feat(runtime): 即梦本机运行时 - 接入安全生成闭环与桌面本机渠道

Refs #225

Co-authored-by: zkhyww <127009345+zkhyww@users.noreply.github.com>

web/src/services/generation-artifact-sink.ts

@@ -0,0 +1,16 @@
+export async function loadOrStoreGenerationArtifact<TArtifact>(dependencies: {
+    effectKey: string;
+    read: (effectKey: string) => Promise<TArtifact | null>;
+    materialize: () => Promise<TArtifact>;
+    write: (effectKey: string, artifact: TArtifact) => Promise<void>;
+}): Promise<TArtifact> {
+    const existing = await dependencies.read(dependencies.effectKey);
+    if (existing) return existing;
+    const materialized = await dependencies.materialize();
+    await dependencies.write(dependencies.effectKey, materialized);
+    return (await dependencies.read(dependencies.effectKey)) ?? materialized;
+}
+
+export function generationArtifactStorageKey(effectKey: string, mediaType: "image" | "video" | "audio", scope = "local"): string {
+    return `generation-${mediaType}:${scope}:${encodeURIComponent(effectKey)}`;
+}