ui/phase-14: auto-sync order draft + always GET on boot + header headline

Replaces the manual Submit button with an auto-sync pipeline driven
by `OrderDraftStore`: every successful add / remove / move
coalesces a `submitOrder` call so the engine always mirrors the
local draft. Removing the last command sends an empty cmd[] PUT —
the engine, repo, and rest model now accept that as a valid
"player cleared their draft" state.

`hydrateFromServer` is now invoked unconditionally on game boot so
a fresh device picks up the player's stored order, and the local
cache is overwritten by the server's view (server is the source of
truth).

Header replaces the static "race ?" + turn counter with a single
headline string `<race> @ <game>, turn <n>`, sourced from the
engine's Report.race + the lobby's GameSummary.gameName + the live
turn number, with a `?` fallback while any piece is loading.

Tests:
- engine: empty PUT round-trips, repo round-trips empty Commands
- order-draft: auto-sync sends full draft on every mutation,
  rejected response surfaces error sync status, rapid mutations
  coalesce, server hydration overwrites cache
- order-tab: per-row status flips through the auto-sync lifecycle,
  remove → empty cmd[] PUT, rejected → retry button
- inspector overlay: applied + valid + submitting all participate
  in the optimistic projection
- header: live race / game / turn rendering with fall-back

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ui/frontend/src/lib/i18n/locales/ru.ts

@@ -84,9 +84,8 @@ const ru: Record<keyof typeof en, string> = {
 	"lobby.error.internal_error": "внутренняя ошибка сервера",
 	"lobby.error.unknown": "{message}",
 
-	"game.shell.race_placeholder": "раса ?",
-	"game.shell.turn_label": "ход",
-	"game.shell.turn_unknown": "?",
+	"game.shell.unknown": "?",
+	"game.shell.headline": "{race} @ {game}, ход {turn}",
 	"game.shell.connection.online": "онлайн",
 	"game.shell.connection.reconnecting": "переподключение…",
 	"game.shell.connection.offline": "офлайн",
@@ -121,8 +120,11 @@ const ru: Record<keyof typeof en, string> = {
 	"game.sidebar.empty.inspector": "выберите объект на карте",
 	"game.sidebar.empty.order": "приказ пуст",
 	"game.sidebar.order.command_delete": "удалить",
-	"game.sidebar.order.submit": "отправить",
-	"game.sidebar.order.submit_in_flight": "отправка…",
+	"game.sidebar.order.sync.idle": "нет изменений",
+	"game.sidebar.order.sync.in_flight": "синхронизация…",
+	"game.sidebar.order.sync.synced": "сохранено на сервере",
+	"game.sidebar.order.sync.error": "ошибка синхронизации: {message}",
+	"game.sidebar.order.sync.retry": "повторить",
 	"game.sidebar.order.status.draft": "черновик",
 	"game.sidebar.order.status.valid": "готова",
 	"game.sidebar.order.status.invalid": "ошибка",
@@ -131,7 +133,6 @@ const ru: Record<keyof typeof en, string> = {
 	"game.sidebar.order.status.rejected": "отклонена",
 	"game.sidebar.order.label.placeholder": "{label}",
 	"game.sidebar.order.label.planet_rename": "переименовать планету {planet} → {name}",
-	"game.sidebar.order.error.batch_failed": "ошибка отправки: {message}",
 	"game.bottom_tabs.map": "карта",
 	"game.bottom_tabs.calc": "калк",
 	"game.bottom_tabs.order": "приказ",