chore: strengthen deployment steps

[Shreyas-Microsoft]

Purpose

This pull request significantly improves the deployment documentation by restructuring the README.md and DeploymentGuide.md for better clarity, usability, and troubleshooting. The main enhancements include clearer prerequisites and permissions, a dedicated troubleshooting section, detailed cost estimation, robust environment management guidance, and a comprehensive post-deployment validation checklist. These changes are designed to make the deployment process smoother and help users quickly resolve common issues.

Documentation Restructuring & Usability Improvements:

• Added a "Quick Start" section and reorganized the DeploymentGuide.md to provide a step-by-step deployment overview, including a clear checklist for prerequisites and deployment validation. [1] [2]
• Updated the permissions guidance to recommend "Owner" and "User Access Administrator" roles, with a comparison table for least-privilege alternatives and links to detailed setup instructions. [1] [2]

Troubleshooting & Common Issues:

• Introduced a new troubleshooting section in both the README.md and DeploymentGuide.md, highlighting 25+ common deployment issues and quick solutions, with direct links to a dedicated troubleshooting guide. [1] [2]

Cost Estimation & Regional Guidance:

• Moved and expanded the cost estimation and regional availability information into a dedicated section in the deployment guide, including a detailed pricing table for all major Azure services used. [1] [2]

Environment Management Enhancements:

• Added explicit instructions for environment naming, recreation, and cleanup, including PowerShell scripts for generating compliant names and cleaning up old environments to avoid deployment conflicts. [1] [2]

Post-Deployment Validation & Golden Path Workflows:

• Introduced a comprehensive deployment validation checklist, health check commands, and troubleshooting steps to ensure successful deployment.
• Added "Golden Path Workflows" and next steps guidance for users to follow best practices and explore advanced solution features.

These improvements should make the deployment process more reliable and user-friendly, helping both new and experienced users avoid common pitfalls and get the most out of the solution.

Does this introduce a breaking change?

• Yes
• No

Golden Path Validation

• I have tested the primary workflows (the "golden path") to ensure they function correctly without errors.

Deployment Validation

• I have validated the deployment process successfully and all services are running as expected with this change.

What to Check

Verify that the following are valid

• ...

Other Information