Following the major architectural changes in #9012 (Fixed-DOM-Order Row Pooling, Split Dataset Strategy), the current documentation in the Grid subsystem is outdated.

To ensure future maintainability and enable the AI Knowledge Base to correctly index these patterns, we need to apply the Knowledge Base Enhancement Strategy to:

1. Neo.grid.Body: Explain the "Fixed-DOM-Order" pooling strategy (recycling rows in-place via transforms).
2. Neo.grid.Row: Document the "Split Dataset" strategy (data-record-id, data-field) and its role in event delegation.
3. Neo.selection.grid.BaseModel: Document the granular update logic and interaction with the pooling mechanism.

Goal: Add rich, intent-driven JSDoc that explains why these patterns exist, improving semantic search for the AI.