selfhost: introduce using-based imports for compiler/parser/tools; keep includes temporarily. llvm: add PHI wiring JSON trace + unit/integration tests; fast test suite extended. runner: split selfhost helpers, small cleanups.

src/runtime/plugin_loader_v2/enabled/errors.rs

@@ -1,3 +1,4 @@
+#![allow(dead_code)]
 use crate::bid::{BidError, BidResult};
 
 // Minimal helpers to keep loader.rs lean and consistent

src/runtime/plugin_loader_v2/enabled/loader.rs

@@ -1,3 +1,4 @@
+#![allow(dead_code, private_interfaces)]
 use super::host_bridge::BoxInvokeFn;
 use super::types::{LoadedPluginV2, NyashTypeBoxFfi, PluginBoxMetadata, PluginBoxV2, PluginHandleInner};
 use crate::bid::{BidError, BidResult};

src/runtime/plugin_loader_v2/enabled/types.rs

@@ -1,3 +1,4 @@
+#![allow(dead_code)]
 use super::host_bridge::InvokeFn;
 use crate::box_trait::{BoxCore, NyashBox, StringBox};
 use std::any::Any;