[WIP] add comments to azure pipelines

[Copilot]

Adding comprehensive comments to Azure Pipeline files to improve maintainability and understanding.

Plan:

• Explore repository structure and understand existing Azure Pipeline files
• Analyze current state of stable.yml, pre-release.yml, and playground.yml
• Build project to ensure it's in working state
• Add header comments explaining purpose of each pipeline
• Add section comments for major configuration blocks
• Add inline comments for key configuration parameters
• Ensure consistency across all three pipeline files
• Review and validate all changes

Changes Made:

stable.yml

• Added comprehensive header explaining this is for stable releases
• Documented trigger configuration (manual only)
• Explained security requirements (signing, TSA, API scan)
• Added detailed comments for all build targets explaining architecture coverage
• Documented Azure build configuration setup

pre-release.yml

• Added header explaining this is for pre-release builds from main branch
• Documented automatic triggering on main branch commits
• Explained security configuration for pre-release distribution
• Added platform target explanations consistent with stable pipeline
• Documented relationship to VS Code insider builds

playground.yml

• Added header explaining this is for development/testing purposes
• Documented manual-only execution for testing
• Explained relaxed security (no signing, no TSA) for development use
• Added platform target comments for testing coverage
• Clarified that no artifacts are published to feeds

Validation:

• ✅ All YAML files validated for syntax correctness
• ✅ Project builds successfully after changes
• ✅ Only comments added, no functional changes made
• ✅ Consistent comment style across all three files

The Azure Pipeline files now have comprehensive documentation explaining their purpose, configuration differences, security requirements, and target platforms, making them much more maintainable for the team.

Created from VS Code via the GitHub Pull Request extension.

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