fix(hud): lead with the state tag, keep feedState in get_hud_caption

Review fixes for the HUD summary language change:

- The translated feed-state tag now leads the one-line summary and the
  fallback line, so the readout's ellipsis cannot hide it.
- get_hud_caption checks the reply's feedState, returns it and appends the
  state tag; a reply naming another state keeps only the place.
- The model gets the layer names the user sees (localizeLayerName).
- Japanese and Chinese summaries are capped at 20 characters; pt, zh-CN and
  zh-Hant get explicit language names.
- A partial view is narrated as incomplete coverage, not as not live.
- provenanceTag and hudSummaryMatchesProvenance move to layerSnapshot.js so
  the tools package can use them without browser globals.
- docs/CURRENT-STATE.md, changelog and comments updated; redundant tests
  trimmed.

changelog.d/1488-hud-summary-language.md

@@ -1,5 +1,3 @@
-- Write the AI HUD summary in the interface language. The model now returns
-  the feed state as its own field, and the HUD checks it against its own and
-  adds its translated state tag, so a stale or partial view is never shown as
-  live. A partial layer no longer reads as off or nominal in the HUD, voice
-  and analyst provenance (German, @gekh, #1488).
+- Write the AI HUD summary in the interface language, led by the HUD's own
+  translated feed-state warning. A partial layer no longer reads as off or
+  nominal in the HUD, voice and analyst answers (German, @gekh, #1488).

docs/CURRENT-STATE.md

@@ -5255,8 +5255,11 @@ and unreachable upstream (502/504) separately from road geometry.
 ### AI HUD Summary (June 2026)
 
 - HUD `SUMMARY` readout requests a five-word intelligence-style summary from `/api/openai/hud-summary` (model `OPENAI_HUD_SUMMARY_MODEL`, default `gpt-5-nano`, minimal reasoning).
-- Input is the live basemap label context (place/street/nearby-place labels + enabled layers) — the model is instructed not to infer from coordinates.
-- Output is sanitized to exactly five words; falls back to the deterministic telemetry summary on error/timeout (5s abort); typewriter animation on update.
+- Input is the live basemap label context (place/street/nearby-place labels + enabled layers, the layer names as the user sees them) and `feedProvenance`; the model is instructed not to infer from coordinates.
+- Language (October 2026): the HUD sends `locale`, which is part of the dedupe signature. The proxy keeps a shipped locale (English otherwise) and names the language in the instructions and at the start of the input; Japanese and Chinese get a 20-character phrase instead of five words.
+- The reply is structured (`text.format` JSON schema): `{summary, feedState}`, `feedState` being the snapshot state or `none`. For a view that is not nominal, a missing or different `feedState` falls back to the deterministic line. An accepted summary is shown after the HUD's own translated state tag (`STALE LIVE FLIGHTS | …`), which leads so the one-line readout never clips it.
+- Output is sanitized to five words (20 characters for Japanese and Chinese); falls back to the deterministic telemetry summary on error/timeout (5s abort); typewriter animation on update.
+- `partial` is a feed state of its own, ranked between `fallback` and `nominal`, so one partial layer no longer reads as off and partial plus nominal reads partial (HUD, voice view state, `analyst_query`, `brief`, the agent world packet). Its narration note says coverage is incomplete rather than not live.
 - A summary asked for before the camera starts moving never paints over the next view: `moveStart` marks the summary dirty and bumps its revision, as `moveEnd` does, aborts the request in flight and stops a reply still typing; neither a reply nor a fallback line (on an error, the 5 s timeout, the abort, or a failed context build) paints once the revision has moved. A dropped request forgets its signature and a timeout counts as a failure, so the next 15 s tick asks again even over the same place. An interrupted typewriter reply also forgets its signature; fully displayed answers remain reusable.
 
 ### Place-search providers

server/providers/openai/hud-summary.js

@@ -1,5 +1,6 @@
 import {
   HUD_SUMMARY_FEED_STATES,
+  HUD_SUMMARY_MAX_UNSPACED_CHARS,
   HUD_SUMMARY_RESPONSE_FORMAT,
   hudSummaryInput,
   hudSummaryInstructions,
@@ -21,7 +22,7 @@ function extractOpenAiResponseText(data) {
     .trim();
 }
 
-/** The structured reply, or nulls when the model did not follow the format. */
+/** Parse the summary and normalize the canonical feed state. */
 function parseHudSummaryReply(text) {
   let reply = null;
   try {
@@ -39,13 +40,22 @@ function parseHudSummaryReply(text) {
 }
 
 function toFiveWordHudSummary(value) {
-  return String(value || '')
+  const words = String(value || '')
     .replace(/[^\p{L}\p{N}\s-]/gu, ' ')
     .trim()
     .split(/\s+/)
     .filter(Boolean)
     .slice(0, 5)
     .join(' ');
+  // Japanese and Chinese have no spaces to count words by: cap characters.
+  if (!/[\p{Script=Han}\p{Script=Hiragana}\p{Script=Katakana}]/u.test(words))
+    return words;
+  const graphemes = new Intl.Segmenter(undefined, { granularity: 'grapheme' });
+  return [...graphemes.segment(words)]
+    .slice(0, HUD_SUMMARY_MAX_UNSPACED_CHARS)
+    .map(({ segment }) => segment)
+    .join('')
+    .trim();
 }
 
 async function handleHudSummary(req, res) {

src/data/layerSnapshot.js

@@ -208,6 +208,8 @@ export function feedProvenanceNote(layers = [], overall = null) {
     return `${s.name || s.id} is ${String(s.feedState).toUpperCase()}${extras ? ` (${extras})` : ''}`;
   });
   const body = bits.join('; ') || `${String(overall).toUpperCase()} feed`;
+  if (overall === 'partial')
+    return `${body}. Narrate that coverage is incomplete with any count; do not claim full coverage.`;
   return `${body}. Narrate that provenance with any count; do not describe this as live.`;
 }
 
@@ -254,3 +256,35 @@ export function viewStateLayerRow(layer, options) {
     lastUpdate: snap.lastUpdate,
   };
 }
+
+/**
+ * The feed state and up to two layer names of a provenance envelope that is
+ * not nominal, or null. Values stay English (`state` is a feed-state id,
+ * `names` are `layer.name`); the HUD translates them for display.
+ * @param {{ overall?: string|null, layers?: Array<object> }|null} envelope
+ * @returns {{ state: string, names: string[] }|null}
+ */
+export function provenanceTag(envelope) {
+  const overall = envelope?.overall;
+  if (!overall || overall === 'nominal' || overall === 'off') return null;
+  const names = (envelope.layers || [])
+    .filter(
+      (s) => s.feedState && s.feedState !== 'nominal' && s.feedState !== 'off',
+    )
+    .map((s) => String(s.name || s.id || 'LAYER'))
+    .slice(0, 2);
+  return { state: overall, names };
+}
+
+/**
+ * Require a matching feedState for warning states: a view that is not
+ * nominal falls back on a missing or different state.
+ * @param {{ feedState?: string|null }|null} response The proxy's reply.
+ * @param {{ overall?: string|null }|null} provenance The context's envelope.
+ * @returns {boolean}
+ */
+export function hudSummaryMatchesProvenance(response, provenance) {
+  const state = provenance?.overall;
+  if (!state || state === 'nominal' || state === 'off') return true;
+  return response?.feedState === state;
+}

src/data/layerSnapshot.test.mjs

@@ -132,6 +132,9 @@ test('partial is a feed-state of its own: above nominal, below every fault', ()
   assert.equal(overall([partial, stale]), 'stale');
   assert.equal(overall([stale, partial]), 'stale');
   assert.equal(LAYER_FEED_STATE_LABELS.partial, 'PARTIAL');
+  const note = feedProvenanceEnvelope([partial], { now: NOW }).note;
+  assert.match(note, /coverage is incomplete/);
+  assert.doesNotMatch(note, /do not describe this as live/);
   assert.equal(
     FEED_STATE_SEVERITY.fallback < FEED_STATE_SEVERITY.partial &&
       FEED_STATE_SEVERITY.partial < FEED_STATE_SEVERITY.nominal,

src/hud.js

@@ -782,7 +782,8 @@ export class IntelHUD {
         zone: localTag,
       },
     );
-    return provenance ? `${line} | ${provenance}` : line;
+    // The feed state leads: the one-line readout clips its end.
+    return provenance ? `${provenance} | ${line}` : line;
   }
 
   /** Stop a summary still typing out, leaving what it has typed so far. */
@@ -894,11 +895,12 @@ export class IntelHUD {
         throw new Error(data?.error || `HTTP ${response.status}`);
       }
       if (hudSummaryMatchesProvenance(data, context.feedProvenance)) {
-        // The warning is the HUD's own translated tag, not the model's words.
+        // The warning is the HUD's own translated tag, not the model's
+        // words, and it leads so the one-line readout never clips it.
         const tag = localizedProvenanceTag(
           provenanceTag(context.feedProvenance),
         );
-        this._lastSummaryText = tag ? `${data.summary} | ${tag}` : data.summary;
+        this._lastSummaryText = tag ? `${tag} | ${data.summary}` : data.summary;
       }
       this._setSummaryText(this._lastSummaryText || fallbackText, animate);
     } catch (error) {
@@ -959,18 +961,18 @@ export class IntelHUD {
     // A slower build for a view the camera has left must not replace the
     // newer view's lookup.
     if (revision === this._summaryRevision) this._placeLabels = labels;
-    const enabledLayers =
-      this._dataManager
-        ?.getAll?.()
-        ?.filter((layer) => layer.enabled)
-        .map((layer) => layer.name) || [];
+    const layerContext = hudSummaryLayerContext(
+      this._dataManager?.getAll?.() || [],
+    );
     return {
       locale: getLocale(),
       placeLabels: labels.placeLabels,
       streetLabels: labels.streetLabels,
       nearbyPlaceLabels: labels.nearbyPlaceLabels,
-      enabledLayerLabels: enabledLayers,
-      ...hudSummaryLayerContext(this._dataManager?.getAll?.() || []),
+      ...layerContext,
+      // The names the user sees; feedProvenance keeps the English ids.
+      enabledLayerLabels:
+        layerContext.enabledLayerLabels.map(localizeLayerName),
     };
   }
 

src/hudSummaryResponse.js

@@ -2,9 +2,15 @@ import {
   SNAPSHOT_FEED_STATES,
   feedProvenanceEnvelope,
   layerSnapshots,
+  provenanceTag,
 } from './data/layerSnapshot.js';
 import { DEFAULT_LOCALE, normalizeLocale } from './i18n/locale.js';
 
+export {
+  hudSummaryMatchesProvenance,
+  provenanceTag,
+} from './data/layerSnapshot.js';
+
 export const HUD_SUMMARY_UNCONFIGURED_CODE = 'OPENAI_NOT_CONFIGURED';
 
 /**
@@ -54,11 +60,14 @@ export const HUD_SUMMARY_INSTRUCTIONS = [
   'Use only the supplied place, street, nearby-place, enabled-layer labels, and feedProvenance.',
   'Prefer the clearest named place and include a relevant enabled layer only when useful.',
   'Set feedState to feedProvenance.overall exactly as given, or none when it is null.',
-  'If feedProvenance.overall is not nominal, the summary must not present the view as live or healthy.',
+  'If feedProvenance.overall is partial, do not present the coverage as complete; if it is any other state but nominal, do not present the view as live or healthy.',
   'Do not infer from coordinates or invent a place or feed state.',
   'The summary is exactly five words with no title, punctuation, markdown, or introductory phrase.',
 ].join(' ');
 
+/** Longest summary, in characters, for a script written without spaces. */
+export const HUD_SUMMARY_MAX_UNSPACED_CHARS = 20;
+
 /** feedState values the model may return; none stands for a null overall. */
 export const HUD_SUMMARY_FEED_STATES = Object.freeze([
   ...SNAPSHOT_FEED_STATES,
@@ -87,7 +96,19 @@ export function hudSummaryLocale(value) {
 }
 
 /** The language a request's summary is written in, named in English. */
+// Names Intl.DisplayNames gets wrong for the shipped catalogs: pt is the
+// Brazilian variant, and zh-Hant is the zh-CN wording in Traditional script.
+const SUMMARY_LANGUAGES = Object.freeze({
+  pt: 'Brazilian Portuguese',
+  'zh-CN': 'Simplified Chinese',
+  'zh-Hant': 'Chinese in Traditional characters (mainland wording)',
+});
+
+/** Scripts written without spaces, where five words do not apply. */
+const UNSPACED_LOCALES = /^(?:ja|zh)(?:-|$)/;
+
 function summaryLanguage(tag) {
+  if (SUMMARY_LANGUAGES[tag]) return SUMMARY_LANGUAGES[tag];
   try {
     return new Intl.DisplayNames(['en'], { type: 'language' }).of(tag) || tag;
   } catch {
@@ -96,8 +117,7 @@ function summaryLanguage(tag) {
 }
 
 /**
- * The instructions for one request: English as before, otherwise one more
- * sentence naming the language the five words are written in.
+ * Build the summary instructions for the requested locale.
  * @param {unknown} locale The `locale` the HUD sent.
  * @returns {string}
  */
@@ -105,7 +125,10 @@ export function hudSummaryInstructions(locale) {
   const tag = hudSummaryLocale(locale);
   if (tag === DEFAULT_LOCALE) return HUD_SUMMARY_INSTRUCTIONS;
   const language = summaryLanguage(tag);
-  return `${HUD_SUMMARY_INSTRUCTIONS} Write the summary in ${language} (${tag}), not English, giving places and layers their usual ${language} names; feedState stays the English value.`;
+  const length = UNSPACED_LOCALES.test(tag)
+    ? ` Instead of five words, write one phrase of at most ${HUD_SUMMARY_MAX_UNSPACED_CHARS} characters.`
+    : '';
+  return `${HUD_SUMMARY_INSTRUCTIONS} Write the summary in ${language} (${tag}), not English, giving places their usual ${language} names and layers the names in enabledLayerLabels; feedState stays the English value.${length}`;
 }
 
 /**
@@ -148,25 +171,6 @@ export function hudSummaryLayerContext(layers = [], options) {
   };
 }
 
-/**
- * The feed state and up to two layer names of a provenance envelope that is
- * not nominal, or null. Values stay English (`state` is a feed-state id,
- * `names` are `layer.name`); the HUD translates them for display.
- * @param {{ overall?: string|null, layers?: Array<object> }|null} envelope
- * @returns {{ state: string, names: string[] }|null}
- */
-export function provenanceTag(envelope) {
-  const overall = envelope?.overall;
-  if (!overall || overall === 'nominal' || overall === 'off') return null;
-  const names = (envelope.layers || [])
-    .filter(
-      (s) => s.feedState && s.feedState !== 'nominal' && s.feedState !== 'off',
-    )
-    .map((s) => String(s.name || s.id || 'LAYER'))
-    .slice(0, 2);
-  return { state: overall, names };
-}
-
 /**
  * The feed-state tag for the HUD telemetry suffix when an enabled feed is not
  * nominal.
@@ -178,16 +182,3 @@ export function hudTelemetryProvenance(layers = [], options) {
   const snapshots = layerSnapshots(layers, options).filter((s) => s.enabled);
   return provenanceTag(feedProvenanceEnvelope(snapshots, options));
 }
-
-/**
- * Show an AI summary only when its canonical feedState is the HUD's own: a
- * view that is not nominal falls back on a missing or different state.
- * @param {{ feedState?: string|null }|null} response The proxy's reply.
- * @param {{ overall?: string|null }|null} provenance The context's envelope.
- * @returns {boolean}
- */
-export function hudSummaryMatchesProvenance(response, provenance) {
-  const state = provenance?.overall;
-  if (!state || state === 'nominal' || state === 'off') return true;
-  return response?.feedState === state;
-}

src/hudSummaryResponse.test.mjs

@@ -5,6 +5,7 @@ import { Readable } from 'node:stream';
 import {
   HUD_SUMMARY_FEED_STATES,
   HUD_SUMMARY_INSTRUCTIONS,
+  HUD_SUMMARY_MAX_UNSPACED_CHARS,
   HUD_SUMMARY_RESPONSE_FORMAT,
   HUD_SUMMARY_UNCONFIGURED_CODE,
   hudSummaryInput,
@@ -163,9 +164,6 @@ test('the installed keyless HUD route stays successful after the voice quota is
   } finally {
     if (previousKey === undefined) delete process.env.OPENAI_API_KEY;
     else process.env.OPENAI_API_KEY = previousKey;
-    if (previousLimit === undefined)
-      delete process.env.GEV_RATELIMIT_OPENAI_PER_MIN;
-    else process.env.GEV_RATELIMIT_OPENAI_PER_MIN = previousLimit;
   }
 });
 
@@ -219,7 +217,14 @@ test('HUD summary instructions ask for the canonical feedState as its own field'
     HUD_SUMMARY_INSTRUCTIONS,
     /Set feedState to feedProvenance\.overall exactly/,
   );
-  assert.match(HUD_SUMMARY_INSTRUCTIONS, /must not present the view as live/);
+  assert.match(
+    HUD_SUMMARY_INSTRUCTIONS,
+    /do not present the view as live or healthy/,
+  );
+  assert.match(
+    HUD_SUMMARY_INSTRUCTIONS,
+    /partial, do not present the coverage as complete/,
+  );
   assert.deepEqual(HUD_SUMMARY_RESPONSE_FORMAT.schema.required, [
     'summary',
     'feedState',
@@ -251,6 +256,32 @@ test('the HUD sends its UI locale inside the context it signs for dedupe', () =>
   const hud = readFileSync(new URL('./hud.js', import.meta.url), 'utf8');
   assert.match(hud, /locale: getLocale\(\),\s+placeLabels:/);
   assert.match(hud, /const signature = JSON\.stringify\(context\);/);
+  // The model gets the layer names the user sees.
+  assert.match(
+    hud,
+    /enabledLayerLabels:\s+layerContext\.enabledLayerLabels\.map\(localizeLayerName\)/,
+  );
+});
+
+test('the state tag leads the one-line summary so clipping cannot hide it', () => {
+  const hud = readFileSync(new URL('./hud.js', import.meta.url), 'utf8');
+  assert.match(hud, /tag \? `\$\{tag\} \| \$\{data\.summary\}`/);
+  assert.match(hud, /provenance \? `\$\{provenance\} \| \$\{line\}`/);
+});
+
+test('shipped catalogs get their exact language, and CJK a character limit', () => {
+  assert.match(hudSummaryInstructions('pt'), /in Brazilian Portuguese \(pt\)/);
+  assert.match(
+    hudSummaryInstructions('zh-Hant'),
+    /in Chinese in Traditional characters \(mainland wording\) \(zh-Hant\)/,
+  );
+  assert.match(hudSummaryInstructions('zh-CN'), /in Simplified Chinese/);
+  assert.match(
+    hudSummaryInstructions('ja'),
+    new RegExp(`at most ${HUD_SUMMARY_MAX_UNSPACED_CHARS} characters`),
+  );
+  assert.doesNotMatch(hudSummaryInstructions('es'), /at most/);
+  assert.match(hudSummaryInstructions('es'), /names in enabledLayerLabels/);
 });
 
 let hudSummaryClient = 0;
@@ -259,10 +290,8 @@ async function postHudSummary(context, reply) {
   // A fresh address per request: the per-IP limiter outlives a single test.
   hudSummaryClient += 1;
   const previousKey = process.env.OPENAI_API_KEY;
-  const previousLimit = process.env.GEV_RATELIMIT_OPENAI_PER_MIN;
   const previousFetch = globalThis.fetch;
   process.env.OPENAI_API_KEY = 'test-key';
-  process.env.GEV_RATELIMIT_OPENAI_PER_MIN = '0';
   let sent = null;
   globalThis.fetch = async (url, init) => {
     sent = JSON.parse(init.body);
@@ -301,9 +330,6 @@ async function postHudSummary(context, reply) {
     globalThis.fetch = previousFetch;
     if (previousKey === undefined) delete process.env.OPENAI_API_KEY;
     else process.env.OPENAI_API_KEY = previousKey;
-    if (previousLimit === undefined)
-      delete process.env.GEV_RATELIMIT_OPENAI_PER_MIN;
-    else process.env.GEV_RATELIMIT_OPENAI_PER_MIN = previousLimit;
   }
 }
 
@@ -332,6 +358,18 @@ test('an es request reaches the model in Spanish and returns the canonical state
   });
 });
 
+test('a Japanese summary is capped in characters, not words', async () => {
+  const long = 'テキサス州議会議事堂周辺の航空機データは古くなっています';
+  const { response } = await postHudSummary(
+    { locale: 'ja', feedProvenance: { overall: 'stale' } },
+    JSON.stringify({ summary: long, feedState: 'stale' }),
+  );
+  assert.equal(
+    response.body.summary,
+    [...long].slice(0, HUD_SUMMARY_MAX_UNSPACED_CHARS).join(''),
+  );
+});
+
 test('a reply that skips the format carries no summary and no state', async () => {
   const { response } = await postHudSummary(
     { locale: 'ru', feedProvenance: { overall: 'stale' } },
@@ -346,17 +384,6 @@ test('a reply that skips the format carries no summary and no state', async () =
   assert.equal(unknown.response.body.feedState, null);
 });
 
-test('the HUD proxy builds its instructions from the shared contract', () => {
-  const local = readFileSync(
-    new URL('../server/providers/openai/hud-summary.js', import.meta.url),
-    'utf8',
-  );
-  assert.match(local, /hudSummaryInstructions\(context\?\.locale\)/);
-  assert.match(local, /hudSummaryInput\(context\)/);
-  assert.match(local, /HUD_SUMMARY_RESPONSE_FORMAT/);
-  assert.doesNotMatch(local, /enabled-layer text labels/);
-});
-
 test("a localized summary is shown only with the HUD's own canonical state", () => {
   const stale = { overall: 'stale' };
   assert.equal(

src/tools/queries/brief.js

@@ -1,7 +1,11 @@
 /** Composite queries that combine other tools' answers for one area. */
 
 import { suggestView } from '../views.js';
-import { feedProvenanceEnvelope } from '../../data/layerSnapshot.js';
+import {
+  feedProvenanceEnvelope,
+  hudSummaryMatchesProvenance,
+  provenanceTag,
+} from '../../data/layerSnapshot.js';
 import { defineTool, ToolError } from '../catalog.js';
 import {
   AREA_SCHEMA,
@@ -232,6 +236,7 @@ export const getHudCaption = defineTool({
         feedState: sectionFeedState(brief[key]),
       }),
     );
+    const feedProvenance = feedProvenanceEnvelope(layers);
     const response = await context.services.summary.summarize(
       {
         placeLabels: [area.label],
@@ -244,16 +249,29 @@ export const getHudCaption = defineTool({
           name,
           feedState,
         })),
-        feedProvenance: feedProvenanceEnvelope(layers),
+        feedProvenance,
       },
       { signal: context.signal },
     );
-    const caption = response?.data?.summary;
-    if (!response?.ok || typeof caption !== 'string' || !caption)
+    const words = response?.data?.summary;
+    if (!response?.ok || typeof words !== 'string' || !words)
       throw new ToolError('unavailable', 'The caption service did not answer');
+    // As on the HUD: the warning is the app's own state tag, and a reply that
+    // names another state than the app's keeps only the place.
+    const tag = provenanceTag(feedProvenance);
+    const text = hudSummaryMatchesProvenance(response.data, feedProvenance)
+      ? words
+      : area.label;
+    const caption = tag
+      ? `${text} | ${[tag.state, ...tag.names].join(' ').toUpperCase()}`
+      : text;
     return {
       summary: caption,
-      data: { area: area.label, caption },
+      data: {
+        area: area.label,
+        caption,
+        feedState: feedProvenance.overall,
+      },
     };
   },
 });

src/tools/queries/hud-caption-feed-state.test.mjs

@@ -0,0 +1,66 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { composeCatalog, coreTools } from '../index.js';
+
+// The proxy returns the feed state as its own field ({ summary, feedState });
+// the five words no longer carry STALE, so get_hud_caption adds the app's own
+// state tag and keeps only the place when the reply names another state.
+async function staleCaption(reply) {
+  const conditions = {
+    observedAt: '2026-10-01T19:15:00.000Z',
+    temperatureC: 26.3,
+    apparentTemperatureC: 32,
+    precipitationMm: 0,
+    cloudCoverPct: 100,
+    windKph: 5.4,
+    windDirectionDeg: 318,
+    visibilityM: 15400,
+    weatherCode: 3,
+  };
+  const places = {
+    resolve: async (name) =>
+      name === 'Austin'
+        ? {
+            name: 'Austin, Texas',
+            bounds: { west: -97.94, south: 30.1, east: -97.56, north: 30.52 },
+          }
+        : null,
+  };
+  const staleWeather = {
+    getConditions: async () => ({ status: 'stale', weather: conditions }),
+  };
+  let sent = null;
+  const summary = {
+    async summarize(context) {
+      sent = context;
+      return { ok: true, status: 200, data: { error: null, ...reply } };
+    },
+  };
+  const catalog = composeCatalog({
+    tools: coreTools,
+    services: { weather: staleWeather, summary, places },
+  });
+  const result = await catalog.call('get_hud_caption', {
+    area: { place: 'Austin' },
+  });
+  assert.equal(sent.feedProvenance.overall, 'stale');
+  return result.data;
+}
+
+test('get_hud_caption keeps the canonical feed state of a stale view', async () => {
+  const data = await staleCaption({
+    summary: 'Austin weather across the area',
+    feedState: 'stale',
+  });
+  assert.equal(data.feedState, 'stale');
+  assert.equal(data.caption, 'Austin weather across the area | STALE WEATHER');
+});
+
+test('get_hud_caption drops words whose feed state is not the app one', async () => {
+  const data = await staleCaption({
+    summary: 'Austin live weather looks fine',
+    feedState: 'nominal',
+  });
+  assert.equal(data.feedState, 'stale');
+  assert.equal(data.caption, 'Austin, Texas | STALE WEATHER');
+});