validate unscIds

[nvmbrasserie]

Use UNSC ID validation to distinguish genuine UN IDs from Argentine national IDs

Problem

In ar_repet, we can't distinguish between:

• Genuine UN SC IDs: QDi.002, CDi.030 (7 chars, format: [REGIME][i/e].[NUM])
• Argentine national IDs: ArP.00234 (also 7-9 chars)

This causes invalid data in unscId field.

Solution

Implement proper UNSC ID validation using pattern ^[A-Z]{2,3}[ie]\.\d{3,}$ to:

• Accept only valid UN SC permanent reference numbers
• Reject ArP.XXXXX and other non-UN identifiers
• Prevent storing invalid data

[leonhandreke]

Could/should the class tolerate lowercase or missing dot or even normalize the result?

[nvmbrasserie]

I'd rather start on the stricter end and then soften it a bit if necessary. We'll have a good grasp of the data as soon as we roll it out. From what I've seen, it's either perfectly clean or completely broken

[leonhandreke]

Nice! I guess the alternative here would be to add a quick regex to ar_repet - but I feel the field is maybe important enough to build this into the infra. I don't have a strong opinion whether it should be in rigour or FtM, I guess it could be in the latter as well since it's not a well-specced official format but more of a convention?

[nvmbrasserie]

since we have other validators in rigour too, I think it's the most suitable place for it