- Added an override mimetype option to the file‑type validator and introduced SSE comment support in the core module
- Fixed multiple core bugs: stopped import lookup after the first export match, removed the global flag from middleware regexes, resolved barriers instantly when count is zero, and correctly serialized SSE retry fields with zero value
- Resolved microservices and express issues: corrected pub/sub client type in Redis listeners, nullified gRPC client on shutdown failures, and mapped missing Multer field nesting errors