feat: async task pipeline for media and llm workflows

server/_core/env.ts

@@ -11,6 +11,7 @@ const parseBoolean = (value: string | undefined, fallback: boolean) => {
 
 export const ENV = {
   appId: process.env.VITE_APP_ID ?? "",
+  appPublicBaseUrl: process.env.APP_PUBLIC_BASE_URL ?? "",
   cookieSecret: process.env.JWT_SECRET ?? "",
   databaseUrl: process.env.DATABASE_URL ?? "",
   oAuthServerUrl: process.env.OAUTH_SERVER_URL ?? "",
@@ -27,7 +28,22 @@ export const ENV = {
   llmApiKey:
     process.env.LLM_API_KEY ?? process.env.BUILT_IN_FORGE_API_KEY ?? "",
   llmModel: process.env.LLM_MODEL ?? "gemini-2.5-flash",
+  llmVisionApiUrl:
+    process.env.LLM_VISION_API_URL ??
+    process.env.LLM_API_URL ??
+    (process.env.BUILT_IN_FORGE_API_URL
+      ? `${process.env.BUILT_IN_FORGE_API_URL.replace(/\/$/, "")}/v1/chat/completions`
+      : ""),
+  llmVisionApiKey:
+    process.env.LLM_VISION_API_KEY ??
+    process.env.LLM_API_KEY ??
+    process.env.BUILT_IN_FORGE_API_KEY ??
+    "",
+  llmVisionModel: process.env.LLM_VISION_MODEL ?? process.env.LLM_MODEL ?? "gemini-2.5-flash",
   llmMaxTokens: parseInteger(process.env.LLM_MAX_TOKENS, 32768),
   llmEnableThinking: parseBoolean(process.env.LLM_ENABLE_THINKING, false),
   llmThinkingBudget: parseInteger(process.env.LLM_THINKING_BUDGET, 128),
+  mediaServiceUrl: process.env.MEDIA_SERVICE_URL ?? "",
+  backgroundTaskPollMs: parseInteger(process.env.BACKGROUND_TASK_POLL_MS, 3000),
+  backgroundTaskStaleMs: parseInteger(process.env.BACKGROUND_TASK_STALE_MS, 300000),
 };