Nomad changes

.ai-rulez/domains/plugin-system/rules/plugin-registry-and-selection.md

@@ -0,0 +1,12 @@
+---
+priority: critical
+---
+
+- Separate typed registry per plugin type (ExtractorRegistry, OcrRegistry, etc.)
+- Thread safety: Arc<RwLock<>> for all registries
+- Priority system: 0-255, default 50, custom > 50, fallback < 50
+- Selection: highest priority plugin matching the MIME type wins
+- MIME type indexing for O(log n) lookup
+- Conflict resolution: if equal priority, prefer Rust-native over FFI plugins
+- Dynamic registration: plugins can be added/removed at runtime
+- Validate plugin before registration (check trait compliance, supported formats)