feat: production deployment - full update with providers, admin, glossaries, pricing, tests

Major changes across backend, frontend, infrastructure:
- Provider system with model selection (Google, DeepL, OpenAI, Ollama, Google Cloud)
- Admin panel: user management, pricing, settings
- Glossary system with CSV import/export
- Subscription and tier quota management
- Security hardening (rate limiting, API key auth, path traversal fixes)
- Docker compose for dev, prod, and IONOS deployment
- Alembic migrations for new tables
- Frontend: dashboard, pricing page, landing page, i18n (en/fr)
- Test suite and verification scripts

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

_bmad-output/implementation-artifacts/sprint-status.yaml

@@ -0,0 +1,128 @@
+# Sprint Status - office_translator
+# Generated by BMAD Sprint Planning Workflow
+
+# generated: 2026-02-19
+# project: office_translator
+# project_key: NOKEY
+# tracking_system: file-system
+# story_location: _bmad-output/implementation-artifacts
+
+# STATUS DEFINITIONS:
+# ==================
+# Epic Status:
+#   - backlog: Epic not yet started
+#   - in-progress: Epic actively being worked on
+#   - done: All stories in epic completed
+#
+# Epic Status Transitions:
+#   - backlog → in-progress: Automatically when first story is created (via create-story)
+#   - in-progress → done: Manually when all stories reach 'done' status
+#
+# Story Status:
+#   - backlog: Story only exists in epic file
+#   - ready-for-dev: Story file created in stories folder
+#   - in-progress: Developer actively working on implementation
+#   - review: Ready for code review (via Dev's code-review workflow)
+#   - done: Story completed
+#
+# Retrospective Status:
+#   - optional: Can be completed but not required
+#   - done: Retrospective has been completed
+#
+# WORKFLOW NOTES:
+# ===============
+# - Epic transitions to 'in-progress' automatically when first story is created
+# - Stories can be worked in parallel if team capacity allows
+# - SM typically creates next story after previous one is 'done' to incorporate learnings
+# - Dev moves story to 'review', then runs code-review (fresh context, different LLM recommended)
+
+generated: 2026-02-19
+project: office_translator
+project_key: NOKEY
+tracking_system: file-system
+story_location: _bmad-output/implementation-artifacts
+
+development_status:
+  # Epic 1: Backend - Authentification & Gestion Utilisateurs
+  epic-1: in-progress
+  1-1-setup-base-de-donnees-modele-user: done
+  1-2-inscription-utilisateur: done
+  1-3-login-utilisateur-jwt: done
+  1-4-logout-utilisateur: done
+  1-5-refresh-token: done
+  1-6-middleware-rate-limiting-par-tier: done
+  1-7-admin-changement-de-tier-manuel: done
+  1-8-tracking-usage-pour-billing: done
+  epic-1-retrospective: optional
+
+  # Epic 2: Backend - Moteur de Traduction
+  epic-2: in-progress
+  2-1-abstraction-provider-base-registry: done
+  2-2-provider-google-translate: done
+  2-3-provider-deepl: done
+  2-4-provider-ollama-llm-local: done
+  2-5-provider-openai-llm-cloud: done
+  2-6-provider-fallback-chain: done
+  2-7-processor-excel-xlsx: done
+  2-8-processor-word-docx: done
+  2-9-processor-powerpoint-pptx: done
+  2-10-endpoint-post-api-v1-translate-core: done
+  2-11-progress-feedback-temps-reel: done
+  2-12-telechargement-fichier-traduit: done
+  2-13-validation-format-fichier: done
+  2-14-stockage-temporaire-metadata: done
+  2-15-job-cleanup-fichiers-ttl-60-min: done
+  2-16-url-ingestion-telechargement-depuis-url: done
+  2-17-gestion-erreurs-graceful-zero-http-500: done
+  epic-2-retrospective: optional
+
+  # Epic 3: Backend - API & Automation (Pro)
+  epic-3: in-progress
+  3-1-modele-api-key-generation: done
+  3-2-revocation-api-key-user: done
+  3-3-admin-revocation-api-key-any-user: done
+  3-4-authentification-api-via-x-api-key: done
+  3-5-api-versioning-api-v1: done
+  3-6-documentation-openapi-swagger-redoc: done
+  3-7-webhook-specification-url: done
+  3-8-webhook-envoi-post-fire-forget: done
+  3-9-glossaires-endpoint-crud: done
+  3-10-glossaires-application-lors-traduction-llm: done
+  3-11-custom-prompts-endpoint-crud: done
+  3-12-custom-prompts-application-lors-traduction-llm: done
+  epic-3-retrospective: optional
+
+  # Epic 4: Frontend - Web Translation & User Dashboard (Merge)
+  epic-4: in-progress
+  4-1-setup-tanstack-query-api-client: done
+  4-2-landing-page: done
+  4-3-page-login: done
+  4-4-page-register: done
+  4-5-dashboard-layout: done
+  4-6-page-translation-upload: done
+  4-7-page-translation-configuration: done
+  4-8-page-translation-progress-download: done
+  4-9-dashboard-api-keys-management-pro: done
+  4-10-dashboard-glossaries-editor-pro: done
+  epic-4-retrospective: optional
+
+  # Epic 5: Frontend - Admin Dashboard (Merge)
+  epic-5: in-progress
+  5-1-admin-login: done
+  5-2-admin-layout-navigation: done
+  5-3-admin-system-health-dashboard: done
+  5-4-admin-user-management: done
+  5-5-admin-translation-statistics: done
+  5-6-admin-manual-file-cleanup: done
+  5-7-admin-error-logs-viewer: done
+  epic-5-retrospective: optional
+
+  # Epic 6: Infrastructure - Production Readiness
+  epic-6: in-progress
+  6-1-docker-compose-development: done
+  6-2-docker-compose-production: done
+  6-3-redis-configuration: done
+  6-4-structlog-integration: done
+  6-5-reverse-proxy-traefik-nginx: done
+  6-6-environment-configuration: done
+  epic-6-retrospective: optional