refactor: vendor marked + dompurify 到项目内，实现零外部依赖

- marked (77行 ESM) + dompurify (1398行 ESM) 复制到 src/vendor/
- 包含 LICENSE 文件和类型声明（dompurify 类型去除 trusted-types 外部依赖）
- 移除 package.json 中 marked/dompurify/@types/dompurify 依赖
- 移除 electron-builder files 配置中的 node_modules 引用
- tsconfig.json include 新增 src/vendor/**/*.d.ts

package-lock.json

@@ -9,12 +9,9 @@
       "version": "5.1.5",
       "license": "MIT",
       "dependencies": {
-        "dompurify": "^3.4.0",
-        "marked": "^18.0.2",
         "sql.js": "^1.11.0"
       },
       "devDependencies": {
-        "@types/dompurify": "^3.0.5",
         "@types/node": "^20.17.0",
         "electron": "^33.4.11",
         "electron-builder": "^25.1.8",
@@ -1449,16 +1446,6 @@
         "@types/ms": "*"
       }
     },
-    "node_modules/@types/dompurify": {
-      "version": "3.0.5",
-      "resolved": "https://registry.npmmirror.com/@types/dompurify/-/dompurify-3.0.5.tgz",
-      "integrity": "sha512-1Wg0g3BtQF7sSb27fJQAKck1HECM6zV1EB66j8JH9i3LCjYabJa0FSdiSgsD5K/RbrsR0SiraKacLB+T8ZVYAg==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@types/trusted-types": "*"
-      }
-    },
     "node_modules/@types/estree": {
       "version": "1.0.8",
       "resolved": "https://registry.npmmirror.com/@types/estree/-/estree-1.0.8.tgz",
@@ -1532,13 +1519,6 @@
         "@types/node": "*"
       }
     },
-    "node_modules/@types/trusted-types": {
-      "version": "2.0.7",
-      "resolved": "https://registry.npmmirror.com/@types/trusted-types/-/trusted-types-2.0.7.tgz",
-      "integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==",
-      "devOptional": true,
-      "license": "MIT"
-    },
     "node_modules/@types/verror": {
       "version": "1.10.11",
       "resolved": "https://registry.npmmirror.com/@types/verror/-/verror-1.10.11.tgz",
@@ -2918,15 +2898,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/dompurify": {
-      "version": "3.4.0",
-      "resolved": "https://registry.npmmirror.com/dompurify/-/dompurify-3.4.0.tgz",
-      "integrity": "sha512-nolgK9JcaUXMSmW+j1yaSvaEaoXYHwWyGJlkoCTghc97KgGDDSnpoU/PlEnw63Ah+TGKFOyY+X5LnxaWbCSfXg==",
-      "license": "(MPL-2.0 OR Apache-2.0)",
-      "optionalDependencies": {
-        "@types/trusted-types": "^2.0.7"
-      }
-    },
     "node_modules/dotenv": {
       "version": "16.6.1",
       "resolved": "https://registry.npmmirror.com/dotenv/-/dotenv-16.6.1.tgz",
@@ -4465,18 +4436,6 @@
         "node": ">=12"
       }
     },
-    "node_modules/marked": {
-      "version": "18.0.2",
-      "resolved": "https://registry.npmmirror.com/marked/-/marked-18.0.2.tgz",
-      "integrity": "sha512-NsmlUYBS/Zg57rgDWMYdnre6OTj4e+qq/JS2ot3KrYLSoHLw+sDu0Nm1ZGpRgYAq6c+b1ekaY5NzVchMCQnzcg==",
-      "license": "MIT",
-      "bin": {
-        "marked": "bin/marked.js"
-      },
-      "engines": {
-        "node": ">= 20"
-      }
-    },
     "node_modules/matcher": {
       "version": "3.0.0",
       "resolved": "https://registry.npmmirror.com/matcher/-/matcher-3.0.0.tgz",