Expand documentation to describe the current local networking prototype and its protocol. Adds a Current Architecture section and Fake Client responsibilities, clarifies that the Fallout 4 plugin currently only sends transforms (no receive loop yet), and documents implemented message types (welcome, transform, disconnect) with packet field descriptions and examples. Update player-sync and packets docs to reflect movementType, server/client timestamps, and the in-memory remote player state model used by server/fake_client.py. Flesh out server/README with run/test flow and implemented behavior. Revise dev-log with milestone entries, testing notes, and an entry template for future updates.