Seeds the entity graph from existing project state, memories, and
vault docs across p04-gigabit (11 entities), p05-interferometer (10),
and p06-polisher (14). Covers systems, subsystems, components,
materials, decisions, requirements, constraints, vendors, and
parameters with structural and intent relationships.
Example: GET /entities/{M1 Mirror Assembly id} returns the full
context — 4 subsystems it contains, 2 requirements it's constrained
by, and the parent project — traversable in one API call.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
