Update formatting and improve consistency across configuration and documentation files

- Adjusted formatting in .prettierrc for consistent newline handling.
- Enhanced API documentation in BACKEND_PROMPT.md for better readability and structure.
- Updated docker-compose.yml to standardize quotes and improve health check commands.
- Refactored ESLint configuration for better readability and consistency.
- Made minor formatting adjustments in various frontend components for improved user experience and code clarity.

.prettierrc

@@ -9,4 +9,4 @@
   "tabWidth": 2,
   "trailingComma": "none",
   "useTabs": false
-}
+}