Merge pull request 'feat: 文章类型显示原文字数代替时间' (#1) from feature/article-word-count into main

Reviewed-on: http://192.168.1.22:8418/starmen1265/kb-web/pulls/1

dashboard.php

@@ -21,6 +21,7 @@ function parseMarkdownWithMeta($filePath) {
         'tags' => [],
         'duration' => '',
         'type' => 'article',
+        'word_count' => 0,
         'summary' => ''
     ];
     
@@ -47,6 +48,13 @@ function parseMarkdownWithMeta($filePath) {
         }
         if (preg_match('/^duration:\s*(.+?)\s*$/m', $yaml, $m)) {
             $meta['duration'] = trim($m[1]);
+        }
+        // 解析 type 字段
+        if (preg_match('/^type:\s*(.+?)\s*$/m', $yaml, $m)) {
+            $meta['type'] = trim($m[1]);
+        }
+        // 如果有 duration 但没有明确 type，则设为 video
+        if ($meta['duration'] && $meta['type'] === 'article') {
             $meta['type'] = 'video';
         }
         if (preg_match('/^tags:\s*\[(.+)\]\s*$/m', $yaml, $m)) {
@@ -55,6 +63,14 @@ function parseMarkdownWithMeta($filePath) {
             $meta['tags'] = $tagMatches[1] ?? [];
         }
         
+        // 计算正文字数（文章类型）
+        if ($meta['type'] === 'article') {
+            // 移除 Markdown 标记，计算纯文字字数
+            $plainText = strip_tags($body);
+            $plainText = preg_replace('/[#*_`\[\]()]/', '', $plainText);
+            $meta['word_count'] = mb_strlen(preg_replace('/\s+/', '', $plainText));
+        }
+        
         // 提取正文概述
         $lines = preg_split('/\r?\n/', trim($body));
         $summaryLines = [];
@@ -115,6 +131,7 @@ function scanDirectory($dir, $baseDir, $search) {
                 'tags' => $meta['tags'],
                 'duration' => $meta['duration'],
                 'type' => $meta['type'],
+                'word_count' => $meta['word_count'],
                 'summary' => $meta['summary']
             ];
         }
@@ -209,7 +226,9 @@ function getTypeIcon($type) {
                                 <?php if ($doc['author']): ?>
                                     <span class="meta-item">👤 <?php echo htmlspecialchars($doc['author']); ?></span>
                                 <?php endif; ?>
-                                <?php if ($doc['date']): ?>
+                                <?php if ($doc['type'] === 'article' && $doc['word_count'] > 0): ?>
+                                    <span class="meta-item">📝 <?php echo number_format($doc['word_count']); ?> 字</span>
+                                <?php elseif ($doc['date']): ?>
                                     <span class="meta-item">📅 <?php echo htmlspecialchars($doc['date']); ?></span>
                                 <?php endif; ?>
                                 <?php if ($doc['platform']): ?>