chore: Dev to Main merge

[Ragini-Microsoft]

Purpose

This pull request introduces several improvements and refactors across the infrastructure, documentation, and environment configuration for the Content Generation solution accelerator. The main focus is on standardizing parameter names, updating module versions for improved reliability and features, and clarifying documentation for post-deployment and technical guidance. The most important changes are grouped below:

Parameter and Environment Variable Standardization:

• Refactored parameter and environment variable names for GPT and image models, Cosmos DB, and storage accounts throughout documentation (docs/CustomizingAzdParameters.md, .env.sample, docs/TECHNICAL_GUIDE.md). This ensures consistent naming across deployment, configuration, and code. [1] [2] [3] [4]

Infrastructure Module and Resource Updates:

• Upgraded AVM Bicep module versions for Log Analytics Workspace, User Assigned Identity, Private DNS Zones, AI Services, Private Endpoint, and AI Search to latest releases, improving stability and feature set (infra/main.bicep). [1] [2] [3] [4] [5]
• Changed AI Search replica count from 2 to 3 when redundancy is enabled and updated hostingMode value to 'Default' for clarity and correctness (infra/main.bicep).
• Updated API version for AI Search Foundry connection resource to 2025-09-01 for future compatibility (infra/main.bicep).

Resource Tagging and Telemetry Improvements:

• Improved resource group tag handling by referencing the existing resource group and updating tags API version, ensuring tags are preserved and managed correctly (infra/main.bicep). [1] [2]
• Added enableTelemetry parameter propagation to more modules, clarifying its scope and improving telemetry control (infra/main.bicep). [1] [2]

Documentation Enhancements:

• Added a new comprehensive AVM Post Deployment Guide (docs/AVMPostDeploymentGuide.md) detailing manual post-deployment steps, prerequisites, and verification checks for AVM-based deployments.
• Clarified technical guide settings and parameter names for easier developer onboarding and troubleshooting (docs/TECHNICAL_GUIDE.md).

Minor Fixes and Improvements:

• Made acrName parameter optional and clarified telemetry parameter descriptions for improved user experience (infra/main.bicep).
• Fixed dependency logic for virtual network deployment to avoid unnecessary dependencies when using existing Log Analytics workspace (infra/main.bicep).
• Corrected data types for Log Analytics workspace quota and improved descriptions for module parameters (infra/main.bicep).

These changes collectively improve deployment reliability, configuration consistency, and user guidance for the solution accelerator.

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.