♻️ refactor(helpers): standardize file naming conventions and improve code organization

- Rename files to follow camelCase naming convention:
  • auth-header.js → authUtils.js
  • other.js → logUtils.js
  • rehypeSplitWordsIntoSpans.js → textAnimationUtils.js

- Update import paths in affected components:
  • Update exports in helpers/index.js
  • Fix import in LogsTable.js for logUtils
  • Fix import in MarkdownRenderer.js for textAnimationUtils

- Remove old files after successful migration

- Improve file naming clarity:
  • authUtils.js better describes authentication utilities
  • logUtils.js clearly indicates log processing functions
  • textAnimationUtils.js concisely describes text animation functionality

This refactoring enhances code maintainability and follows consistent naming patterns throughout the helpers directory.

web/src/pages/Playground/index.js

@@ -22,14 +22,14 @@ import {
   DEFAULT_MESSAGES,
   MESSAGE_ROLES,
   ERROR_MESSAGES
-} from '../../utils/constants.js';
+} from '../../constants/playground.constants.js';
 import {
   buildMessageContent,
   createMessage,
   createLoadingAssistantMessage,
   getTextContent,
   buildApiPayload
-} from '../../utils/messageUtils.js';
+} from '../../helpers/messageUtils.js';
 
 // Components
 import {