Exclude ActionTargetApi and StandardApi from POS targets JSON

[laurelthorburn]

Background

TL;DR: For POS docs, ActionTargetApi and StandardApi were showing up in the generated targets API list even though they’re composite types made from other APIs we document (e.g. CartApi, ScannerApi, NavigationApi). We only want to list those constituent APIs in the docs, not the wrapper types—same idea as how StandardAPI is handled elsewhere.

Solution

• Composite API filtering
  In build-docs-targets-json.mjs, we treat StandardApi and ActionTargetApi as composite APIs: we never add them to the per-target apis array or to the API reverse mappings. We still expand them (via getNestedApis) so their constituent APIs are included. That keeps the POS targets JSON in line with the APIs we actually document.

• Output path logging
  The targets script now logs the full path where targets.json is written (e.g. when you run yarn docs:point-of-sale 2025-04), so it’s obvious where the file was generated.

🎩

• Run yarn docs:point-of-sale <API_VERSION> (e.g. 2025-04) and confirm the printed path is correct and targets.json is written there.
• Open the generated targets.json and confirm no target has ActionTargetApi or StandardApi in its apis array; only concrete APIs (CartApi, ScannerApi, etc.) appear.
• Confirm the API reverse-mapping section of the JSON has no ActionTargetApi or StandardApi keys.

Checklist

• I have 🎩'd these changes
• I have updated relevant documentation