docs: update 5-container refs to 9-container architecture (refs #101)

Update all documentation to reflect the current 9-container architecture
(6 application + 3 logging) after the logging stack upgrades. Add missing
OCR, Loki, Alloy, and Grafana services to context.json.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/ARCHITECTURE-OVERVIEW.md

@@ -2,14 +2,20 @@
 
 ## Architecture Summary
 
-MotoVaultPro is a single-tenant vehicle management application built with a **5-container Docker-first architecture**. All development and deployment occurs in production-configured containers with no local installation dependencies.
+MotoVaultPro is a single-tenant vehicle management application built with a **9-container Docker-first architecture** (6 application + 3 logging). All development and deployment occurs in production-configured containers with no local installation dependencies.
 
-### Core Containers
+### Application Containers (6)
 1. **Traefik** - Reverse proxy and service discovery
 2. **Frontend** - React SPA with Vite (Node.js 20 + nginx)
 3. **Backend** - Node.js API with Fastify (Node.js 20) - includes platform feature module
-4. **PostgreSQL** - Primary database (PostgreSQL 18)
-5. **Redis** - Caching layer (Redis 8)
+4. **OCR** - Python-based document text extraction
+5. **PostgreSQL** - Primary database (PostgreSQL 18)
+6. **Redis** - Caching layer (Redis 8)
+
+### Logging Containers (3)
+7. **Loki** - Centralized log storage (30-day retention)
+8. **Alloy** - Log collection and forwarding
+9. **Grafana** - Log querying and visualization
 
 ### Key Architectural Principles
 - **Production-Only**: All services use production builds and configuration

docs/AUDIT.md

@@ -4,7 +4,7 @@
 **Classification:** Internal/Confidential
 **Audit Date:** December 13, 2025
 **Application Version:** 1.0.0
-**Architecture:** 5-Container Single-Tenant Docker Stack
+**Architecture:** 9-Container Single-Tenant Docker Stack (6 application + 3 logging)
 
 ---
 
@@ -12,7 +12,7 @@
 
 ### 1.1 High-Level Assessment
 
-**MotoVaultPro** is an automotive vehicle management platform built on a modern 5-container Docker architecture. The application demonstrates solid architectural foundations with proper authentication, modular feature design, and production-ready deployment configuration.
+**MotoVaultPro** is an automotive vehicle management platform built on a modern 9-container Docker architecture (6 application + 3 logging). The application demonstrates solid architectural foundations with proper authentication, modular feature design, and production-ready deployment configuration.
 
 ### 1.2 Key Findings Summary
 

docs/DATABASE-SCHEMA.md

@@ -1,6 +1,6 @@
 # Database Schema Overview
 
-Complete database schema for MotoVaultPro 5-container architecture with 15 feature capsules.
+Complete database schema for MotoVaultPro 9-container architecture with 15 feature capsules.
 
 ## Migration System