# Patterns

This directory contains canonical frontend patterns.

Each pattern should conform to `canon/PatternSchema.md`.

## Initial families

- `authority/`
- `address/`
- `projection/`
- `affordance/`
- `mutation/`
- `synchronization/`
- `composition/`
- `execution/`
- `quality/`

## Candidate seed patterns

### Authority

- Server Authority
- Local Authority
- Replicated Authority
- Event-Log Authority
- Single Writer
- Derived State

### Address

- URL as Application State
- Resource Address
- Hierarchical Route
- Progressive Navigation

### Projection

- Static Projection
- Server Projection
- Client Projection
- Hybrid Projection
- Streaming Projection
- Islands of Interactivity
- Server Components
- Progressive Hydration
- Resumable UI

### Affordance

- Local Interaction State
- Immediate Feedback
- Pending State
- Optimistic Overlay
- Undoable Intent
- Speculative Interaction

### Mutation & Synchronization

- Command Mutation
- Form Mutation
- Idempotent Mutation
- Invalidate and Reproject
- Pull Synchronization
- Push Synchronization
- Persistent Subscription
- Conflict-Free Merge
- Explicit Conflict

### Composition

- Presentation / Domain Separation
- Presentation Model
- Vertical Feature Slice
- Public Module Surface
- Independent Feature Boundary
- Microfrontend
- Backend for Frontend
- Design System

### Execution

- Build-Time Execution
- Server Execution
- Edge Execution
- Client Execution
- Deferred Execution
- Code Split
- Lazy Load
- Independent Deployment

### Quality

- Progressive Enhancement
- Accessible by Construction
- Failure Boundary
- Async Boundary
- Security Boundary
- Privacy Boundary
- Performance Budget
- Observable Interaction
- Recoverable Interaction

These names are candidates. Research should consolidate, rename, split or reject them as needed.