~anthropic/claude-sonnet-latest → B (97:3)

Side A merely deletes a speculative, AI-generated design markdown file with no code impact, contributing nothing functional. Side B is a substantive refactor that separates canonical-path normalization from identity parsing, fixes wire-format inconsistencies (stripping '@' from stored identifiers), makes delegate optional, and updates code, tests, and integration scripts consistently across the codebase.