Establish build time baseline measurements

Description

Measure and document current staging build times for both AMD64 and AARCH64 architectures before implementing caching optimizations to establish a performance baseline for comparison

Acceptance Criteria

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• #1 Baseline build times are measured for at least 3 consecutive AMD64 builds,Baseline build times are measured for at least 3 consecutive AARCH64 builds,Average build time and GitHub Actions minutes consumption are documented,Baseline measurements include both cold builds and any existing warm builds,Results are documented in a format suitable for comparing against post-optimization builds

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