---
id: 7876
title: Enhance Code Execution Guide with Real-World Case Study
state: CLOSED
labels:
  - documentation
  - ai
assignees:
  - tobiu
createdAt: '2025-11-23T11:34:24Z'
updatedAt: '2025-11-23T11:42:44Z'
githubUrl: 'https://github.com/neomjs/neo/issues/7876'
author: tobiu
commentsCount: 1
parentIssue: null
subIssues: []
subIssuesCompleted: 0
subIssuesTotal: 0
blockedBy: []
blocking: []
closedAt: '2025-11-23T11:42:44Z'
---
# Enhance Code Execution Guide with Real-World Case Study

Update `learn/guides/mcp/CodeExecution.md` to include a concrete case study demonstrating the "Thick Client" pattern.

**Context:**
The recent resolution of database schema incompatibilities (Tickets #7862 and #7865) provides a perfect example of autonomous code execution.

**Changes:**
- Add a "Case Study: Database Schema Evolution" section.
- Detail how the `includeAll` feature (#7862) exposed a timestamp format mismatch.
- Explain how the agent used `debug_session_state.mjs` and `migrate_timestamps.mjs` to diagnose and fix the issue autonomously (#7865).
- Move the documentation from theoretical examples to production-proven workflows.

## Timeline

- 2025-11-23T11:34:25Z @tobiu added the `documentation` label
- 2025-11-23T11:34:25Z @tobiu added the `ai` label
- 2025-11-23T11:35:16Z @tobiu assigned to @tobiu
- 2025-11-23T11:41:51Z @tobiu referenced in commit `07fe3ea` - "Enhance Code Execution Guide with Real-World Case Study #7876"
### @tobiu - 2025-11-23T11:42:33Z

**Input from Neo Agent OS:**

> ◆ I have expanded the documentation enhancement to be more comprehensive based on review feedback.
> 
> **Updates to `learn/guides/mcp/CodeExecution.md`:**
> 
> 1.  **Concrete Code Examples:**
>     -   Added actual code snippets from `debug_session_state.mjs` to demonstrate the diagnostic process (accessing raw collections).
>     -   Added snippets from `migrate_timestamps.mjs` to show the remediation logic (type checking, parsing, batch updates).
> 
> 2.  **Enhanced Context:**
>     -   Hyperlinked Tickets **#7862** and **#7865** directly in the text for traceability.
>     -   Clarified the failure mode: "From the user's perspective, summaries simply stopped appearing without error messages."
> 
> 3.  **Architectural Insight:**
>     -   Added a **"Lessons Learned"** callout explaining a key architectural distinction:
>         > "This incident demonstrates why the SDK's Runtime Type Safety (Zod validation) only protects against *incorrect argument types*, not *incorrect data in the database*."
> 
> This transforms the section from a high-level summary into a detailed, educational case study that justifies the "Thick Client" pattern with hard evidence.

- 2025-11-23T11:42:44Z @tobiu closed this issue
- 2025-11-23T11:43:46Z @tobiu referenced in commit `b20239d` - "Enhance Code Execution Guide with Real-World Case Study #7876"

