Add blast radius analysis for SampleApp (SAM)

[Copilot]

Analyzed dependencies, failure modes, and impact scope of the SampleApp microservices architecture. Created structured documentation for change risk assessment.

Analysis Deliverable

blast-radius.md - 14KB structured analysis covering:

• Architecture: FrontEnd (Blazor/8081) → BackEnd (API/8080) unidirectional HTTP dependency
• Failure Impact: Backend SPOF with no circuit breaker; frontend has no fallback
• Dependencies: .NET 9.0, 2 NuGet packages (OpenAPI, Scalar), Codespaces infrastructure
• Risk Profile: MEDIUM overall - tight coupling without resilience patterns
• Change Impact Matrix: Cross-component effect mapping for common change scenarios
• Mitigation Gaps: Missing health checks, error handling, observability, retry logic

Key Metrics

• 2 services, 12 source files
• 0 redundancy layers
• 1 critical dependency path
• 6 configuration touch points

Risk rating reflects development/demo maturity - requires hardening for production deployment.

Original prompt

Find blast radius of 'SAM' using graph MCP tool and then write a summary using .md format

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