feat(skills): auto-tag+classify existing 60 skills, auto-tag on import, 409 uniqueness check, add tags column to admin

frontend/src/pages/admin/Skills.tsx

@@ -398,6 +398,7 @@ const Skills: React.FC = () => {
               <th>技能名称</th>
               <th>状态</th>
               <th>分类</th>
+              <th>标签</th>
               <th>所有者</th>
               <th>版本</th>
               <th>使用次数</th>
@@ -408,9 +409,9 @@ const Skills: React.FC = () => {
           </thead>
           <tbody>
             {loading ? (
-              <tr><td colSpan={9} style={{ textAlign: 'center', padding: 40, color: '#6B7280' }}>加载中...</td></tr>
+              <tr><td colSpan={10} style={{ textAlign: 'center', padding: 40, color: '#6B7280' }}>加载中...</td></tr>
             ) : skills.length === 0 ? (
-              <tr><td colSpan={9} style={{ textAlign: 'center', padding: 40, color: '#6B7280' }}>暂无技能</td></tr>
+              <tr><td colSpan={10} style={{ textAlign: 'center', padding: 40, color: '#6B7280' }}>暂无技能</td></tr>
             ) : skills.map(skill => {
               const cfg = STATE_CONFIG[skill.state as SkillState] || STATE_CONFIG.baby;
               const published = isPublished(skill);
@@ -441,6 +442,16 @@ const Skills: React.FC = () => {
                     </span>
                   </td>
                   <td>{skill.category_label || '-'}</td>
+                  <td>
+                    {skill.tags && skill.tags.length > 0 ? (
+                      <div style={{ display: 'flex', gap: 4, flexWrap: 'wrap' }}>
+                        {skill.tags.slice(0, 3).map(tag => (
+                          <span key={tag} style={{ fontSize: 11, padding: '1px 6px', background: '#EEF2FF', color: '#6366F1', borderRadius: 4 }}>{tag}</span>
+                        ))}
+                        {skill.tags.length > 3 && <span style={{ fontSize: 11, color: '#6B7280' }}>+{skill.tags.length - 3}</span>}
+                      </div>
+                    ) : <span style={{ color: '#9CA3AF', fontSize: 12 }}>-</span>}
+                  </td>
                   <td>{skill.owner_username || skill.user_id}</td>
                   <td>v{skill.version}</td>
                   <td>{skill.use_count}</td>