feat: add new interfaces, services, and utilities for API integration

refactor: reorganize type definitions and improve type safety

build: add lodash and @types/lodash as dependencies

chore: update tsconfig and vite config for path aliases

style: improve code organization and add documentation comments

fix: correct type usage in LanguageSwitcher component

perf: implement snackbar provider for global notifications

test: add new test interfaces and utility functions

ci: update pnpm-lock.yaml with new dependencies

tsconfig.json

@@ -4,5 +4,8 @@
     { "path": "./tsconfig.app.json" },
     { "path": "./tsconfig.node.json" }
   ],
-  "exclude": ["rag_web_core"]
+  // exclude rag_web_core/**/*
+  "exclude": [
+    "rag_web_core/**"
+  ]
 }