fix: correct inspector package name in Dockerfiles and add .dockerignore (#50)

* chore: remove inspect.sandboxagent.dev in favor of /ui/

* chore: add 404 page

* fix: correct inspector package name in Dockerfiles and add .dockerignore

- Change @anthropic-ai/sdk-inspector to @sandbox-agent/inspector in all Dockerfiles
- Add .dockerignore to exclude target/, node_modules/, etc from Docker context

The wrong package name caused pnpm install --filter to match nothing, so the
inspector frontend was never built, resulting in binaries without the /ui/ endpoint.

* chore: cargo fmt

* chore(release): update version to 0.1.4-rc.7

server/packages/openapi-gen/src/main.rs

@@ -47,7 +47,11 @@ fn init_logging() {
     let filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info"));
     tracing_subscriber::registry()
         .with(filter)
-        .with(tracing_logfmt::builder().layer().with_writer(std::io::stderr))
+        .with(
+            tracing_logfmt::builder()
+                .layer()
+                .with_writer(std::io::stderr),
+        )
         .init();
 }