v2 - 2026-02-20 - Notes search and relationship filtering

Search notes Added endpoint for filtered search over notes with support for relationship-based filtering by customers and links
List relationships Added type and target[type] query parameters to filter relationships by type and target entity type
Renamed endpoint summaries for consistency: "Retrieve note" → "Get note", "Retrieve relationships" → "List relationships", "Delete note relationship" → "Delete relationship"