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- §1 Business Context holds the whole business lens (1.1–1.9), solution-agnostic - §2 Solution Proposal introduces the chosen approach (and justifies build over a manual alternative); may be non-software in general - Renumber product/engineering lenses to §§3–7 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>