feat: v4.0 - 添加 Skills 管理功能

- 新增 Skill 模型，支持手动添加和 GitHub 抓取
- 后台添加 Skills 管理界面
- 前台添加 /skills 列表页和 /skills/<slug> 详情页
- 首页增加 Skills Tab 入口
- 添加数据库迁移脚本

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -11,7 +11,7 @@ from flask_admin.contrib.sqla import ModelView
 from wtforms import fields
 from datetime import datetime, timedelta
 from config import config
-from models import db, Site, Tag, Admin as AdminModel, News, site_tags, PromptTemplate, User, Folder, Collection, ApiKey
+from models import db, Site, Tag, Admin as AdminModel, News, site_tags, PromptTemplate, User, Folder, Collection, ApiKey, Skill
 from utils.website_fetcher import WebsiteFetcher
 from utils.tag_generator import TagGenerator
 from utils.news_searcher import NewsSearcher
@@ -173,6 +173,41 @@ def create_app(config_name='default'):
                              pagination=pagination, tag_counts=tag_counts,
                              current_tab=current_tab)
 
+    # ========== Skills 前台路由 ==========
+    @app.route('/skills')
+    def skills_list():
+        """Skills 列表页"""
+        page = request.args.get('page', 1, type=int)
+        per_page = 20
+
+        # 获取推荐的和所有的 Skills
+        featured_skills = Skill.query.filter_by(is_active=True, is_featured=True).order_by(Skill.sort_order.desc()).all()
+        pagination = Skill.query.filter_by(is_active=True).order_by(Skill.sort_order.desc(), Skill.created_at.desc()).paginate(
+            page=page, per_page=per_page, error_out=False
+        )
+
+        return render_template('skills/list.html',
+                             featured_skills=featured_skills,
+                             skills=pagination.items,
+                             pagination=pagination)
+
+    @app.route('/skills/<slug>')
+    def skill_detail(slug):
+        """Skill 详情页"""
+        skill = Skill.query.filter_by(slug=slug, is_active=True).first_or_404()
+
+        # 更新浏览次数
+        try:
+            db.session.execute(
+                db.text("UPDATE skills SET view_count = view_count + 1 WHERE id = :id"),
+                {"id": skill.id}
+            )
+            db.session.commit()
+        except:
+            db.session.rollback()
+
+        return render_template('skills/detail.html', skill=skill)
+
     @app.route('/site/<code>')
     def site_detail(code):
         """网站详情页 - v3.1性能优化"""
@@ -3380,6 +3415,71 @@ Sitemap: {}sitemap.xml
                 db.orm.joinedload(News.site)
             )
 
+    # Skills管理视图
+    class SkillAdmin(SecureModelView):
+        can_edit = True
+        can_delete = True
+        can_create = True
+        can_view_details = False
+        can_set_page_size = True
+        page_size = 20
+
+        column_display_actions = True
+
+        column_list = ['id', 'name', 'slug', 'short_desc', 'source_type', 'is_active', 'is_featured', 'view_count', 'created_at']
+        column_default_sort = ('created_at', True)
+        column_searchable_list = ['name', 'slug', 'description']
+        column_filters = ['is_active', 'is_featured', 'source_type']
+        column_labels = {
+            'id': 'ID',
+            'name': 'Skill名称',
+            'slug': 'URL别名',
+            'short_desc': '简短描述',
+            'description': '详细介绍',
+            'logo': 'Logo',
+            'github_url': 'GitHub链接',
+            'source_type': '来源类型',
+            'source_repo': '来源仓库',
+            'usage': '使用方法',
+            'examples': '使用示例',
+            'is_active': '是否启用',
+            'is_featured': '是否推荐',
+            'view_count': '浏览次数',
+            'sort_order': '排序权重',
+            'created_at': '创建时间',
+            'updated_at': '更新时间'
+        }
+        form_columns = ['name', 'slug', 'short_desc', 'description', 'logo', 'github_url', 'source_type', 'source_repo', 'usage', 'examples', 'is_active', 'is_featured', 'sort_order']
+
+        def on_model_change(self, form, model, is_created):
+            """保存前自动生成slug（如果为空）"""
+            import re
+            from pypinyin import lazy_pinyin
+
+            # 如果slug为空，从name自动生成
+            if not model.slug or model.slug.strip() == '':
+                slug = ''.join(lazy_pinyin(model.name))
+                slug = slug.lower()
+                slug = re.sub(r'[^\w\s-]', '', slug)
+                slug = re.sub(r'[-\s]+', '-', slug).strip('-')
+
+                if not slug:
+                    slug = f"skill-{model.id}"
+
+                # 确保slug唯一
+                base_slug = slug[:50]
+                counter = 1
+                final_slug = slug
+
+                while counter < 100:
+                    existing = Skill.query.filter(Skill.slug == final_slug).first()
+                    if not existing or existing.id == model.id:
+                        break
+                    final_slug = f"{base_slug}-{counter}"
+                    counter += 1
+
+                model.slug = final_slug
+
     # Prompt模板管理视图
     class PromptAdmin(SecureModelView):
         can_edit = True
@@ -3436,6 +3536,7 @@ Sitemap: {}sitemap.xml
 
     admin.add_view(SiteAdmin(Site, db.session, name='网站管理'))
     admin.add_view(ApiKeyAdmin(ApiKey, db.session, name='API密钥', endpoint='api_keys'))
+    admin.add_view(SkillAdmin(Skill, db.session, name='Skills管理', endpoint='skills'))
     admin.add_view(TagAdmin(Tag, db.session, name='标签管理'))
     admin.add_view(NewsAdmin(News, db.session, name='新闻管理'))
     admin.add_view(PromptAdmin(PromptTemplate, db.session, name='Prompt管理'))