---
path: /studio/hathor/npc-behavior-trees
surface: studio
domain: hathor
auth: signed-in + studio entitlement
source: apps/oshun/web/src/app/studio/hathor/npc-behavior-trees/page.tsx
status: walked
last_walked:
  '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 Hathor · NPC Behavior Trees

## Purpose

Admin lane console for the real `@hathor/llm-npc` `BehaviorController` schedule
resolver. Against a daily schedule (weekday / weekend / special-day time blocks),
it resolves which activity is active at a given hour — matching time ranges with
overnight wraparound (a 22→6 block covers hour 23 and hour 3) and giving
special-day blocks precedence over the regular schedule. Admin-scoped and
fail-closed.

## Entry points

- **Quick-action link from `/studio/hathor/scenario-generation`** (this page
  links out to scenario-generation)
- **Direct URL / bookmark** — yes; `alternates.canonical` set
- **Studio overview** — see
  [`../../studio-overview.md`](../../studio-overview.md)

## Layout regions

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

- **Workspace** `<section data-hathor-npc-behavior-trees-workspace>`:
  - `<h1>` (WorkspaceHeading) "Hathor NPC Behavior Trees Workspace"
  - Summary `<p data-hathor-npc-behavior-trees-summary>`
  - **Seeded daily schedule** (`<h2>`) — read-only `data-hathor-nbt-schedule`
    list of `data-hathor-nbt-schedule-item` rows (weekday + weekend blocks)
  - The resolve form lane: `data-hathor-nbt-resolve-form`
- **Route Map panel** (`data-hathor-npc-behavior-trees-route-map`): `<h2>` "Route
  Map" + 5 entries from `STUDIO_HATHOR_NPC_BEHAVIOR_TREES_ROUTE_MAP`
- **Quick-action lane**: two `Link.quickAction` anchors — Scenario Generation,
  Back to Studio workspace index

## States

- [ ] **Loading** — `<p data-hathor-nbt-loading>`
- [ ] **Unauthorized** — `data-hathor-nbt-unauthorized` on 401/403 (admin Hathor
      scope required); fail-closed
- [ ] **Error** — `data-hathor-nbt-error` on non-OK GET / malformed catalog
- [ ] **Ready (form)** — seeded schedule + `data-hathor-nbt-resolve-form` once
      the catalog loads
- [ ] **Result** — `data-hathor-nbt-result` after a 200 resolve;
      `data-hathor-nbt-resolve-error` for invalid inputs / non-200

## Interactions

### Workspace body (resolve form lane)

- [ ] **Hour (0–24)** — `<input data-hathor-nbt-field-hour>` (aria-label "hour")
- [ ] **weekend** — `<input data-hathor-nbt-field-weekend type="checkbox">`
      (aria-label "is weekend")
- [ ] **Special day (optional)** — `<input data-hathor-nbt-field-special>`
      (aria-label "special day")
- [ ] **Resolve activity** —
      `<button data-hathor-nbt-resolve-submit type="submit">` → POST
      `/v1/admin/hathor/npc-behavior-trees/resolve`
- [ ] **Result** — `data-hathor-nbt-activity`, `data-hathor-nbt-scheduled`, and
      (when a block matches) `data-hathor-nbt-matched`

### Route Map panel

- [ ] **5 route entries** — verify match with
      `STUDIO_HATHOR_NPC_BEHAVIOR_TREES_ROUTE_MAP`

### Quick-action lane

- [ ] **"Open Hathor Scenario Generation workspace"** (→
      `/studio/hathor/scenario-generation`)
- [ ] **"Back to Studio workspace index"** (→ `/studio`)

## Data & contracts

- **Reads**: GET `/v1/admin/hathor/npc-behavior-trees` on mount
- **Writes**: POST `/v1/admin/hathor/npc-behavior-trees/resolve`
- **Realtime**: none
- **Caching**: client `fetch` on mount, `cache: 'no-store'`; `buildBffAuthHeaders`
- **Auth/role check**: admin-scoped fail-closed (401/403); behind the signed-in
  + studio proxy gate

## Cross-references

- Parent: [`../../studio-overview.md`](../../studio-overview.md)
- Shell:
  [`../../../shell/04-auth-session.md`](../../../shell/04-auth-session.md)
- Sibling routes:
  [`./studio-hathor-llm-npc.md`](./studio-hathor-llm-npc.md),
  [`./studio-hathor-scenario-generation.md`](./studio-hathor-scenario-generation.md)
- Component sources:
  - `apps/oshun/web/src/components/studio/StudioHathorNpcBehaviorTreesWorkspace.tsx`
  - `apps/oshun/web/src/components/studio/StudioHathorNpcBehaviorTreesRouteMap.ts`

## Open questions / known gaps

- [ ] Hathor is `unconfirmed-v1` per `WALKTHROUGH/matrix/routes.csv`. Confirm
      whether the dedicated `/studio/hathor/*` admin lane consoles ship in V1.
- [ ] The lane queries a single seeded schedule rather than letting the operator
      author or upload a tree; confirm whether schedule editing / behavior-tree
      authoring is planned for this route despite the name.
- [ ] Route Map advertises `trees/`, `templates/`, `agents/`, and `governance/`
      sub-routes with no `page.tsx` yet.