64) — the simulator ships per-platform native binaries (@evenrealities/sim-darwin-arm64). It opens a real window, so it needs a display server; on a headless box wrap the npm run sim step in xvfb-run (not verified here).

Prerequisites

• Node ≥ 22, npm ≥ 10 (verified: node v24.16.0, npm 11.13.0).
• npm install — installs deps including @evenrealities/evenhub-simulator and the evenhub CLI (already vendored in node_modules/.bin).

Build

npm run build      # tsc + vite build -> dist/

To package a sideloadable .ehpk for real glasses: npm run pack.

Run (agent path) — simulator + driver

The simulator needs the Vite dev server already running. Use two terminals (or background the first two), then drive with the script.

# 1. dev server (Vite on 0.0.0.0:5173)
npm run dev

# 2. simulator with the automation port the driver expects
npx evenhub-simulator http://localhost:5173 --automation-port 9898
#    (equivalently: npm run sim — same target, same port)

# 3. drive it
node .Codex/skills/run-glasses-app/sim-drive.mjs ready          # wait for "[glasses] ready"
node .Codex/skills/run-glasses-app/sim-drive.mjs shot before    # docs/e2e/before.png
node .Codex/skills/run-glasses-app/sim-drive.mjs input down     # send a gesture (scroll)
node .Codex/skills/run-glasses-app/sim-drive.mjs turn "hi" after# click->wait->screenshot
node .Codex/skills/run-glasses-app/sim-drive.mjs console 20     # tail in-app console

Screenshots land in docs/e2e/. Open the PNG and look at it — a real run shows the green G2 render (e.g. Hermes ●, model/provider lines, ready for input). The simulator's /api/input accepts exactly four gestures: click double_click up down — any other string returns HTTP 400.

One-shot smoke (the existing committed harness)

scripts/smoke-sim.mjs (run via npm run sim:check) does ready → click → screenshot → tail console in one go. Use it to confirm the whole pipeline:

npm run sim:check
# -> "OK - simulator responded, app rendered, click triggered a turn"
#    Screenshot saved: docs/e2e/smoke-<ts>.png

Run (human path)

npm run qr prints a sideload QR, but it targets localhost; real glasses need the Mac's LAN IP: npx evenhub qr --url http://<lan-ip>:5173. Useless for headless verification — use the simulator path above.

Test

npm test           # vitest — verified: 11 files, 75 tests passed

Gotchas

• The simulator does not start the dev server. Start npm run dev first or the simulator loads a blank/erroring page. The driver's error hint reminds you to check this.
• /api/input only accepts click double_click up down. Everything else (swipe_up, long_press, tap, triple_click, …) returns HTTP 400 — the simulator validates the gesture name. The driver surfaces that 400 as an error. A 200 means the gesture was delivered, but check console/a screenshot to confirm the app reacted.
• double_click is EXIT — don't send it in a screenshot flow unless you mean to leave the current view. click in a session triggers a turn; up/ down scroll the list/stream.
• turn lands on the recording view (often near-blank). A click from an idle session starts mic capture, so the screenshot right after shows the recording state, not a streamed reply. To capture a rendered reply you need a connected bridge + a real voice/text round trip. For a guaranteed full render, use shot on the list/session view or npm run sim:check.
• Only /api/screenshot/glasses exists. /api/screenshot, /api/screenshot/window, etc. all 404.
• timeout is not on macOS. The timeout 60 node ... idiom fails with command not found; drop it or use gtimeout (coreutils).
• The app connects to the bridge at VITE_BRIDGE_LAN_URL from .env.local (ws://…:8765). If a Hermes bridge is running on the LAN, the render shows a live session; if not, the app still renders but stays in a connecting state. Copy .env.example → .env.local and set the URL + token if needed.

Troubleshooting

• app never logged "[glasses] ready" → the dev server isn't up, or the simulator was pointed at the wrong URL. Confirm curl -s -o /dev/null -w "%{http_code}" http://localhost:5173 returns 200, then relaunch the sim.
• ERROR: /api/ping -> … / connection refused → the simulator isn't running with --automation-port 9898. Relaunch it (npm run sim).