chore: refine stage 7 json validation

app/main.js

@@ -1,4 +1,3 @@
-import fs from 'fs';
 import path from 'path';
 import { GITEA_REPOSITORY, PR_NUMBER, PR_HEAD_BRANCH, PR_BASE_BRANCH, getLLMConfig, FINDINGS_PATH, EXCLUSIONS_PATH } from './config.js';
 import { loadRoles, getRoleIntro } from './roles.js';
@@ -6,6 +5,7 @@ import { getPRDiff, postComment } from './gitea.js';
 import { analyzeWithRole, loadOldFindings, mergeFindings, sortByLevel, deduplicateWithAI, loadExclusions, applyExclusions, filterFalsePositivesWithAI } from './findings.js';
 import { saveFindings, postOldFindingsComment, postNewNonCriticalComment, postNewCriticalComments } from './comments.js';
 import { cloneRepo, commitAndPush } from './git.js';
+import { validateJSONArrayFile, ensureJSONArrayFileExists } from './json.js';
 
 const WORKSPACE = process.env.GITHUB_WORKSPACE || '/workspace';
 
@@ -100,29 +100,21 @@ async function main() {
 
   // Step7: 驗證 findings.json 與 exclusions.json 為合法 JSON
   console.log('\n🔎 Step6: JSON 格式驗證');
+  const missingPaths = [];
   for (const relPath of [FINDINGS_PATH, EXCLUSIONS_PATH]) {
     const fullPath = path.join(repoDir || WORKSPACE, relPath);
-    if (!fs.existsSync(fullPath)) {
-      console.log(`  ⚠️  ${relPath} 不存在，跳過驗證`);
-      continue;
-    }
     try {
-      JSON.parse(fs.readFileSync(fullPath, 'utf8'));
-      console.log(`  ✅ ${relPath} JSON 格式正確`);
-    } catch (e) {
-      console.error(`  ❌ ${relPath} JSON 格式錯誤: ${e.message}，嘗試修正...`);
-      try {
-        const backupPath = fullPath + '.bak';
-        fs.copyFileSync(fullPath, backupPath);
-        fs.writeFileSync(fullPath, '[]\n', 'utf8');
-        console.log(`  ✅ ${relPath} 已重置為空陣列（原檔備份至 ${relPath}.bak）`);
-      } catch (repairErr) {
-        console.error(`  ❌ ${relPath} 修正失敗: ${repairErr.message}`);
-        process.exit(1);
-      }
+      const result = await validateJSONArrayFile(fullPath, relPath);
+      if (!result.exists) missingPaths.push({ fullPath, relPath });
+    } catch {
+      process.exit(1);
     }
   }
 
+  for (const { fullPath, relPath } of missingPaths) {
+    ensureJSONArrayFileExists(fullPath, relPath);
+  }
+
   // Step7: commit/push findings.json 到來源分支
   console.log('\n💾 Step7: 記憶區 Commit/Push');
   await commitAndPush(WORKSPACE, repoDir);