feat: migrate metadata to nested structure for tac-quicksilver compatibility

[ChristopherJHart]

Summary

• Migrates metadata storage from flat fields to nested structure for compatibility with tac-quicksilver's Pydantic models
• Prevents metadata loss when Quicksilver loads YAML files (Pydantic ignores unknown flat fields)
• Adds helper functions get_nested_metadata() and set_nested_metadata() for safe nested access

New Nested Structure

metadata:
  project_tracking:
    issue_number: 123
    issue_url: https://...
    pr_number: 456
    pr_url: https://...
    pr_branch: feature/...
    git_url: https://...
  catalog_tracking:
    pr_number: 789
    pr_url: https://...
    pr_branch: feat/...
    git_url: https://...
  catalog:
    destined: true

Changes

Core Functions Updated:

• update_test_case_with_issue_metadata() → writes to metadata.project_tracking
• update_test_case_with_project_pr_metadata() → writes to metadata.project_tracking
• update_test_case_with_pr_metadata() → writes to metadata.catalog_tracking

Check Functions Updated:

• requires_issue_creation() → reads from metadata.project_tracking
• requires_project_pr_creation() → reads from metadata.project_tracking and metadata.catalog.destined
• requires_catalog_pr_creation() → reads from metadata.catalog_tracking and metadata.catalog.destined

Files Modified:

• github_ops_manager/processing/test_cases_processor.py - Main implementation
• github_ops_manager/synchronize/test_requirements.py - Consumer updates
• github_ops_manager/synchronize/pull_requests.py - Consumer updates
• github_ops_manager/configuration/cli.py - Docstring updates
• tests/unit/test_processing_test_cases_processor.py
• tests/unit/test_synchronize_test_requirements.py
• tests/unit/test_synchronize_issues_yaml_migration.py

Test plan

• All 330 unit tests pass
• Manual verification with tac-quicksilver loading the YAML files
• Integration testing with real test_cases.yaml files

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🤖 AI Generation Metadata

• AI Generated: Yes
• AI Tool: claude-code
• AI Model: opus-4
• AI Contribution: ~75%
• AI Reason: refactor metadata structure for tac-quicksilver compatibility

🤖 Generated with Claude Code