feat(rust-bridge): integrate tsrust to build and locate cross-compiled Rust binaries; refactor rust-proxy bridge to use typed IPC and streamline process handling; add @push.rocks/smartrust and update build/dev dependencies

ts/proxies/smart-proxy/smart-proxy.ts

@@ -3,7 +3,6 @@ import { logger } from '../../core/utils/logger.js';
 
 // Rust bridge and helpers
 import { RustProxyBridge } from './rust-proxy-bridge.js';
-import { RustBinaryLocator } from './rust-binary-locator.js';
 import { RoutePreprocessor } from './route-preprocessor.js';
 import { SocketHandlerServer } from './socket-handler-server.js';
 import { RustMetricsAdapter } from './rust-metrics-adapter.js';
@@ -120,7 +119,7 @@ export class SmartProxy extends plugins.EventEmitter {
     if (!spawned) {
       throw new Error(
         'RustProxy binary not found. Set SMARTPROXY_RUST_BINARY env var, install the platform package, ' +
-        'or build locally with: cd rust && cargo build --release'
+        'or build locally with: pnpm build'
       );
     }