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Establishes the first commit for graphlemon before U-001 work begins: architecture/SDD docs (including the PH5 self-hosting design already folded into 01-M/03-C/04-P/mvcp-contract v1.7.0), the A-1 spike results, the graphloop-adapted supervisor/isolation utilities, PH3 wireframe prototypes (now cross-referenced from 02-V), and this session's development-plan review (U-024 dependency split, U-035 regression requirement, new U-004.5 e2e-harness unit, src/ directory convention). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
