Verify issue #47: CI JSON schema already includes "r" key for region coordinates

[Copilot]

Issue #47 reported the CI JSON schema was missing the "r" key for region coordinates in ppreb. Investigation confirms this is already fixed in the current codebase.

Verification

• Schema: json/rebuilt/paper_contentitem.schema.json lines 176-188 define the "r" key
• Examples: Both example0.json and SOC_VS-1943-04-28-a-i0001.json contain valid "r" data
• Tests: All 34 schema validation tests pass

"r": {
    "description": "List of region coordinates.",
    "type": "array",
    "items": {
        "type": "array",
        "maxItems": 4,
        "minItems": 4,
        "items": { "type": "integer" }
    }
}

No changes needed. Issue #47 can be closed.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Incomplete CI JSON schema</issue_title>
<issue_description>I found out that the JSON schema for CI in rebuilt JSON misses the "r" key for the regions coordinates in "ppreb" but it present in the true rebuilt files.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Incomplete CI JSON schema #47

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.