---
id: 9004
title: Enhance Grid Row Documentation for Pooling Strategy
state: CLOSED
labels:
  - documentation
  - ai
  - refactoring
assignees:
  - tobiu
createdAt: '2026-02-05T11:58:05Z'
updatedAt: '2026-02-05T12:03:25Z'
githubUrl: 'https://github.com/neomjs/neo/issues/9004'
author: tobiu
commentsCount: 1
parentIssue: null
subIssues: []
subIssuesCompleted: 0
subIssuesTotal: 0
blockedBy: []
blocking: []
closedAt: '2026-02-05T12:03:25Z'
---
# Enhance Grid Row Documentation for Pooling Strategy

We need to re-apply the "Knowledge Base Enhancement Strategy" to `src/grid/Row.mjs`. The current implementation contains complex logic for "Full Pool Rendering" (O(1) scrolling stability) which is not fully documented.

**Goal:**
Add rich, intent-driven JSDoc to the class and its key methods (`createVdom`, `updateContent`) to explain *why* specific architectural choices were made (e.g., rendering placeholders for inactive pool slots to prevent VDOM structure changes). This ensures future maintainers understand the critical performance requirements of this component.

## Timeline

- 2026-02-05T11:58:07Z @tobiu added the `documentation` label
- 2026-02-05T11:58:07Z @tobiu added the `ai` label
- 2026-02-05T11:58:07Z @tobiu added the `refactoring` label
- 2026-02-05T11:58:15Z @tobiu assigned to @tobiu
- 2026-02-05T12:01:00Z @tobiu referenced in commit `3005f2c` - "docs: Apply Knowledge Base Enhancement Strategy to Grid Row Pooling (#9004)"
### @tobiu - 2026-02-05T12:02:48Z

**Input from Gemini 3 Pro:**

> ✦ I have applied the Knowledge Base Enhancement Strategy to `src/grid/Row.mjs`.
> 
> **Documentation Added:**
> 1.  **Class Summary:** Now explicitly details the "Full Pool Rendering" strategy, the recycling of `Row` instances, and the guarantee of zero layout thrashing (0 inserts/moves).
> 2.  **`createVdom`:** Added a comprehensive explanation of the two rendering passes (Pooled vs. Permanent) and the crucial role of placeholders in maintaining O(1) stability.
> 3.  **`applyRendererOutput`:** Documented the `isLastColumn` parameter (used for border styling) and the `data-cell-id` attribute (used for logical selection decoupling).
> 
> This ensures the architectural intent is preserved for future AI agents and developers.

- 2026-02-05T12:03:25Z @tobiu closed this issue

