chore: unify log formatting

app/llm.js

@@ -1,11 +1,12 @@
 import axios from 'axios';
 import { getLLMConfig } from './config.js';
+import { line, error } from './log.js';
 
 export async function chat(systemPrompt, userContent) {
   const { provider, apiKeys, baseURL, model } = getLLMConfig();
   if (!provider) throw new Error('未設定任何 LLM API Key');
 
-  console.log(`  [LLM] provider=${provider} model=${model}`);
+  line(`[LLM] provider=${provider} model=${model}`);
 
   const headers = { 'Content-Type': 'application/json' };
   if (provider === 'claude') headers['anthropic-version'] = '2023-06-01';
@@ -21,10 +22,10 @@ export async function chat(systemPrompt, userContent) {
       );
       return resp.data.choices[0].message.content;
     } catch (e) {
-      console.log(`  [LLM] key[${i + 1}/${shuffled.length}] 失敗: ${e.message}`);
+      line(`[LLM] key[${i + 1}/${shuffled.length}] 失敗: ${e.message}`);
     }
   }
-  console.error('  [LLM] 所有 API Key 均失敗，終止流程');
+  error('[LLM] 所有 API Key 均失敗，終止流程');
   process.exit(1);
 }
 
@@ -33,7 +34,7 @@ export async function chatJSON(systemPrompt, userContent) {
   try {
     return JSON.parse(text.trim().replace(/^```[^\n]*\n?/, '').replace(/```$/, '').trim());
   } catch (e) {
-    console.log(`  [LLM] JSON 解析失敗: ${e.message}`);
+    line(`[LLM] JSON 解析失敗: ${e.message}`);
     return [];
   }
 }