[ai] NBA models and Python contracts

Repo: · Issue: #985 Status: Open · Priority: P2 Assignee: Unassigned

Description

Define NBA request/response models as Python objects (Pydantic), with enums and Field docs for:

• recommendations
• action templates
• document intelligence
• triage rerank
• feedback Include versioned module layout (e.g., nba/v1) if needed.

Implementation Notes

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