feat: add Rust reverse proxy with JSON logging

- Axum-based API server with Unix socket and TCP support
- Custom tracing formatters for Railway-compatible JSON logs
- SvelteKit hooks and Vite plugin for unified logging
- Justfile updated for concurrent dev workflow with hl log viewer

web/svelte.config.js

@@ -9,6 +9,7 @@ const config = {
     adapter: adapter({
       out: "build",
       precompress: false,
+      serveAssets: false,
     }),
     alias: {
       $components: "src/lib/components",