Merge branch 'codex/feature-1'

# Conflicts:
#	docs/【玩法创作】平台入口与玩法链路-2026-05-15.md
#	src/components/platform-entry/PlatformEntryFlowShellImpl.tsx
#	src/components/rpg-entry/RpgEntryFlowShell.agent.interaction.test.tsx
#	src/services/miniGameDraftGenerationProgress.ts

server-rs/crates/api-server/src/state.rs

@@ -468,6 +468,45 @@ impl AppState {
         }
     }
 
+    /// 通过 SpacetimeDB 保存创作入口页多公告配置，并同步测试缓存。
+    pub async fn upsert_creation_entry_event_banners_config(
+        &self,
+        input: module_runtime::CreationEntryEventBannersAdminUpsertInput,
+    ) -> Result<CreationEntryConfigResponse, SpacetimeClientError> {
+        #[cfg(test)]
+        let test_event_banners_json = input.event_banners_json.clone();
+        match self
+            .spacetime_client
+            .upsert_creation_entry_event_banners_config(input)
+            .await
+        {
+            Ok(config) => {
+                #[cfg(test)]
+                self.cache_test_creation_entry_config(config.clone());
+                Ok(config)
+            }
+            #[cfg(test)]
+            Err(_) => {
+                let mut config = self.read_test_creation_entry_config();
+                if let Ok(banners) = module_runtime::decode_creation_entry_event_banner_snapshots(
+                    test_event_banners_json.as_str(),
+                ) {
+                    config.event_banners = banners
+                        .into_iter()
+                        .map(module_runtime::build_creation_entry_event_banner_response)
+                        .collect();
+                    if let Some(first_banner) = config.event_banners.first().cloned() {
+                        config.event_banner = first_banner;
+                    }
+                    self.cache_test_creation_entry_config(config.clone());
+                }
+                Ok(config)
+            }
+            #[cfg(not(test))]
+            Err(error) => Err(error),
+        }
+    }
+
     pub async fn get_creation_entry_config(
         &self,
     ) -> Result<CreationEntryConfigResponse, SpacetimeClientError> {