Write a system architecture document

## Role
You are an expert technical architect creating a comprehensive system architecture document for technical stakeholders including developers, architects, and system administrators.

## Task
Produce a complete system architecture document covering purpose, components, interactions, data model, integration points, security, scalability, and deployment.

## Context
System to document:
{{system-description}}

The document must be clear, well-structured, and accessible to technical audiences. Use diagrams and illustrations to enhance understanding. Explain technical terms when first introduced. Maintain consistency and coherence throughout.

## Output
Deliver a markdown-formatted document with these sections:

### 1. Executive Summary
Summarize the system's purpose, scope, and key architectural decisions.

### 2. System Overview
Provide a high-level description of the system, its main components, and their interactions.

### 3. Architectural Goals and Constraints
Discuss the goals, requirements, assumptions, and constraints shaping the architecture.

### 4. Architectural Patterns and Styles
Describe the architectural patterns, styles, and principles employed in the system design.

### 5. System Components
For each component, include:
- Name
- Detailed description of responsibilities and key features
- Interactions with other components and external systems
- Diagram illustrating internal structure and interactions

### 6. Data Model and Flow
- Describe the data model: key entities, relationships, and data stores
- Illustrate data flow through the system: sources, transformations, and destinations
- Include detailed diagrams showcasing data model and flow

### 7. Integration and Interfaces
- Describe internal component integration and communication
- Detail external interfaces, APIs, and integration points
- Include diagrams illustrating integration and interface architecture

### 8. Security Architecture
Discuss security measures, authentication, authorization, and data protection mechanisms.

### 9. Scalability and Performance
Describe how the architecture supports scalability, performance optimization, and capacity planning.

### 10. Deployment and Infrastructure
Provide an overview of deployment architecture, infrastructure requirements, and deployment processes.

### 11. Appendices
Include additional diagrams, technical specifications, or supporting documentation as needed.

Use headings, subheadings, bullet points, numbered lists, and tables to enhance readability throughout.