Investigate multipart AJOK lisätiedot mapping for PDF generation

[asku1990]

Problem

Current 2023 AJOK PDF mapping ignores osa=b and osa=c rows for lisätieto koodit 25 and 27.

However, it is currently unclear whether:

• only osa=a should be rendered,
• values should be combined,
• values should render separately,
• or whether old AJOK logic intentionally ignored parts b/c.

KOIRATIETOKANTA payload examples contain:

• P25A1a
• P25A1b
• P25A1c
• P27A1a
• P27A1b
• P27A1c

Current implementation drops everything except a.

Goal

Investigate and document the correct behavior before changing canonical PDF mapping.

Investigation tasks

• Inspect old Beagle v1 AJOK PDF generator behavior for:
  • koodi 25
  • koodi 27
• Verify whether:
  • multipart values were combined,
  • rendered separately,
  • or partially ignored intentionally.
• Compare against:
  • current 2023 AJOK form,
  • Kennelliitto/SAJ instructions if available,
  • KOIRATIETOKANTA payload structure.
• Determine whether renderer layout can support:
  • combined values,
  • multiline values,
  • or separate coordinate fields.

Acceptance criteria

• Correct intended behavior for 25 and 27 is documented.
• Decision documented in issue comments or follow-up doc.
• If implementation change is required:
  • create follow-up implementation task.
• No schema changes in this task.
• No speculative implementation in this task.