---
path: /studio/aja/basic-quality-metrics
surface: studio
domain: aja
auth: signed-in + studio entitlement
source: apps/oshun/web/src/app/studio/aja/basic-quality-metrics/page.tsx
status: walked + e2e-covered
last_walked:
  '2026-07-02 quality-metrics-lane console addendum — Playwright real-dev-infra
  coverage now proves signed-in render, route-map contract, quick-action href
  order, ready dimension catalog, 44 px submit target, short-track client guard
  with no POST, real BFF zigzag motion-quality result, fail-closed
  loading/unauthorized/malformed-catalog states, mobile no-overflow, and direct
  BFF 401/403/400/200 gates. Spec:
  apps/oshun/web/e2e/studio-aja-quality-metrics-lane-consoles.spec.ts.'
  '2026-05-29 automated runtime walk (Playwright headless) — render, /v1 data
  (2xx), console/page-errors, expected content, screenshot verified; live
  screen-reader, touch, offline, and telemetry-delivery checks pending a manual
  AT pass. Evidence: WALKTHROUGH/results/runtime-sweep-2026-05-29.md; body
  re-derived 2026-06-03 from current source (lane-console architecture)'
---

# Studio Aja · Basic Quality Metrics

## Purpose

Admin lane console for capture-take quality scoring. It wires the real
`@aja/motion-quality` `analyzeBasicQuality` composite via
`/v1/admin/aja/basic-quality-metrics`: the operator supplies a single-joint
X-position track (one value per frame) plus a frame rate, and the engine scores
the take across six deterministic analyzers (jitter, foot sliding, bone-length
stability, joint-angle limits, smoothness, physical plausibility) into one
weighted rating, with the exact peak acceleration / jerk detail surfaced.

## Entry points

- **Direct URL / bookmark** — `/studio/aja/basic-quality-metrics`; metadata sets
  `alternates.canonical`
- **Linked from `/studio`** Domain-bridge studios section (Aja sub-area)
- **Quick action** — "Open Aja Segmentation workspace"
  (`/studio/aja/segmentation`)

## Layout regions

`page.tsx` renders inside `<ShellLayout active="studio">`:

- **Workspace** `StudioAjaBasicQualityMetricsWorkspace` — `<h1>` "Aja Basic
  Quality Metrics Workspace" + summary
  (`data-aja-basic-quality-metrics-summary`), the dimensions list
  (`data-aja-bqm-dimensions`, weight per dimension), then the assess form
- **Route Map panel** (`data-aja-basic-quality-metrics-route-map`, `<h2>`) — 5
  entries from `STUDIO_AJA_BASIC_QUALITY_METRICS_ROUTE_MAP`
- **Quick-action lane** — `quickAction` links: segmentation, `/studio`

## States

- [x] **Loading** — `data-aja-bqm-loading` "Loading quality dimensions…" while
      `GET /v1/admin/aja/basic-quality-metrics` is in flight
- [x] **Unauthorized (gated)** — `data-aja-bqm-unauthorized` on 401/403; admin
      scope message ("Aja workspace scope required to view quality metrics.")
- [x] **Error** — `data-aja-bqm-error` on non-OK / malformed / network failure
- [x] **Ready (form)** — `data-aja-bqm-assess-form` once the dimension catalog
      loads
- [x] **Result** — `data-aja-bqm-result` (`-overall`, `-rating`, `-peak-accel`,
      `-peak-jerk`, per-dimension scores) after a successful POST; validation
      error in `data-aja-bqm-assess-error`
- [x] **Offline** — SSR shell; lane error state when `fetch` unavailable
- [x] **Standalone PWA** — desktop layout; `quickAction` anchors wrap
- [x] **Empty** — N/A; dimensions catalog is constant

## Interactions

### Assess form

- [x] **Joint X-position track** (`<input data-aja-bqm-field-track>`) —
      comma-separated, one value per frame (≥3)
- [x] **Frame rate (Hz)** (`<input data-aja-bqm-field-rate>`) — positive number
- [x] **"Assess"** (`<button data-aja-bqm-assess-submit>`) — POSTs
      `{ frames, frameRate }` to `/v1/admin/aja/basic-quality-metrics/assess`

### Route Map panel

- [x] **5 entries** (`<article>` per `path` + `purpose`) — non-interactive

### Quick-action lane

- [x] **"Open Aja Segmentation workspace"** → `/studio/aja/segmentation`
- [x] **"Back to Studio workspace index"** → `/studio`

## E2E coverage

- [`apps/oshun/web/e2e/studio-aja-quality-metrics-lane-consoles.spec.ts`](../../../../apps/oshun/web/e2e/studio-aja-quality-metrics-lane-consoles.spec.ts)
  covers signed-in shell render, route-map shape, exact quick-action hrefs, the
  ready six-dimension catalog, 44 px submit target, short-track client guard
  with no POST, real BFF zigzag assessment output (including exact 1800 m/s²
  peak acceleration), loading / unauthorized / malformed-catalog fail-closed
  states, mobile no-overflow, and direct BFF auth/schema/happy-path gates.

## Data & contracts

- **Reads**: `GET /v1/admin/aja/basic-quality-metrics` (dimension catalog) on
  mount, `cache: 'no-store'`, `buildBffAuthHeaders()`
- **Writes**: `POST /v1/admin/aja/basic-quality-metrics/assess`
- **Realtime**: none
- **Caching**: client fetch on mount (no-store); SSR shell
- **Auth/role check**: BFF endpoints admin-scoped, fail-closed (401/403 →
  unauthorized render); route gated signed-in + studio via the proxy

## Cross-references

- Parent: [`../../studio-overview.md`](../../studio-overview.md)
- Sibling routes: [`./studio-aja-segmentation.md`](./studio-aja-segmentation.md)
- Component sources:
  - `apps/oshun/web/src/components/studio/StudioAjaBasicQualityMetricsWorkspace.tsx`
  - `apps/oshun/web/src/components/studio/StudioAjaBasicQualityMetricsRouteMap.ts`

## Known downstream boundaries

- The lane assesses a single synthetic joint track (`TestJoint`); the six
  analyzers run, but multi-joint capture clips are not yet an input.
- Route-map sub-routes are descriptive contracts; implementation status of those
  child pages is tracked separately from this leaf console.