Remove all Medusa-related components and references

- Removed packages/medusa-forms/ package entirely
- Removed apps/docs/src/medusa-forms/ Storybook stories
- Updated apps/docs/package.json to remove @lambdacurry/medusa-forms dependency
- Cleaned up TypeScript path mappings in apps/docs/tsconfig.json
- Removed Medusa aliases from apps/docs/vite.config.mjs
- Simplified apps/docs/src/main.css to remove Medusa UI imports and tokens
- Updated yarn.lock to remove unused Medusa dependencies

All Medusa components have been successfully migrated to the separate medusa-forms repository.

Author: codegen-sh[bot]

apps/docs/package.json

@@ -14,7 +14,6 @@
     "@hookform/error-message": "^2.0.0",
     "@hookform/resolvers": "^3.9.1",
     "@lambdacurry/forms": "*",
-    "@lambdacurry/medusa-forms": "*",
     "@storybook/addon-links": "^9.0.1",
     "@storybook/react-vite": "^9.0.1",
     "react": "^19.0.0",