Adds SDA as a new asset type for License claim translations supporting
the EOL (External Legal Opinion) workflow.
- SDA maps to externallegalopinion in DAM (same as EOL).
- Field overrides match EOL (Agency = "-", Prod Company = "-",
Languages = Global, IP Right = Yes, Licensing = No, validity dates
removed) plus a fixed Description: "Translation of License claim -
For approval purposes only".
- Added asset_type_overrides section to field_mappings_ppr.yaml; it
was missing, so EOL overrides weren't actually applying on PPR.
Both EOL and SDA blocks are now defined for both PPR and PROD.
- _apply_asset_type_overrides now appends a simple string field when
the override targets a field not yet in mvp_fields, so the SDA
description is set even if the filename has no subject_title.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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