feat: implement versioning system by extracting version from environment, git tags, or package.json, and display app version in MainLayout; enhance ConfigPage with search functionality and CodeMirror integration for YAML editing

src/types/style.d.ts

@@ -2,3 +2,6 @@ declare module '*.module.scss' {
   const classes: Record<string, string>;
   export default classes;
 }
+
+// Global constants injected by Vite at build time
+declare const __APP_VERSION__: string;