[WIP] Analyze repository for sovereign cloud landing zone expansion

[Copilot]

• Explore repository structure and all target directories
• Read all sovereign cloud challenge solutions (1-6)
• Read all PowerShell scripts (subscription prep, cleanup, demo-vm-creator)
• Read BCDR Bicep modules and deployment scripts
• Read GitHub Actions workflow and CI/CD files
• Read CHALLENGES_ANALYSIS.md
• Create comprehensive analysis document with all 9 sections
• Phase 1: Full Repository Inventory
• Phase 2: Sovereign Cloud Deep Dive
• Phase 3: Reuse Catalog
• Phase 4: Bicep Module Recommendations (7 modules)
• Phase 5: GitHub Actions Pipeline (deploy-sovereign-lz.yml)
• Phase 6: Repository Structure Recommendation
• Gaps, Risks, and Next Steps
• Run code review
• Run CodeQL security check

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