Add modules/contracts.md: Protobuf wire vs server-internal vs JSON Schema
content vs telemetry catalog; mapping Key contracts to kinds; proposed
contracts/ repo layout; versioning and Ready criteria.
Link from dependency register, decomposition README, tech_stack Related
docs; pointer from E9.M1 module doc.
Made-with: Cursor
Add nine module documents aligned with module_dependency_register rows
(E1.M1, E1.M2, E2.M2, E3.M2, E4.M4, E5.M1, E6.M1, E7.M1, E9.M1) with
purpose, contracts, dependencies, dependents, slices, and risks.
Link register and decomposition README to the new files; note E1.M3
as E5.M1 dependency without a register row yet.
Made-with: Cursor
VinPropane