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/events.rs

@@ -0,0 +1,23 @@
+//! 跳一跳领域事件。
+//!
+//! 事件只表达已发生的领域事实，是否持久化、投影或广播由 SpacetimeDB adapter 决定。
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum JumpHopDomainEvent {
+    DraftCompiled {
+        profile_id: String,
+        owner_user_id: String,
+        occurred_at_micros: i64,
+    },
+    WorkPublished {
+        profile_id: String,
+        owner_user_id: String,
+        occurred_at_micros: i64,
+    },
+    RunSettled {
+        run_id: String,
+        owner_user_id: String,
+        status: String,
+        occurred_at_micros: i64,
+    },
+}