refactor(developer-config): 移除开发者配置页面相关代码和文档

- 删除应用配置页面及相关组件，重构路由为 /developer/config/[id].vue
- 移除开发者文档页面及其导航与样式实现
- 清理开发者侧功能完善工作日志文件
- 删除全局.gitignore配置文件，清理无用忽略规则
- 优化应用配置页面的参数读取和路由结构，解决刷新404问题
- 解决数据库配置唯一键冲突，调整保存逻辑避免重复插入
- 移除对后端配置加密字段的 secret 标记，修正加密异常问题

.nuxt/content/manifest.ts

@@ -0,0 +1,33 @@
+export const checksums = {
+  "docs": "v3.5.0--jyttfyMCdlkkD2Cy6uAigSOupLz7w9JK12BEQDx-Jb8"
+}
+export const checksumsStructure = {
+  "docs": "quFkNIUZZFAwcn0ok74-KsIERem9u0p5DW-cqEgxrPA"
+}
+
+export const tables = {
+  "docs": "_content_docs",
+  "info": "_content_info"
+}
+
+export default {
+  "docs": {
+    "type": "page",
+    "fields": {
+      "id": "string",
+      "title": "string",
+      "body": "json",
+      "description": "string",
+      "extension": "string",
+      "meta": "json",
+      "navigation": "json",
+      "path": "string",
+      "seo": "json",
+      "stem": "string"
+    }
+  },
+  "info": {
+    "type": "data",
+    "fields": {}
+  }
+}