feat(backend): update collections, config and migration tools

Update Payload CMS configuration, collections (Audit, Posts), and add migration scripts/reports.

apps/backend/scripts/migration/test-csv.ts

@@ -0,0 +1,46 @@
+#!/usr/bin/env tsx
+/**
+ * Test CSV Parser (No MongoDB required)
+ */
+
+import { parseWebflowCSV } from './csvParser'
+import { Logger } from './utils'
+
+const logger = new Logger(true)
+
+async function main() {
+  const csvPath = process.argv[2] || '../../恩群數位行銷 - 行銷放大鏡集 - 61f24aa108528b279f942ca9.csv'
+
+  logger.header('🧪 Testing CSV Parser')
+  logger.info(`File: ${csvPath}`)
+
+  try {
+    const data = await parseWebflowCSV(csvPath)
+
+    logger.success(`✓ CSV parsed successfully!`)
+    logger.info(`Posts: ${data.posts?.length || 0}`)
+    logger.info(`Categories: ${data.categories?.length || 0}`)
+    logger.info(`Portfolio: ${data.portfolio?.length || 0}`)
+
+    if (data.categories && data.categories.length > 0) {
+      logger.info('\n📋 Categories found:')
+      for (const cat of data.categories) {
+        logger.info(`  - ${cat.name} (${cat.slug}) - ${cat.colorHex}`)
+      }
+    }
+
+    if (data.posts && data.posts.length > 0) {
+      logger.info('\n📝 First 5 posts:')
+      for (const post of data.posts.slice(0, 5)) {
+        logger.info(`  - [${post.postCategory || 'uncategorized'}] ${post.title}`)
+        logger.debug(`    Slug: ${post.slug}`)
+        logger.debug(`    Date: ${post.publishedDate}`)
+      }
+    }
+
+  } catch (error) {
+    logger.error(`Error: ${error}`)
+  }
+}
+
+main()