Merge branch 'main' into upstream/voice-alias-hint-budget

changelog.d/1470-ukrainian.md

@@ -0,0 +1,3 @@
+- Add Ukrainian (uk) to the language picker: the whole interface in Ukrainian,
+  with its four plural forms and Cyrillic HUD units. Based on the Ukrainian
+  translation by @meirm (#312) (German, @gekh, #1470).

changelog.d/871-vessels-idle-render.md

@@ -0,0 +1,7 @@
+- Let the scene idle with AIS vessels enabled. Vessels no longer hold the
+  continuous render loop; they request frames for new data and selection, one
+  trailing frame after the camera stops, and hold the loop only while focus
+  emphasis animates or a vessel stays dimmed under a tracked target. A parked
+  vessels-only scene went from continuous rendering to 0 frames in 5 s. While
+  anything is tracked, the vessel focus pass skips hidden sprites at rest:
+  about 4 ms to 1.2 ms per pass over 12,000 vessels (waar19, #871).

docs/CURRENT-STATE.md

@@ -2286,6 +2286,16 @@ fetching, trailing-24-hour filtering and partial-success caching are unchanged.
 > SCOPE toggle + FEATHER slider, hash keys `sc`/`scf`) — it is NOT the
 > six zero-intensity style stages anymore (those are disabled; see the
 > history note in `_initStages`). Hidden tabs stop the render loop.
+> AIS vessels no longer hold the loop while enabled (2026-09-30): vessels move
+> only when a poll lands, so the layer requests a frame for every forced pass
+> (new data, selection), leaves one trailing frame when the camera moved inside
+> the 800 ms visibility cadence, and holds `ais-vessels` only while focus
+> emphasis animates or any vessel stays dimmed under a live focus target. The
+> trailing frame goes through the layer's injectable runtime clock and is
+> cancelled on disable, destroy and reset (`renderGovernor.test.mjs` pins the
+> no-self-wake invariant). The 80 ms focus pass also skips hidden sprites whose
+> focus state is at rest (`spriteFocusAtRest`), since advancing them changes
+> nothing; with a 12k worldwide feed that is most of the fleet.
 > The scope's OUTSIDE terminus is **altitude-adaptive** (2026-08-17): 0.94
 > at/above **10 Mm**, so
 > faint stars survive in the corners of a TRUE full-globe view, fading quickly
@@ -3772,7 +3782,7 @@ test:track` 43 tracking invariants · headless QA harnesses under
 
 ### Interface localization (October 2026)
 
-Shipped locales: **en** (source and fallback), **es**, **ru**, **zh-CN** and **zh-Hant**. The code lives in
+Shipped locales: **en** (source and fallback), **es**, **ru**, **uk**, **zh-CN** and **zh-Hant**. The code lives in
 `src/i18n/`. How to mark UI text: [`docs/I18N.md`](./I18N.md); translator workflow:
 [`docs/TRANSLATORS.md`](./TRANSLATORS.md).
 

docs/TRANSLATORS.md

@@ -1,6 +1,6 @@
 # Translating God's Eye View
 
-Shipped languages: **English** (source and fallback), **Spanish** (`es`), **Russian** (`ru`), **Simplified Chinese** (`zh-CN`) and **Traditional Chinese** (`zh-Hant`).
+Shipped languages: **English** (source and fallback), **Spanish** (`es`), **Russian** (`ru`), **Ukrainian** (`uk`), **Simplified Chinese** (`zh-CN`) and **Traditional Chinese** (`zh-Hant`).
 
 ## How it works
 
@@ -63,4 +63,4 @@ These are contracts, not copy: layer ids and registry keys, status enums and oth
 
 ## Language notes
 
-Each language keeps its glossary, plural forms, units and style in its own file, `docs/translations/<code>.md`: [Spanish](./translations/es.md), [Russian](./translations/ru.md), [Simplified Chinese](./translations/zh-CN.md), [Traditional Chinese](./translations/zh-Hant.md). Read it before translating, and add a term there when you settle on one.
+Each language keeps its glossary, plural forms, units and style in its own file, `docs/translations/<code>.md`: [Spanish](./translations/es.md), [Russian](./translations/ru.md), [Ukrainian](./translations/uk.md), [Simplified Chinese](./translations/zh-CN.md), [Traditional Chinese](./translations/zh-Hant.md). Read it before translating, and add a term there when you settle on one.

docs/translations/uk.md

@@ -0,0 +1,106 @@
+# Ukrainian (`uk`)
+
+Catalog: `src/i18n/locales/uk.json`. General rules: [TRANSLATORS.md](../TRANSLATORS.md).
+
+Translation source: meirm (#312).
+
+## Style
+
+- Address the user with polite imperatives: «Натисніть», «Увімкніть», «Спробуйте ще раз».
+- Sentence case, not Title Case: "Live Flights" → «Рейси онлайн».
+- Ukrainian norms, not Russian calques: «у радіусі», «за посиланням», «надто довгий», «потім», «вигляд» (a camera view: «вигляд згори»), «стеження» (tracking); prepositions alternate у/в and і/й by euphony.
+- The apostrophe is always ʼ (U+02BC): обʼєкт, звʼязок, памʼять. Not ' or ’.
+- Quotes inside Ukrainian text are «ялинки»; a button or layer name inside a sentence goes in them: Увімкніть «Вуличні знімки».
+- In short labels, a standard abbreviation with a period beats a wrapped line: ПОПЕР., ДАЛЬН., КАЛІБР.
+- Units: км, м, км/год, м/с, вуз (knots), фт (feet), год, хв, с, МГц, дБ, гПа; in UPPERCASE text КМ, М, КМ/С, ВУЗ, ФТ. MW is МВт in any case. `°` and `%` stay. Decimal comma in coordinates written as text: 28,2710° пн. ш.
+- Coordinates: пн. ш. / пд. ш. / сх. д. / зх. д.; the HUD hemisphere letters are Пн, Пд, Сх, Зх.
+
+## Plurals
+
+A `tn()` entry needs four forms. `Intl.PluralRules('uk')` picks:
+
+| Form    | Counts                   | Example    |
+| ------- | ------------------------ | ---------- |
+| `one`   | 1, 21, 31, 101…          | 1 камера   |
+| `few`   | 2–4, 22–24, 32–34…       | 3 камери   |
+| `many`  | 0, 5–20, 25–30, 111–114… | 5 камер    |
+| `other` | fractions: 1.5, 2.25…    | 1,5 камери |
+
+`other` takes the genitive singular: 1,5 кадру, 1,5 літака, 1,5 ключа. When a word next to a number cannot agree in every form, move the number after a colon instead: «поруч: {count}», «відповідей: {responses}». The same trick keeps place names and tool names out of a preposition's case: «звідки: {origin}», «Активно: {name}».
+
+## Glossary
+
+| English                                         | Українська                                                       |
+| ----------------------------------------------- | ---------------------------------------------------------------- |
+| layer / data layer                              | шар / шар даних                                                  |
+| feed                                            | потік даних (short: потік)                                       |
+| source / data source                            | джерело / джерело даних                                          |
+| LIVE (status) / live data                       | ОНЛАЙН / у реальному часі (status chip: ДАНІ ОНЛАЙН)             |
+| SIMULATED / SYNTHETIC                           | ІМІТАЦІЯ                                                         |
+| stale / degraded / unavailable                  | застарів / з перебоями (chip: ПЕРЕБОЇ) / недоступний             |
+| retry                                           | повтор                                                           |
+| key (API key) / POWER UP                        | ключ / ЗАПУСК                                                    |
+| Provider Settings / provider                    | Налаштування постачальників / постачальник                       |
+| globe / map / map source / basemap              | глобус / карта / джерело карти / підкладка                       |
+| aircraft / flight / military flights            | літак (short HUD: борт) / рейс / військові рейси                 |
+| vessel, ship / vessels                          | судно / судна (gen. pl. суден)                                   |
+| satellite                                       | супутник                                                         |
+| launch (rocket) / space mission                 | запуск / космічна місія                                          |
+| ascent (rocket) / booster FLIGHT {n}            | виведення / ПОЛІТ {n} (not рейс)                                 |
+| contact / tracking                              | контакт / стеження                                               |
+| installation, site / mapped                     | обʼєкт / нанесений (обʼєкт, контакт)                             |
+| camera / CCTV camera                            | камера / камера CCTV                                             |
+| earthquake / active fire / fire perimeter       | землетрус / активна пожежа / контур пожежі                       |
+| advisory (NHC/CPHC cyclone)                     | зведення                                                         |
+| scene / shot / scene recipe                     | сцена / кадр / рецепт сцени                                      |
+| briefing / panel / dock                         | брифінг / панель / док                                           |
+| preset / visual preset                          | пресет / візуальний пресет                                       |
+| Scope, keyhole (circular viewport mask)         | приціл                                                           |
+| overlay (detection overlay) / world overlay     | накладка / накладка на глобусі                                   |
+| heading / altitude / ground speed               | курс / висота / шляхова швидкість                                |
+| map bearing, map heading                        | азимут карти                                                     |
+| HDG / BRG / CRS, TRK / FOV / DEST / SPD / RANGE | КУРС / ПЕЛ. / ШК (шляховий кут) / ОГЛЯД / ПРИЗН. / ШВИД / ДАЛЬН. |
+| Street View (Google)                            | Перегляд вулиць (as in Ukrainian Google Maps)                    |
+| Street Level (layer)                            | Вуличні знімки                                                   |
+| imagery / recent imagery                        | знімки / свіжі знімки                                            |
+| radar reflectivity / lightning density          | радіолокаційна відбивність / щільність блискавок                 |
+| infrared                                        | інфрачервоний (short: ІЧ)                                        |
+| receiver / gain / decoder                       | приймач / підсилення / декодер                                   |
+| broadcaster                                     | мовник                                                           |
+| CONUS, WHOT/BHOT, Ironbow, CRT, NVG, FLIR       | без перекладу                                                    |
+| PREV / NEXT (HUD) / Previous / Next             | ПОПЕР. / ДАЛІ / Попередній / Наступний                           |
+| anchor / data pack / bundle (scene)             | якір / пакет даних / архів                                       |
+| box (Recent Imagery area)                       | область                                                          |
+| camera move                                     | переліт                                                          |
+| SIG / NEWS / LOCAL (briefing tabs)              | СИГН. / НОВИНИ / МІСЦ.                                           |
+| compass points (N, NNE, NE, …)                  | Пн, ПнПнСх, ПнСх, …                                              |
+| L / R (relative bearing)                        | Л / П                                                            |
+| click / tap                                     | клацнути / натиснути                                             |
+| session (voice, OAuth)                          | сеанс                                                            |
+| sequence (street-level photos)                  | послідовність                                                    |
+| search (place search)                           | пошук місця                                                      |
+| pitch (CCTV camera pose)                        | нахил                                                            |
+| traffic (road traffic layer)                    | дорожній рух                                                     |
+| phosphor (CRT)                                  | люмінофор                                                        |
+| view (map extent) / view centre / in view       | видима область (карти) / центр карти / у кадрі                   |
+| select (verb) / selected                        | вибрати / вибраний (not обрати)                                  |
+| ping (cockpit proximity contacts)               | контакт                                                          |
+| merge (turn-by-turn) / on ramp                  | влитися в потік / вʼїзд (off ramp: зʼїзд)                        |
+| watch (Earth/Orbital Watch)                     | спостереження                                                    |
+| timeout                                         | тайм-аут                                                         |
+| icon                                            | значок (not іконка)                                              |
+| run (scene playback) / RUN LOG                  | відтворення / ЖУРНАЛ ВІДТВОРЕННЯ (запуск is a rocket launch)     |
+| Preview (voice panel replies)                   | відповіді                                                        |
+| Marine (radio tag) / pleasure craft             | море (not флот) / прогулянкове судно                             |
+| emergency (ADS-B) / Emergency (radio tag)       | аварійний стан / надзвичайні ситуації                            |
+| confidence (FIRMS fire detection)               | достовірність (short: достов.)                                   |
+| thermal (FLIR-style imaging)                    | тепловий (not термальний)                                        |
+| map stack                                       | набір карт                                                       |
+| stage (rocket) re-entry / recovery              | вхід ступеня в атмосферу / повернення                            |
+| ON / OFF (toggle chips)                         | УВІМК. / ВИМК.                                                   |
+| Clean UI / EXIT CLEAN VIEW                      | чистий інтерфейс / ПОВЕРНУТИ ІНТЕРФЕЙС                           |
+| full globe view                                 | вигляд всього глобуса                                            |
+| inputs (cockpit context chip)                   | потоки (not вхідні дані)                                         |
+| downrange (rocket stage)                        | дальність                                                        |
+| resolution (spatial)                            | роздільна здатність (not роздільність)                           |
+| shared follow expired                           | посилання на стеження застаріло                                  |

scripts/package-boundaries.json

@@ -441,6 +441,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -481,6 +482,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -511,6 +513,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js",
@@ -533,6 +536,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -550,6 +554,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -570,6 +575,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js",
@@ -597,6 +603,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/layerNames.js"
@@ -632,6 +639,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js"
@@ -649,6 +657,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js"
@@ -808,6 +817,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js",
@@ -930,6 +940,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js"
@@ -998,6 +1009,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js"
@@ -1047,6 +1059,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1110,6 +1123,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1140,6 +1154,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js",
@@ -1171,6 +1186,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1202,6 +1218,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js"
@@ -1236,6 +1253,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1279,6 +1297,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/layers/installations/classLabel.js"
@@ -1316,6 +1335,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js"
@@ -1367,6 +1387,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1397,6 +1418,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1446,6 +1468,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1510,6 +1533,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/layers/streetLevel/providers/mapillary/policy.js"
@@ -1540,6 +1564,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1581,6 +1606,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1604,6 +1630,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1661,6 +1688,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -1724,6 +1752,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/statusText.js",
@@ -2608,6 +2637,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js",
@@ -3193,6 +3223,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js",
@@ -3304,6 +3335,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/i18n/index.js"
@@ -3328,6 +3360,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -3365,6 +3398,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/scopeMaskPolicy.js",
@@ -3392,6 +3426,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -3484,6 +3519,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/unitLabels.js"
@@ -3540,6 +3576,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/statusText.js",
@@ -3795,6 +3832,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -3839,6 +3877,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -3893,6 +3932,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json"
     ],
@@ -3910,6 +3950,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/statusText.js",
@@ -3970,6 +4011,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/data/geoImportImages.js",
@@ -4167,6 +4209,7 @@
       "src/i18n/locale.js",
       "src/i18n/locales/es.json",
       "src/i18n/locales/ru.json",
+      "src/i18n/locales/uk.json",
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/ui/statusText.js",

src/data/aisLiveVessels.test.mjs

@@ -1719,3 +1719,50 @@ test('vessel selection passes the opaque source reference to optional history',
     aisLiveVesselsLayer.setSource(createVesselSource());
   }
 });
+
+test('vessel focus wire skips hidden sprites at rest while a target is tracked', () => {
+  const makeColor = (alpha) => ({ alpha, withAlpha: (next) => makeColor(next) });
+  const sprite = (show) => ({
+    position: { x: 1, y: 2, z: 3 },
+    show,
+    color: makeColor(1),
+  });
+  const visible = sprite(true);
+  const hidden = Array.from({ length: 50 }, () => sprite(false));
+  const records = [visible, ...hidden].map((billboard) => ({
+    position: billboard.position,
+    billboard,
+  }));
+  const target = {
+    screenRect: { left: 40, top: 40, right: 60, bottom: 60 },
+    paddingPx: 0,
+    cameraDistance: 1000,
+  };
+  let projected = 0;
+  let measured = 0;
+  const apply = (nowMs) =>
+    applyVesselFocusDeemphasis({
+      records,
+      target,
+      nowMs,
+      screenPositionFor: () => {
+        projected += 1;
+        return { x: 50, y: 50 };
+      },
+      cameraDistanceFor: () => {
+        measured += 1;
+        return 1200;
+      },
+      params: { paddingPx: 0, dimFloor: 0.25, attackMs: 300 },
+    });
+
+  apply(0);
+  const result = apply(300);
+
+  // Only the on-screen sprite pays for projection and distance.
+  assert.equal(projected, 2);
+  assert.equal(measured, 2);
+  assert.equal(visible.color.alpha, 0.25);
+  assert.equal(result.activeCount, 1);
+  for (const billboard of hidden) assert.equal(billboard.color.alpha, 1);
+});

src/data/focusDeemphasis.js

@@ -555,6 +555,21 @@ export function advanceFocusEvidenceNowMs(deltaMs) {
   return _focusEvidenceNowMs;
 }
 
+/**
+ * True when a sprite holds no dimming state, or has settled at full emphasis
+ * with nothing pending. Advancing such a sprite without a screen position (a
+ * hidden sprite) changes neither its state nor its alpha, so a layer pass may
+ * skip it.
+ * @param {object} sprite
+ * @returns {boolean}
+ */
+export function spriteFocusAtRest(sprite) {
+  const state = _spriteStates.get(sprite);
+  return (
+    !state || (state.factor === 1 && state.desired === 1 && !state.wasFarther)
+  );
+}
+
 /** Forget state when a primitive is removed from its owning collection. */
 export function forgetSpriteFocus(sprite) {
   if (sprite) _spriteStates.delete(sprite);

src/i18n/i18n.test.mjs

@@ -33,6 +33,8 @@ function memoryStorage(initial = {}) {
 test('normalizeLocale folds regional variants and rejects unshipped tags', () => {
   assert.equal(normalizeLocale('ru-RU'), 'ru');
   assert.equal(normalizeLocale(' RU '), 'ru');
+  assert.equal(normalizeLocale('uk'), 'uk');
+  assert.equal(normalizeLocale('uk-UA'), 'uk');
   assert.equal(normalizeLocale('en_GB'), 'en');
   assert.equal(normalizeLocale('xx'), null);
   // Explicit script tags take precedence over regional defaults.
@@ -142,6 +144,22 @@ test('tn() picks English and Russian plural forms', () => {
   assert.match(label(21), / 21 КЛЮЧ(?![А-ЯЁ])/);
 });
 
+test('tn() picks the four Ukrainian plural forms', () => {
+  const label = (count) =>
+    tn(
+      count,
+      'POWER UP · {count} KEY WAITING',
+      'POWER UP · {count} KEYS WAITING',
+    );
+  setLocale('uk');
+  assert.match(label(1), / 1 КЛЮЧ(?![А-ЯҐЄІЇ])/);
+  assert.match(label(3), / 3 КЛЮЧІ(?![А-ЯҐЄІЇ])/);
+  assert.match(label(5), / 5 КЛЮЧІВ(?![А-ЯҐЄІЇ])/);
+  assert.match(label(11), / 11 КЛЮЧІВ(?![А-ЯҐЄІЇ])/);
+  assert.match(label(21), / 21 КЛЮЧ(?![А-ЯҐЄІЇ])/);
+  assert.match(label(1.5), / 1\.5 КЛЮЧА(?![А-ЯҐЄІЇ])/);
+});
+
 test('t() context separates identical English with different meanings', () => {
   assert.equal(t('CLEAR', { context: 'action' }), 'CLEAR');
   setLocale('ru');

src/i18n/index.js

@@ -18,10 +18,17 @@ import {
 } from './locale.js';
 import es from './locales/es.json' with { type: 'json' };
 import ru from './locales/ru.json' with { type: 'json' };
+import uk from './locales/uk.json' with { type: 'json' };
 import zhCN from './locales/zh-CN.json' with { type: 'json' };
 import zhHant from './locales/zh-Hant.json' with { type: 'json' };
 
-const CATALOGS = Object.freeze({ es, ru, 'zh-CN': zhCN, 'zh-Hant': zhHant });
+const CATALOGS = Object.freeze({
+  es,
+  ru,
+  uk,
+  'zh-CN': zhCN,
+  'zh-Hant': zhHant,
+});
 
 let currentLocale = DEFAULT_LOCALE;
 

src/i18n/locale.js

@@ -8,13 +8,21 @@ export const LOCALE_STORAGE_KEY = 'gev:locale:v1';
 export const DEFAULT_LOCALE = 'en';
 
 /** Shipped locales; order does not matter. Adding one: docs/TRANSLATORS.md. */
-export const LOCALES = Object.freeze(['en', 'es', 'ru', 'zh-CN', 'zh-Hant']);
+export const LOCALES = Object.freeze([
+  'en',
+  'es',
+  'ru',
+  'uk',
+  'zh-CN',
+  'zh-Hant',
+]);
 
 /** Each locale named in its own language, for the selector. */
 export const LOCALE_NAMES = Object.freeze({
   en: 'English',
   es: 'Español',
   ru: 'Русский',
+  uk: 'Українська',
   'zh-CN': '中文（简体）',
   'zh-Hant': '中文（繁體）',
 });

src/i18n/same-as-english.json

@@ -142,6 +142,19 @@
     "VS",
     "WHOT/BHOT"
   ],
+  "uk": [
+    "AIS: --",
+    "AIS: {name}",
+    "CCTV",
+    "CRT",
+    "FLIR",
+    "Ironbow",
+    "Landsat 8/9",
+    "NVG",
+    "REC",
+    "S2 GhostMaps",
+    "WHOT/BHOT"
+  ],
   "zh-CN": [
     "1090 MHz",
     "978 MHz UAT",

src/layers/vessels/lifecycle.js

@@ -11,7 +11,7 @@ export function createLifecycle({
 }) {
   const { state } = vesselState;
   const { restoreSpriteOrder, restoreSpriteOrderOnEnable } = services.sprites;
-  const { holdContinuousRender, releaseContinuousRender } = services.render;
+  const { releaseContinuousRender } = services.render;
   const { ensureGeoidReady } = services.geoid;
   const { registerPickOwner, unregisterPickOwner } = services.picking;
 
@@ -125,6 +125,7 @@ export function createLifecycle({
     state.interactionHandlerFactory = null;
     state.interactionKeyTarget = null;
     state.preRenderRemover = null;
+    components.rendering.cancelTrailingVisibilityPass();
     state.lastVisibilityUpdate = 0;
     state.lastFocusUpdate = 0;
     state.activeFocusCount = 0;
@@ -164,7 +165,6 @@ export function createLifecycle({
       const wasEnabled = state.feed.enabled;
       state.feed.enabled = true;
       if (!wasEnabled) beginAisSession();
-      holdContinuousRender('ais-vessels'); // per-frame animator (perf wave 2)
       const activeViewer = viewer || state.viewer;
       components.rendering.ensureCollections(activeViewer);
       components.selection.installInteraction(activeViewer);
@@ -208,6 +208,7 @@ export function createLifecycle({
       state.feed.enabled = false;
       invalidateAisSession();
       releaseContinuousRender('ais-vessels');
+      components.rendering.cancelTrailingVisibilityPass();
       unregisterPickOwner('ais-live-vessels');
       components.rendering.setVisible(false);
       vesselState._vesselOverlayHost.clearSource(VESSEL_OVERLAY_SOURCE_ID);
@@ -227,6 +228,7 @@ export function createLifecycle({
       const activeViewer = viewer || state.viewer;
       invalidateAisSession();
       releaseContinuousRender('ais-vessels'); // direct-destroy path (perf wave 2 fix)
+      components.rendering.cancelTrailingVisibilityPass();
       if (state.feed.abort) state.feed.abort.abort();
       unregisterPickOwner('ais-live-vessels');
       components.selection.clearVesselInspection();

src/layers/vessels/ownership.test.mjs

@@ -29,7 +29,11 @@ function services() {
       forgetSpriteFocus: noop,
     },
     worldFocus: {},
-    render: { releaseContinuousRender: noop },
+    render: {
+      holdContinuousRender: noop,
+      releaseContinuousRender: noop,
+      governorRequestRender: noop,
+    },
   };
 }
 function setup(source, options = {}) {

src/layers/vessels/renderGovernor.test.mjs

@@ -0,0 +1,138 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { createVesselLayer } from './index.js';
+import { VISIBILITY_UPDATE_MS } from './policy.js';
+
+// Vessels move only when a poll lands, so the layer must let the scene idle:
+// it asks for frames for forced passes and one trailing frame after the camera
+// stops, and never schedules a frame from a pass the camera did not cause.
+
+const noop = () => {};
+
+function setup() {
+  let clock = 10_000;
+  const requests = [];
+  const holds = new Set();
+  const timers = new Map();
+  let nextTimer = 1;
+  const layer = createVesselLayer({
+    source: { getSnapshot: async () => ({ records: [] }) },
+    services: {
+      context: {
+        clearSelectedEntityContextForLayer: noop,
+        registerEntityContext: () => null,
+      },
+      trails: {
+        createTrail: () => ({ setPositions: noop, clear: noop, destroy: noop }),
+      },
+      labels: {},
+      picking: { unregisterPickOwner: noop },
+      overlay: {
+        setOverlayEntries: noop,
+        setOverlaySourceVisible: noop,
+        clearOverlaySource: noop,
+      },
+      geoid: {},
+      sprites: {},
+      focus: {
+        focusNowMs: () => clock,
+        getFocusTarget: () => null,
+        focusPassIsNeeded: () => false,
+        forgetSpriteFocus: noop,
+      },
+      worldFocus: {},
+      render: {
+        holdContinuousRender: (id) => holds.add(id),
+        releaseContinuousRender: (id) => holds.delete(id),
+        governorRequestRender: (reason) => requests.push(reason),
+      },
+    },
+  });
+  const camera = {
+    positionWC: { x: 0, y: 0, z: 7_000_000 },
+    heading: 0,
+    pitch: -1.2,
+    roll: 0,
+  };
+  layer.testing._setVesselStateForTest({ viewer: { camera, scene: {} } });
+  layer.testing._setAisRuntimeForTest({
+    now: () => clock,
+    setTimeout(fn, ms) {
+      const id = nextTimer++;
+      timers.set(id, { fn, at: clock + ms });
+      return id;
+    },
+    clearTimeout: (id) => timers.delete(id),
+  });
+  const advance = (ms) => {
+    clock += ms;
+    for (const [id, timer] of [...timers]) {
+      if (timer.at > clock) continue;
+      timers.delete(id);
+      timer.fn();
+    }
+  };
+  const frame = () => layer.testing._runVisibilityPassForTest();
+  return { layer, camera, requests, holds, timers, advance, frame };
+}
+
+test('a parked camera schedules no frames after the cadence pass', () => {
+  const { requests, holds, timers, advance, frame } = setup();
+  frame();
+  for (let i = 0; i < 20; i += 1) {
+    advance(100);
+    frame();
+  }
+  assert.deepEqual(requests, []);
+  assert.equal(timers.size, 0);
+  assert.equal(holds.has('ais-vessels'), false);
+});
+
+test('a camera that stops inside the cadence gets exactly one trailing frame', () => {
+  const { layer, camera, requests, timers, advance, frame } = setup();
+  frame();
+  advance(100);
+  camera.heading = 0.5;
+  frame();
+  advance(100);
+  frame();
+  assert.equal(timers.size, 1, 'one trailing frame, not one per skipped pass');
+  assert.equal(layer.testing._hasTrailingVisibilityPassForTest(), true);
+
+  advance(VISIBILITY_UPDATE_MS);
+  assert.deepEqual(requests, ['ais-vessels-visibility']);
+  // The trailing frame runs the regular pass on the pose the camera stopped
+  // on. Its own frames must not schedule another one.
+  frame();
+  for (let i = 0; i < 20; i += 1) {
+    advance(100);
+    frame();
+  }
+  assert.deepEqual(requests, ['ais-vessels-visibility']);
+  assert.equal(timers.size, 0);
+});
+
+test('a forced pass requests its own frame', () => {
+  const { layer, requests } = setup();
+  layer.testing._runVisibilityPassForTest(true);
+  assert.deepEqual(requests, ['ais-vessels-update']);
+});
+
+test('destroy cancels a pending trailing frame', (t) => {
+  const originalDocument = globalThis.document;
+  globalThis.document = { getElementById: () => null };
+  t.after(() => {
+    if (originalDocument === undefined) delete globalThis.document;
+    else globalThis.document = originalDocument;
+  });
+  const { layer, camera, requests, timers, advance, frame } = setup();
+  frame();
+  advance(100);
+  camera.heading = 0.5;
+  frame();
+  assert.equal(timers.size, 1);
+  layer.destroy();
+  assert.equal(timers.size, 0);
+  advance(VISIBILITY_UPDATE_MS);
+  assert.deepEqual(requests, []);
+});

src/layers/vessels/rendering.js

@@ -75,7 +75,13 @@ export function createRendering({
     focusPassIsNeeded,
     advanceSpriteFocus,
     focusAlphaNeedsWrite,
+    spriteFocusAtRest,
   } = services.focus;
+  const {
+    holdContinuousRender,
+    releaseContinuousRender,
+    governorRequestRender,
+  } = services.render;
 
   function renderRowLimit() {
     const configured = Number(options.maxRows);
@@ -196,6 +202,14 @@ export function createRendering({
     return icon;
   }
 
+  // Vessels move only when a poll lands, so the layer does not hold the
+  // continuous render loop. Its passes run in preRender, which idle mode fires
+  // only for rendered frames: a forced pass (new data, selection) requests its
+  // frame, a frame that moved the camera but fell inside the 800 ms cadence
+  // leaves a trailing frame so the view the camera stopped on is always
+  // evaluated, and the continuous hold is kept only while focus emphasis is
+  // animating. The trailing frame is keyed to camera motion alone: the pass's
+  // own label publication requests a frame, and scheduling on that would loop.
   function installRuntime(viewer) {
     if (state.preRenderRemover || !viewer) return;
     state.preRenderRemover = viewer.scene.preRender.addEventListener(() =>
@@ -203,8 +217,27 @@ export function createRendering({
     );
   }
 
+  function scheduleTrailingVisibilityPass(now) {
+    if (state.trailingVisibilityTimer) return;
+    const waitMs = Math.max(
+      0,
+      VISIBILITY_UPDATE_MS - (now - state.lastVisibilityUpdate),
+    );
+    state.trailingVisibilityTimer = vesselState._aisRuntime.setTimeout(() => {
+      state.trailingVisibilityTimer = null;
+      if (state.feed.enabled) governorRequestRender('ais-vessels-visibility');
+    }, waitMs);
+  }
+
+  function cancelTrailingVisibilityPass() {
+    if (!state.trailingVisibilityTimer) return;
+    vesselState._aisRuntime.clearTimeout(state.trailingVisibilityTimer);
+    state.trailingVisibilityTimer = null;
+  }
+
   function updateVisibility(force = false) {
     if (!state.feed.enabled) return;
+    if (force) governorRequestRender('ais-vessels-update');
     const now = focusNowMs(performance.now());
     const focusTarget = getFocusTarget();
     const regularPass =
@@ -212,13 +245,30 @@ export function createRendering({
     const focusPass =
       focusPassIsNeeded(focusTarget, state.activeFocusCount) &&
       (force || now - state.lastFocusUpdate >= FOCUS_UPDATE_MS);
+    if (
+      !regularPass &&
+      state.viewer?.camera &&
+      cameraPoseSignature(state.viewer.camera) !== vesselState._lastCamPoseSig
+    )
+      scheduleTrailingVisibilityPass(now);
     if (!regularPass && !focusPass) return;
     if (regularPass) state.lastVisibilityUpdate = now;
     if (focusPass) state.lastFocusUpdate = now;
     if (!state.records.all.length) {
       // No records — flush any lingering card entries (vanished-feed case).
-      if (regularPass) updateClusteredLabels([]);
-      if (focusPass) state.activeFocusCount = 0;
+      // Still record the pose this pass evaluated, or every later frame that
+      // falls inside the cadence would schedule another trailing frame.
+      if (regularPass) {
+        if (state.viewer?.camera)
+          vesselState._lastCamPoseSig = cameraPoseSignature(
+            state.viewer.camera,
+          );
+        updateClusteredLabels([]);
+      }
+      if (focusPass) {
+        state.activeFocusCount = 0;
+        releaseContinuousRender('ais-vessels');
+      }
       return;
     }
 
@@ -272,6 +322,9 @@ export function createRendering({
           Cesium.Cartesian3.distance(camera.positionWC, position),
       });
       state.activeFocusCount = result.activeCount;
+      if (result.activeCount > 0 || result.transitioning)
+        holdContinuousRender('ais-vessels');
+      else releaseContinuousRender('ais-vessels');
     }
   }
 
@@ -302,6 +355,16 @@ export function createRendering({
       const bb = visual?.billboard;
       const position = bb?.position || visual?.position;
       if (!bb || !position) continue;
+      // Most of a worldwide feed sits behind the horizon. A hidden sprite with
+      // no pending focus state and full alpha would advance to exactly what it
+      // already is, so skip it instead of paying its distance and state work
+      // every 80 ms while anything is tracked.
+      if (
+        bb.show === false &&
+        spriteFocusAtRest(bb) &&
+        !focusAlphaNeedsWrite(bb.color?.alpha, 1, params)
+      )
+        continue;
       const focus = advanceSpriteFocus(bb, {
         // Hidden/far-side sprites still finish any pending release so the active
         // count remains truthful and they cannot reappear with stale dim alpha.
@@ -510,6 +573,7 @@ export function createRendering({
     shipIcon,
     installRuntime,
     updateVisibility,
+    cancelTrailingVisibilityPass,
     applyVesselFocusDeemphasis,
     makeOccluder,
     isVisible,

src/layers/vessels/state.js

@@ -64,6 +64,8 @@ export function createVesselState({ source, services }) {
     /** Test-only key target paired with interactionHandlerFactory. */
     interactionKeyTarget: null,
     preRenderRemover: null,
+    /** Pending timer that renders one frame after a cadence-skipped pass. */
+    trailingVisibilityTimer: null,
     lastVisibilityUpdate: 0,
     lastFocusUpdate: 0,
     /** Sprites whose animated emphasis remains outside the 1.0 deadband. */

src/layers/vessels/testing.js

@@ -151,6 +151,18 @@ export function createTesting({
     };
   }
 
+  /** Run one preRender visibility/focus pass. Test-only seam. */
+
+  function _runVisibilityPassForTest(force = false) {
+    components.rendering.updateVisibility(force);
+  }
+
+  /** True while a trailing visibility frame is scheduled. Test-only seam. */
+
+  function _hasTrailingVisibilityPassForTest() {
+    return state.trailingVisibilityTimer !== null;
+  }
+
   /**
    * Read lifecycle ownership state without exposing the mutable state object.
    * Test-only seam.
@@ -176,5 +188,7 @@ export function createTesting({
     _setAisRuntimeForTest,
     _getVesselFeedStateForTest,
     _getVesselStateForTest,
+    _runVisibilityPassForTest,
+    _hasTrailingVisibilityPassForTest,
   };
 }

src/ui/localePicker.test.mjs

@@ -40,7 +40,7 @@ test('the current language comes first, the rest by their own names', () => {
         nativeNames: LOCALE_NAMES,
       }),
     ),
-    ['ru', 'en', 'es', 'zh-CN', 'zh-Hant'],
+    ['ru', 'uk', 'en', 'es', 'zh-CN', 'zh-Hant'],
   );
   assert.deepEqual(
     codes(
@@ -50,7 +50,7 @@ test('the current language comes first, the rest by their own names', () => {
         nativeNames: LOCALE_NAMES,
       }),
     ),
-    ['es', 'en', 'ru', 'zh-CN', 'zh-Hant'],
+    ['es', 'en', 'ru', 'uk', 'zh-CN', 'zh-Hant'],
   );
   assert.deepEqual(
     codes(
@@ -60,7 +60,7 @@ test('the current language comes first, the rest by their own names', () => {
         nativeNames: LOCALE_NAMES,
       }),
     ),
-    ['en', 'es', 'ru', 'zh-CN', 'zh-Hant'],
+    ['en', 'es', 'ru', 'uk', 'zh-CN', 'zh-Hant'],
   );
   const rows = buildLocaleOptions({
     locales: MANY,
@@ -261,7 +261,8 @@ test('keyboard model: open on the current language, move, choose, close', () =>
   model.openList();
   assert.equal(model.activeOption.code, 'ru');
   assert.deepEqual(model.keydown({ key: 'ArrowDown' }), { handled: true });
-  assert.equal(model.activeOption.code, 'en');
+  // Russian collation puts the other Cyrillic name next.
+  assert.equal(model.activeOption.code, 'uk');
   model.keydown({ key: 'End' });
   assert.equal(model.activeOption.code, 'zh-Hant');
   model.keydown({ key: 'Home' });
@@ -275,7 +276,7 @@ test('keyboard model: open on the current language, move, choose, close', () =>
   model.keydown({ key: 'ArrowDown' });
   assert.deepEqual(model.keydown({ key: ' ' }), {
     handled: true,
-    choose: 'en',
+    choose: 'uk',
   });
   assert.deepEqual(model.keydown({ key: 'Escape' }), {
     handled: true,

src/ui/styles/cockpit.css

@@ -730,7 +730,8 @@ html:not([lang='en']) .cockpit-roll-token.is-separator {
 }
 .cockpit-vision-controls {
   display: grid;
-  grid-template-columns: 48px 58px 48px;
+  /* The current style grows for a long translated name (ЗВИЧАЙНИЙ). */
+  grid-template-columns: 48px minmax(58px, max-content) 48px;
   align-items: stretch;
   gap: 2px;
   margin-top: 2px;