feat(review,teams): review foundation — segments, side-by-side editor, rebuild, XLIFF, team workspaces

Foundations:
- TranslationSegment model + migration f7e8d9c0b1a2 (segments, workspaces,
  workspace_members, glossaries.workspace_id)
- SegmentRecorder injected into all 4 translators: unique (source,
  translation) pairs captured per job and persisted (best-effort)
- set_segment_overrides: human-reviewed translations applied verbatim on
  rebuild — top priority over TM and provider, zero API calls

Review API (routes/review_routes.py):
- GET /translations/{id}/segments (owner or job token)
- PATCH /segments/{id} edit/approve — feeds the per-user TM so approved
  translations are reused in later jobs
- POST /translations/{id}/rebuild — rebuild document with reviewed text
- GET/POST /translations/{id}/xliff — XLIFF 1.2 export/import (edited
  segments export their reviewed text)

Review editor (frontend /dashboard/reviews/[jobId]):
- side-by-side source/translation table, inline edit, approve (single or
  all), rebuild & download (auth blob), XLIFF export/import, 13 locales
- 'Relire et corriger' link on the translation-complete screen

Team workspaces (routes/workspace_routes.py + /dashboard/teams):
- Workspace/WorkspaceMember models, roles owner/admin/member
- create (Business plan), list with seat usage, invite by email with
  seat-limit enforcement (Business=5, Enterprise unlimited), removal
- shared glossaries: workspace members can use a glossary shared to their
  workspace (access check extended)

Tests: 1184 passed / 0 failed (11 new: recorder, overrides, docx
capture->rebuild e2e, XLIFF structure/escaping, seats, workspace CRUD,
shared glossary access)

frontend/src/lib/i18n/messages/ar/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "وصول مميز",
   "dashboard.checkoutSyncError": "خطأ في مزامنة الدفع.",
   "dashboard.networkRefresh": "خطأ في الشبكة. يرجى تحديث الصفحة.",
-  "dashboard.continueToTranslate": "متابعة إلى الترجمة"
+  "dashboard.continueToTranslate": "متابعة إلى الترجمة",
+  "dashboard.nav.teams": "الفريق"
 }

frontend/src/lib/i18n/messages/de/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "Premium-Zugang",
   "dashboard.checkoutSyncError": "Fehler beim Synchronisieren der Zahlung.",
   "dashboard.networkRefresh": "Netzwerkfehler. Bitte aktualisieren Sie die Seite.",
-  "dashboard.continueToTranslate": "Weiter zur Übersetzung"
+  "dashboard.continueToTranslate": "Weiter zur Übersetzung",
+  "dashboard.nav.teams": "Team"
 }

frontend/src/lib/i18n/messages/en/dashboard.json

@@ -111,5 +111,6 @@
   "dashboard.topbar.premiumAccess": "Premium Access",
   "dashboard.checkoutSyncError": "Error syncing payment.",
   "dashboard.networkRefresh": "Network error. Please refresh the page.",
-  "dashboard.continueToTranslate": "Continue to translation"
+  "dashboard.continueToTranslate": "Continue to translation",
+  "dashboard.nav.teams": "Team"
 }

frontend/src/lib/i18n/messages/es/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "Acceso Premium",
   "dashboard.checkoutSyncError": "Error al sincronizar el pago.",
   "dashboard.networkRefresh": "Error de red. Por favor, actualice la página.",
-  "dashboard.continueToTranslate": "Continuar a la traducción"
+  "dashboard.continueToTranslate": "Continuar a la traducción",
+  "dashboard.nav.teams": "Equipo"
 }

frontend/src/lib/i18n/messages/fa/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "دسترسی ویژه",
   "dashboard.checkoutSyncError": "خطا در همگام‌سازی پرداخت.",
   "dashboard.networkRefresh": "خطای شبکه. لطفاً صفحه را تازه‌سازی کنید.",
-  "dashboard.continueToTranslate": "ادامه به ترجمه"
+  "dashboard.continueToTranslate": "ادامه به ترجمه",
+  "dashboard.nav.teams": "تیم"
 }

frontend/src/lib/i18n/messages/fr/dashboard.json

@@ -111,5 +111,6 @@
   "dashboard.topbar.premiumAccess": "Accès Premium",
   "dashboard.checkoutSyncError": "Erreur lors de la synchronisation du paiement.",
   "dashboard.networkRefresh": "Erreur réseau. Veuillez rafraîchir la page.",
-  "dashboard.continueToTranslate": "Continuer vers la traduction"
+  "dashboard.continueToTranslate": "Continuer vers la traduction",
+  "dashboard.nav.teams": "Équipe"
 }

frontend/src/lib/i18n/messages/it/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "Accesso Premium",
   "dashboard.checkoutSyncError": "Errore di sincronizzazione del pagamento.",
   "dashboard.networkRefresh": "Errore di rete. Aggiorna la pagina.",
-  "dashboard.continueToTranslate": "Vai alla traduzione"
+  "dashboard.continueToTranslate": "Vai alla traduzione",
+  "dashboard.nav.teams": "Squadra"
 }

frontend/src/lib/i18n/messages/ja/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "プレミアムアクセス",
   "dashboard.checkoutSyncError": "支払いの同期エラー。",
   "dashboard.networkRefresh": "ネットワークエラー。ページを更新してください。",
-  "dashboard.continueToTranslate": "翻訳に進む"
+  "dashboard.continueToTranslate": "翻訳に進む",
+  "dashboard.nav.teams": "チーム"
 }

frontend/src/lib/i18n/messages/ko/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "프리미엄 액세스",
   "dashboard.checkoutSyncError": "결제 동기화 오류.",
   "dashboard.networkRefresh": "네트워크 오류. 페이지를 새로 고치세요.",
-  "dashboard.continueToTranslate": "번역으로 계속"
+  "dashboard.continueToTranslate": "번역으로 계속",
+  "dashboard.nav.teams": "팀"
 }

frontend/src/lib/i18n/messages/nl/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "Premium-toegang",
   "dashboard.checkoutSyncError": "Fout bij synchroniseren van betaling.",
   "dashboard.networkRefresh": "Netwerkfout. Vernieuw de pagina.",
-  "dashboard.continueToTranslate": "Doorgaan naar vertaling"
+  "dashboard.continueToTranslate": "Doorgaan naar vertaling",
+  "dashboard.nav.teams": "Team"
 }

frontend/src/lib/i18n/messages/pt/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "Acesso Premium",
   "dashboard.checkoutSyncError": "Erro ao sincronizar o pagamento.",
   "dashboard.networkRefresh": "Erro de rede. Atualize a página.",
-  "dashboard.continueToTranslate": "Continuar para a tradução"
+  "dashboard.continueToTranslate": "Continuar para a tradução",
+  "dashboard.nav.teams": "Equipe"
 }

frontend/src/lib/i18n/messages/ru/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "Премиум-доступ",
   "dashboard.checkoutSyncError": "Ошибка синхронизации платежа.",
   "dashboard.networkRefresh": "Ошибка сети. Обновите страницу.",
-  "dashboard.continueToTranslate": "Перейти к переводу"
+  "dashboard.continueToTranslate": "Перейти к переводу",
+  "dashboard.nav.teams": "Команда"
 }

frontend/src/lib/i18n/messages/zh/dashboard.json

@@ -107,5 +107,6 @@
   "dashboard.topbar.premiumAccess": "高级访问",
   "dashboard.checkoutSyncError": "同步付款时出错。",
   "dashboard.networkRefresh": "网络错误。请刷新页面。",
-  "dashboard.continueToTranslate": "继续翻译"
+  "dashboard.continueToTranslate": "继续翻译",
+  "dashboard.nav.teams": "团队"
 }