Add modules/client_server_authority.md: default server truth for
persistence/economy/combat; intents vs state table; E1.M1–E1.M4 and
E5.M1 ownership; economy/quest/zone/PvP blanket; deferred tick rate
and lag comp.
Link from contracts.md, register, decomposition README, tech_stack;
one-line Authority pointers in E1_M1, E1_M2, E5_M1. Fix contracts.md
baseline link formatting.
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