fix: remove ImportMeta interface redeclaration

- ImportMeta is already defined as built-in global by vite/client
- Keep only ImportMetaEnv extension for custom env variables
- Fixes eslint no-redeclare error

src/vite-env.d.ts

@@ -3,7 +3,3 @@
 interface ImportMetaEnv {
   readonly VITE_DEFAULT_ARTICLE_NADDR: string
 }
-
-interface ImportMeta {
-  readonly env: ImportMetaEnv
-}