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/doc-parser/skill.json

@@ -1,11 +1,17 @@
 {
   "id": "doc-parser",
   "name": "文档解析器",
-  "icon": "file-text",
+  "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=\"M6 22a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h8a2.4 2.4 0 0 1 1.704.706l3.588 3.588A2.4 2.4 0 0 1 20 8v12a2 2 0 0 1-2 2z\"></path><path d=\"M14 2v5a1 1 0 0 0 1 1h5\"></path><path d=\"M10 9H8\"></path><path d=\"M16 13H8\"></path><path d=\"M16 17H8\"></path></svg>",
   "shortDesc": "支持 50+ 格式的文档解析与结构化提取",
   "fullDesc": "文档解析器是 Agent 的文档理解基础设施。无论是扫描版 PDF、手写笔记照片还是复杂排版的 Word 文档，都能准确提取文本、表格、图片和元数据，输出结构化的 Markdown 或 JSON。\n\n支持格式：\n- 办公文档：Word、Excel、PowerPoint、WPS\n- 版式文档：PDF（含扫描版 OCR）、EPUB、MOBI\n- 图片文档：JPG、PNG、TIFF、WebP（OCR 识别）\n- 标记语言：Markdown、HTML、XML、LaTeX\n- 代码文档：Jupyter Notebook、Swagger/OpenAPI",
   "category": "data",
-  "tags": ["文档解析", "OCR", "PDF处理", "表格提取", "格式转换"],
+  "tags": [
+    "文档解析",
+    "OCR",
+    "PDF处理",
+    "表格提取",
+    "格式转换"
+  ],
   "version": "2.1.3",
   "latestVersion": "2.1.3",
   "updatedAt": "2025-02-14",
@@ -19,9 +25,19 @@
   "installStatus": "not_installed",
   "riskLevel": "low",
   "requires": {
-    "tools": ["ocr_engine", "pdf_renderer", "table_extractor", "layout_analyzer"],
+    "tools": [
+      "ocr_engine",
+      "pdf_renderer",
+      "table_extractor",
+      "layout_analyzer"
+    ],
     "connections": []
   },
-  "compatibleAgents": ["writing-coach", "data-analyst", "translator", "code-reviewer"],
+  "compatibleAgents": [
+    "writing-coach",
+    "data-analyst",
+    "translator",
+    "code-reviewer"
+  ],
   "changelog": "v2.1.3: 新增手写公式识别，支持 LaTeX 自动转换"
 }