[refactor](workspace): complete remaining architecture phases

Bundle all pending repository updates, including plugin context de-globalization, runtime hardening, config validation, boundary tests, and supporting docs/scripts.

Co-authored-by: OpenAI Codex <codex@openai.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>

examples/trx-plugin-example/src/lib.rs

@@ -8,18 +8,25 @@ use tokio::sync::{mpsc, watch};
 use tokio::task::JoinHandle;
 use tracing::info;
 
-use trx_backend::{register_backend, RigAccess};
+use trx_backend::{RegistrationContext, RigAccess};
 use trx_core::{DynResult, RigRequest, RigState};
-use trx_frontend::{register_frontend, FrontendSpawner};
+use trx_frontend::{FrontendRuntimeContext, FrontendSpawner, FrontendRegistrationContext};
 
 const BACKEND_NAME: &str = "example";
 const FRONTEND_NAME: &str = "example-frontend";
 
-/// Entry point called by trx-server/trx-client when the plugin is loaded.
+/// Entry point called by trx-server when the plugin is loaded.
 #[no_mangle]
-pub extern "C" fn trx_register() {
-    register_backend(BACKEND_NAME, example_backend_factory);
-    register_frontend(FRONTEND_NAME, ExampleFrontend::spawn_frontend);
+pub extern "C" fn trx_register_backend(context: *mut std::ffi::c_void) {
+    let context = unsafe { &mut *(context as *mut RegistrationContext) };
+    context.register_backend(BACKEND_NAME, example_backend_factory);
+}
+
+/// Entry point called by trx-client when the plugin is loaded.
+#[no_mangle]
+pub extern "C" fn trx_register_frontend(context: *mut std::ffi::c_void) {
+    let context = unsafe { &mut *(context as *mut FrontendRegistrationContext) };
+    context.register_frontend(FRONTEND_NAME, ExampleFrontend::spawn_frontend);
 }
 
 fn example_backend_factory(_access: RigAccess) -> DynResult<Box<dyn trx_core::rig::RigCat>> {
@@ -34,6 +41,7 @@ impl FrontendSpawner for ExampleFrontend {
         _rig_tx: mpsc::Sender<RigRequest>,
         _callsign: Option<String>,
         listen_addr: SocketAddr,
+        _context: std::sync::Arc<FrontendRuntimeContext>,
     ) -> JoinHandle<()> {
         tokio::spawn(async move {
             info!("example frontend loaded at {} (no-op)", listen_addr);