Test Rust library generation with and without AzSDK Tools Agent

Run through generating a Rust SDK library both with and without the AzSDK Tools Agent to identify gaps in the agent's current capabilities.

## Description

Perform a comparative test of the Rust library generation workflow:
1. Generate a Rust library **without** the AzSDK Tools Agent (manual process)
2. Generate a Rust library **with** the AzSDK Tools Agent
3. Document the gaps, pain points, and areas where the agent falls short

This is a hands-on evaluation that must be done by a human to get real-world feedback on the developer experience.

Start by locating the Rust library generation workflow and the AzSDK Tools Agent entry point, then run the same generation process manually and with the agent. Record the gaps, pain points, and capability differences; the work is done when the comparative findings are documented clearly.

Written by the indexing model from the issue text.