refactor: icon 字段从 Lucide 名称迁移到内联 SVG

将 9 个技能的 icon 字段从 Lucide 图标名称（如 "search"）替换为
内联 SVG 字符串，使市场数据完全自包含，新增技能无需修改前端代码。

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

skills/web-search/skill.json

@@ -1,11 +1,17 @@
 {
   "id": "web-search",
   "name": "网络搜索",
-  "icon": "search",
+  "icon": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"m21 21-4.34-4.34\"></path><circle cx=\"11\" cy=\"11\" r=\"8\"></circle></svg>",
   "shortDesc": "智能网络搜索与信息聚合，快速获取准确答案",
   "fullDesc": "网络搜索技能让 Agent 能够实时检索互联网信息，支持多引擎聚合、结果去重、可信度评估和结构化摘要。不只是返回链接，而是提炼出可直接使用的答案。\n\n功能特性：\n- 多引擎聚合：Google、Bing、DuckDuckGo 结果综合\n- 智能摘要：自动提取关键信息，生成 TL;DR\n- 可信度评估：基于域名权威性、发布日期、交叉验证打分\n- 实时热点：追踪新闻、社交媒体趋势\n- 学术搜索：arXiv、Google Scholar、PubMed 专精模式",
   "category": "productivity",
-  "tags": ["搜索", "信息检索", "网页抓取", "实时信息", "研究辅助"],
+  "tags": [
+    "搜索",
+    "信息检索",
+    "网页抓取",
+    "实时信息",
+    "研究辅助"
+  ],
   "version": "3.0.2",
   "latestVersion": "3.0.2",
   "updatedAt": "2025-02-10",
@@ -19,9 +25,21 @@
   "installStatus": "not_installed",
   "riskLevel": "medium",
   "requires": {
-    "tools": ["http_client", "html_parser", "rate_limiter"],
-    "connections": ["internet", "search_api"]
+    "tools": [
+      "http_client",
+      "html_parser",
+      "rate_limiter"
+    ],
+    "connections": [
+      "internet",
+      "search_api"
+    ]
   },
-  "compatibleAgents": ["translator", "business-analyst", "data-analyst", "writing-coach"],
+  "compatibleAgents": [
+    "translator",
+    "business-analyst",
+    "data-analyst",
+    "writing-coach"
+  ],
   "changelog": "v3.0.2: 新增 AI 搜索结果去重算法，减少 40% 冗余信息"
 }