Enforce Genarrative play-type SOP and update docs

Rewrite Genarrative play-type integration guidance across .codex and .hermes to define a platform-level SOP: default to form/image workbench, unify single-image asset slots (CreativeImageInputPanel), standardize series-material sheet->cut->transparent->OSS pipeline, and forbid copying legacy chat/agent workflows as the default. Add decision-log entry freezing the SOP and a pitfalls note warning against direct reuse of old play tools. Update CONTEXT.md and docs/README.md, add a new PRD file, and apply related small server-side changes (module-auth, spacetime-client mappers and runtime) to align back-end code with the new contracts and flows.

server-rs/crates/module-jump-hop/src/lib.rs

@@ -0,0 +1,11 @@
+mod application;
+mod commands;
+mod domain;
+mod errors;
+mod events;
+
+pub use application::*;
+pub use commands::*;
+pub use domain::*;
+pub use errors::*;
+pub use events::*;