* chore: linting in mcp.spec.ts
* chore: linting in mcp.ts
* feat(mcp): support dynamic user field placeholders in MCP environment variables
- Added user object handling in MCP options, allowing for dynamic user field processing in environment variables, headers, and URLs.
- Updated `processMCPEnv` to utilize user fields for more flexible configurations.
* chore: update backend review workflow to include unit tests for @librechat/data-schemas
cdf42b3a03