fix(pro-dummy): address PR #3200 review nits

Apply optional cleanups from CodeRabbit and claude[bot] review:

- Replace `ndb` with `node --inspect` in `node-renderer:debug` so the
  script works without a global `ndb` install. Drop the duplicated
  hyphen-style `node-renderer-debug` script and update the OSS
  debugging doc to point at the colon-style name.
- Use `parseInt(devServer.port, 10)` instead of `Number(devServer.port)`
  in both Pro dummy and ExecJS dummy webpack development configs to
  make the base-10 numeric-parse intent explicit.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: justin808

docs/oss/building-features/node-renderer/debugging.md

@@ -42,7 +42,7 @@ Use this when you need full control over the renderer process — different flag
 1. If you want to attach a debugger instead, run:
    ```bash
    cd react_on_rails_pro/spec/dummy
-   pnpm run node-renderer-debug
+   pnpm run node-renderer:debug
    ```
 1. Reload the page that triggers the SSR issue and reproduce the problem.
 1. If you change Ruby code in loaded gems, restart the Rails server.

react_on_rails_pro/spec/dummy/config/webpack/development.js

@@ -13,7 +13,7 @@ const developmentEnvOnly = (clientWebpackConfig, _serverWebpackConfig) => {
         overlay: {
           // bin/dev sets SHAKAPACKER_DEV_SERVER_PORT as a string, which Shakapacker
           // surfaces unchanged on devServer.port. The plugin schema requires a number.
-          sockPort: Number(devServer.port),
+          sockPort: parseInt(devServer.port, 10),
         },
       }),
     );

react_on_rails_pro/spec/dummy/package.json

@@ -104,8 +104,7 @@
     "build:client": "RAILS_ENV=production NODE_ENV=production bin/shakapacker",
     "build:server": "RAILS_ENV=production NODE_ENV=production SERVER=true bin/shakapacker",
     "build:clean": "rm -rf public/webpack && rm -rf ssr-generated || true",
-    "node-renderer-debug": "RENDERER_PORT=3800 ndb renderer/node-renderer.js",
-    "node-renderer:debug": "RENDERER_PORT=3800 ndb renderer/node-renderer.js",
+    "node-renderer:debug": "RENDERER_LOG_LEVEL=debug RENDERER_PORT=3800 node --inspect renderer/node-renderer.js",
     "node-renderer": "RENDERER_PORT=3800 node renderer/node-renderer.js",
     "node-renderer:fresh": "pnpm --filter react-on-rails-pro-node-renderer run build && RENDERER_LOG_LEVEL=debug RENDERER_PORT=3800 node --inspect renderer/node-renderer.js",
     "node-renderer:build-watch": "pnpm --filter react-on-rails-pro-node-renderer run build-watch"

react_on_rails_pro/spec/execjs-compatible-dummy/config/webpack/development.js

@@ -18,7 +18,7 @@ const developmentEnvOnly = (clientWebpackConfig, _serverWebpackConfig) => {
         overlay: {
           // bin/dev sets SHAKAPACKER_DEV_SERVER_PORT as a string, which Shakapacker
           // surfaces unchanged on devServer.port. The plugin schema requires a number.
-          sockPort: Number(devServer.port),
+          sockPort: parseInt(devServer.port, 10),
         },
       }),
     );