[codex] fix node workflow dynamic require builds

[mihaipxm]

Summary

Fixes #2.

This updates node-platform workflow builds so bundled CommonJS dependencies that dynamically require Node built-ins, such as stream, can be loaded during manifest extraction and by the self-hosted Node runner.

Root Cause

The CLI builds workflow entries as ESM and immediately imports bundle.mjs to collect registered workflows. When esbuild preserves a CommonJS dynamic require helper in a node-platform ESM bundle, Node does not provide an ambient require, so manifest extraction fails even though the dependency is valid for Node.

Changes

• Adds a node-only esbuild banner that defines require with createRequire(import.meta.url).
• Adds a regression test using a real bundled CJS dependency that dynamically requires stream.
• Verifies neutral/browser bundles do not receive the Node require shim.
• Documents that node workflow bundles are loaded through Node's file-backed ESM loader contract.
• Adds a patch changeset for @voyantjs/cli.

Validation

• pnpm --filter @voyantjs/cli check-types
• pnpm lint
• pnpm --filter @voyantjs/cli test

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Avoid declaring a fixed top-level require

For --platform node this banner is prepended verbatim to every bundled ESM file, so any workflow entry that already declares a top-level require (for example the standard Node ESM pattern const require = createRequire(import.meta.url)) will produce a bundle with two top-level require declarations and fail to import during manifest extraction with an identifier redeclaration error. Because esbuild does not parse banner text for name collision avoidance, use an injected/renamed shim or a less collision-prone helper instead of reserving require globally in the bundle.

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