Refactor code and update environment type definitions.

- Consolidate type definitions in vite-env.d.ts
- Update TypeScript include paths

lightrag_webui/src/env.d.ts

@@ -1,7 +0,0 @@
-/// <reference types="vite/client" />
-
-interface ImportMetaEnv {
-  readonly VITE_API_PROXY: string
-  readonly VITE_API_ENDPOINTS: string
-  readonly VITE_BACKEND_URL: string
-}

lightrag_webui/src/vite-env.d.ts

@@ -1 +1,11 @@
 /// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+  readonly VITE_API_PROXY: string
+  readonly VITE_API_ENDPOINTS: string
+  readonly VITE_BACKEND_URL: string
+}
+
+interface ImportMeta {
+  readonly env: ImportMetaEnv
+}