Nomad changes

.ai-rulez/domains/plugin-system/rules/python-ffi-plugins.md

@@ -0,0 +1,11 @@
+---
+priority: high
+---
+
+- GIL management: use py.allow_threads() for expensive Rust operations
+- Cache frequently-accessed Python data in Rust fields to minimize GIL acquisitions
+- Use tokio::task::spawn_blocking for async calls to Python backends
+- Python exception translation: convert Python exceptions to Rust errors with full context
+- Data type mapping: Python str <-> Rust String, Python bytes <-> Rust Vec<u8>, Python dict <-> Rust HashMap
+- Validate Python plugin protocol compliance on registration
+- Target GIL overhead: 5-55us per acquisition