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>

.gemini/commands/bmad-bmm-document-project.toml

@@ -0,0 +1,16 @@
+description = """Analyzes and documents brownfield projects by scanning codebase, architecture, and patterns to create comprehensive reference documentation for AI-assisted development"""
+prompt = """
+Execute the BMAD 'document-project' workflow.
+
+CRITICAL: This is a structured YAML workflow. Follow these steps precisely:
+
+1. LOAD the workflow definition from {project-root}/_bmad/bmm/workflows/document-project/workflow.yaml
+2. PARSE the YAML structure to understand:
+   - Workflow phases and steps
+   - Required inputs and outputs
+   - Dependencies between steps
+3. EXECUTE each step in order
+4. VALIDATE outputs before proceeding to next step
+
+WORKFLOW FILE: {project-root}/_bmad/bmm/workflows/document-project/workflow.yaml
+"""