feat: extend GEMINI_API_KEY support to include additional keys and update suggestions in exclusions.json

app/llm.js

@@ -11,7 +11,6 @@ export async function chat(systemPrompt, userContent) {
   if (provider === 'claude') headers['anthropic-version'] = '2023-06-01';
 
   const shuffled = [...apiKeys].sort(() => Math.random() - 0.5);
-  let lastError;
   for (let i = 0; i < shuffled.length; i++) {
     if (provider !== 'ollama') headers['Authorization'] = `Bearer ${shuffled[i]}`;
     try {
@@ -22,7 +21,6 @@ export async function chat(systemPrompt, userContent) {
       );
       return resp.data.choices[0].message.content;
     } catch (e) {
-      lastError = e;
       console.log(`  [LLM] key[${i + 1}/${shuffled.length}] 失敗: ${e.message}`);
     }
   }