fix: InitWizard AI suggestions — use correct proxy URL, handle Ollama response format, add JSON parse safety

src/app/features/novel-writer/components/InitWizard.tsx

@@ -143,11 +143,13 @@ async function callAiSuggestions<T>(
 ): Promise<T[]> {
   if (!apiSettings) throw new Error('API 未配置');
 
+  const isOllama = apiSettings.apiUrl.includes('11434') || apiSettings.apiUrl.includes('ollama');
+
   const res = await fetch('/api/proxy', {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
     body: JSON.stringify({
-      targetUrl: `${apiSettings.apiUrl.replace(/\/$/, '')}/chat/completions`,
+      targetUrl: apiSettings.apiUrl,
       headers: {
         Authorization: `Bearer ${apiSettings.apiKey}`,
         'Content-Type': 'application/json',
@@ -161,6 +163,7 @@ async function callAiSuggestions<T>(
         temperature: 0.8,
         stream: false,
       },
+      isOllama,
     }),
   });
 
@@ -170,14 +173,18 @@ async function callAiSuggestions<T>(
   }
 
   const data = await res.json();
-  if (data.error) throw new Error(data.error.message || 'AI 请求失败');
+  if (data.error) throw new Error(data.error.message || data.error.detail || 'AI 请求失败');
 
-  const content = data.choices?.[0]?.message?.content;
+  const content = data.choices?.[0]?.message?.content || data.response || data.content;
   if (!content) throw new Error('AI 返回内容为空');
 
   // Strip possible markdown code fence around JSON
   const cleaned = content.replace(/```(?:json)?\n?/g, '').trim();
-  return JSON.parse(cleaned) as T[];
+  try {
+    return JSON.parse(cleaned) as T[];
+  } catch {
+    throw new Error('AI 返回了无效的 JSON，请重试');
+  }
 }
 
 // ─── Step 1: Novel Type ──────────────────────────────────────────────────────