# Pattern Candidate Catalog

This file tracks concepts before promotion into canonical pattern files.

| Candidate | Family | Scale | Status | Main force |
|---|---|---:|---|---|
| Server Authority | authority | L2 | seed | authoritative consistency |
| Local Authority | authority | L2 | seed | offline usability |
| Replicated Authority | authority | L2 | seed | collaborative concurrency |
| URL as Application State | address | L3 | seed | addressability |
| Server Projection | projection | L3 | seed | client compute / delivery |
| Client Projection | projection | L3 | seed | interaction locality |
| Streaming Projection | projection | L3 | seed | first-content latency |
| Islands of Interactivity | projection | L3 | seed | client execution cost |
| Local Interaction State | affordance | L6 | seed | responsiveness |
| Optimistic Overlay | affordance | L6 | seed | interaction latency |
| Invalidate and Reproject | synchronization | L3/L6 | seed | freshness |
| Persistent Subscription | synchronization | L3 | seed | update latency |
| Vertical Feature Slice | composition | L4 | seed | change locality |
| Independent Feature Boundary | composition | L4 | seed | team autonomy |
| Progressive Enhancement | quality | cross-scale | seed | resilience/accessibility |
| Failure Boundary | quality | L5/L6 | seed | fault containment |

`seed` means "worth researching", not "accepted into the canon".