# Design {{ref}}: {{title}}

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## 1. Design Problem

## 2. Current State

## 3. Forces & Constraints

## 4. Guiding Principles

## 5. Proposed Design

### 5.1 System Model

### 5.2 Interfaces & Contracts

### 5.3 Data, State & Ownership

### 5.4 Lifecycle, Operations & Dynamics

### 5.5 Invariants, Assumptions & Edge Cases

## 6. Open Questions & Unknowns

## 7. Decisions, Rationale & Alternatives

## 8. Risks & Mitigations

## 9. Quality Engineering & Validation

## 10. Review Notes
