Fix DashScope env loading for scene image generation

src/services/llmClient.ts

@@ -9,6 +9,7 @@ const ENABLE_LLM_DEBUG_LOG = Boolean(ENV.DEV) || ENV.VITE_LLM_DEBUG_LOG === 'tru
 export interface PlainTextCompletionOptions {
   timeoutMs?: number;
   debugLabel?: string;
+  signal?: AbortSignal;
 }
 
 export class LlmConnectivityError extends Error {
@@ -71,7 +72,9 @@ async function requestMessageContent(
 ) {
   const timeoutMs = options.timeoutMs ?? REQUEST_TIMEOUT_MS;
   const debugLabel = options.debugLabel ?? 'chat';
+  const externalSignal = options.signal;
   const controller = new AbortController();
+  const handleExternalAbort = () => controller.abort();
   const timeout = setTimeout(() => controller.abort(), timeoutMs);
   const startedAt = performance.now();
   const requestBody = {
@@ -83,6 +86,16 @@ async function requestMessageContent(
   };
   const rawPromptText = `[System]\n${systemPrompt}\n\n[User]\n${userPrompt}`;
 
+  if (externalSignal) {
+    if (externalSignal.aborted) {
+      handleExternalAbort();
+    } else {
+      externalSignal.addEventListener('abort', handleExternalAbort, {
+        once: true,
+      });
+    }
+  }
+
   try {
     logLlmDebug(`[LLM:${debugLabel}] prompt text`, rawPromptText);
 
@@ -119,6 +132,11 @@ async function requestMessageContent(
 
     return content.trim();
   } catch (error) {
+    if (externalSignal?.aborted) {
+      throw externalSignal.reason instanceof Error
+        ? externalSignal.reason
+        : new DOMException('The LLM request was aborted.', 'AbortError');
+    }
     console.error(`[LLM:${debugLabel}] completion failed`, {
       model: MODEL,
       elapsedMs: Math.round(performance.now() - startedAt),
@@ -128,6 +146,7 @@ async function requestMessageContent(
     return normalizeLlmError(error);
   } finally {
     clearTimeout(timeout);
+    externalSignal?.removeEventListener('abort', handleExternalAbort);
   }
 }