This is the Vite/React dashboard used by ocx gui in packaged installs.

Run the proxy and dashboard as two separate dev processes:

# terminal 1, repo root
bun run dev:proxy

# terminal 2, repo root
bun run dev:gui

The root proxy dev server exposes API endpoints such as /healthz, /v1/responses, and /api/*. It serves GET / only when a packaged dashboard build exists at gui/dist, so a fresh clone should use the Vite dev server while editing the UI.

From the repo root:

bun run build:gui

That command installs/builds this dashboard and copies the production assets into the package layout used by ocx gui.

cd gui
bun run lint         # ESLint — hard local/CI gate (`GUI lint` in CI)
bun run doctor       # React Doctor vs origin/main (changed-scope, gates on findings)
bun run doctor:full  # Full-tree React Doctor (gates on findings)

From the repo root:

bun run doctor:gui              # same as gui doctor
bun run doctor:gui:full
bun run setup:hooks             # pre-push runs doctor when gui/ changed

Fix ESLint errors first. Use doctor / doctor:full for deeper React triage.

cd gui
bun run build
bun run test:quota-hover

This opt-in check is not part of CI. It moves a real pointer from a quota chip into its popover in an installed Chrome/Chromium (CHROME_BIN when not on PATH), which happy-dom unit tests cannot hit-test. Rebuild after changing CSS: it uses the production CSS in dist.

cd gui
bun run build
bun run test:sidebar-version

This opt-in check uses an installed Chrome/Chromium through its local DevTools protocol, with no Playwright dependency or automatic browser download. Set CHROME_BIN to the executable when it is not on PATH (including macOS/Windows). It fails with an actionable error when the browser or production build is missing; it does not silently skip assertions.

The offline fixture uses the production CSS bundle and App header markup, not copied CSS rules. Across 128 combinations of light/dark theme, eight viewport widths, four release/prerelease/build strings and two font sizes, it verifies full text visibility, containment, short release text staying on one line, and no intersection with the mobile drawer close button. A short badge stays beside the product name whenever the measured row budget allows it; larger OS font fallbacks may move the complete badge below the name rather than clip it. Results and a screenshot are written to .tmp/sidebar-version-browser/; pass an output directory after the command to change it. No management API, proxy credentials, or live providers are used.

Chrome's sandbox stays enabled by default. CHROME_NO_SANDBOX=1 is an explicit opt-in only for an already-isolated root test container that cannot run Chrome's sandbox; it is not needed or recommended on a normal workstation.