⌨️ feat: Add Shift-Key Shortcuts for Instant Conversation Actions (#10732)

* 🪦 refactor: Remove Legacy Code (#10533)

* 🗑️ chore: Remove unused Legacy Provider clients and related helpers

* Deleted OpenAIClient and GoogleClient files along with their associated tests.
* Removed references to these clients in the clients index file.
* Cleaned up typedefs by removing the OpenAISpecClient export.
* Updated chat controllers to use the OpenAI SDK directly instead of the removed client classes.

* chore/remove-openapi-specs

* 🗑️ chore: Remove unused mergeSort and misc utility functions

* Deleted mergeSort.js and misc.js files as they are no longer needed.
* Removed references to cleanUpPrimaryKeyValue in messages.js and adjusted related logic.
* Updated mongoMeili.ts to eliminate local implementations of removed functions.

* chore: remove legacy endpoints

* chore: remove all plugins endpoint related code

* chore: remove unused prompt handling code and clean up imports

* Deleted handleInputs.js and instructions.js files as they are no longer needed.
* Removed references to these files in the prompts index.js.
* Updated docker-compose.yml to simplify reverse proxy configuration.

* chore: remove unused LightningIcon import from Icons.tsx

* chore: clean up translation.json by removing deprecated and unused keys

* chore: update Jest configuration and remove unused mock file

    * Simplified the setupFiles array in jest.config.js by removing the fetchEventSource mock.
    * Deleted the fetchEventSource.js mock file as it is no longer needed.

* fix: simplify endpoint type check in Landing and ConversationStarters components

    * Updated the endpoint type check to use strict equality for better clarity and performance.
    * Ensured consistency in the handling of the azureOpenAI endpoint across both components.

* chore: remove unused dependencies from package.json and package-lock.json

* chore: remove legacy EditController, associated routes and imports

* chore: update banResponse logic to refine request handling for banned users

* chore: remove unused validateEndpoint middleware and its references

* chore: remove unused 'res' parameter from initializeClient in multiple endpoint files

* chore: remove unused 'isSmallScreen' prop from BookmarkNav and NewChat components; clean up imports in ArchivedChatsTable and useSetIndexOptions hooks; enhance localization in PromptVersions

* chore: remove unused import of Constants and TMessage from MobileNav; retain only necessary QueryKeys import

* chore: remove unused TResPlugin type and related references; clean up imports in types and schemas

* 📦 chore: Bump Express.js to v5 (#10671)

* chore: update express to version 5.1.0 in package.json

* chore: update express-rate-limit to version 8.2.1 in package.json and package-lock.json

* fix: Enhance server startup error handling in experimental and index files

* Added error handling for server startup in both experimental.js and index.js to log errors and exit the process if the server fails to start.
* Updated comments in openidStrategy.js to clarify the purpose of the CustomOpenIDStrategy class and its relation to Express version changes.

* chore: Implement rate limiting for all POST routes excluding /speech, required for express v5

* Added middleware to apply IP and user rate limiters to all POST requests, ensuring that the /speech route remains unaffected.
* Enhanced code clarity with comments explaining the new rate limiting logic.

* chore: Enable writable req.query for mongoSanitize compatibility in Express 5

* chore: Ensure req.body exists in multiple middleware and route files for Express 5 compatibility

* 🪨 feat: Add PROXY support for AWS Bedrock endpoints (#8871)

* feat: added PROXY support for AWS Bedrock endpoint

* chore: explicit install of new packages required for bedrock proxy

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

* feat: add shift key tracking and instant delete functionality in conversation options

* refactor(Convo): simplify classname logic

* fix: restore package-lock after rebase

---------

Co-authored-by: Danny Avila <danny@librechat.ai>
Co-authored-by: Arthur Barrett <abarrett@fas.harvard.edu>

client/src/hooks/Generic/useShiftKey.ts

@@ -0,0 +1,40 @@
+import { useState, useEffect } from 'react';
+
+/**
+ * Hook to track whether the shift key is currently being held down
+ * @returns boolean indicating if shift key is pressed
+ */
+export default function useShiftKey(): boolean {
+  const [isShiftHeld, setIsShiftHeld] = useState(false);
+
+  useEffect(() => {
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Shift') {
+        setIsShiftHeld(true);
+      }
+    };
+
+    const handleKeyUp = (e: KeyboardEvent) => {
+      if (e.key === 'Shift') {
+        setIsShiftHeld(false);
+      }
+    };
+
+    // Reset shift state when window loses focus
+    const handleBlur = () => {
+      setIsShiftHeld(false);
+    };
+
+    window.addEventListener('keydown', handleKeyDown);
+    window.addEventListener('keyup', handleKeyUp);
+    window.addEventListener('blur', handleBlur);
+
+    return () => {
+      window.removeEventListener('keydown', handleKeyDown);
+      window.removeEventListener('keyup', handleKeyUp);
+      window.removeEventListener('blur', handleBlur);
+    };
+  }, []);
+
+  return isShiftHeld;
+}