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-runtime/src/application.rs

@@ -94,6 +94,17 @@ pub fn default_creation_entry_type_snapshots(
             40,
             updated_at_micros,
         ),
+        build_default_creation_entry_type_snapshot(
+            "jump-hop",
+            "跳一跳",
+            "俯视角跳跃闯关",
+            "可创建",
+            "/creation-type-references/puzzle.webp",
+            true,
+            true,
+            45,
+            updated_at_micros,
+        ),
         build_default_creation_entry_type_snapshot(
             "square-hole",
             "方洞",