🧩 refactor: Decouple MCP Config from Startup Config (#10689)

* Decouple mcp config from start up config

* Chore: Work on AI Review and Copilot Comments

- setRawConfig is not needed since the private raw config is not needed any more
- !!serversLoading bug fixed
- added unit tests for route /api/mcp/servers
- copilot comments addressed

* chore: remove comments

* chore: rename data-provider dir for MCP

* chore: reorganize mcp specific query hooks

* fix: consolidate imports for MCP server manager

* chore: add dev-staging branch to frontend review workflow triggers

* feat: add GitHub Actions workflow for building and pushing Docker images to GitHub Container Registry and Docker Hub

* fix: update label for tag input in BookmarkForm tests to improve clarity

---------

Co-authored-by: Atef Bellaaj <slalom.bellaaj@external.daimlertruck.com>
Co-authored-by: Danny Avila <danny@librechat.ai>

api/app/clients/tools/util/handleTools.js

@@ -10,6 +10,7 @@ const {
   createSafeUser,
   mcpToolPattern,
   loadWebSearchAuth,
+  mcpServersRegistry,
 } = require('@librechat/api');
 const {
   Tools,
@@ -347,7 +348,7 @@ Anchor pattern: \\ue202turn{N}{type}{index} where N=turn number, type=search|new
         /** Placeholder used for UI purposes */
         continue;
       }
-      if (serverName && options.req?.config?.mcpConfig?.[serverName] == null) {
+      if (serverName && (await mcpServersRegistry.getServerConfig(serverName, user)) == undefined) {
         logger.warn(
           `MCP server "${serverName}" for "${toolName}" tool is not configured${agent?.id != null && agent.id ? ` but attached to "${agent.id}"` : ''}`,
         );