Conformance: Stream/fs/http implementation gaps blocking upstream tests #30
Description
Various upstream Node.js tests fail due to implementation gaps in bridged modules:
- fs: VFS doesn't support watch/watchFile, symlinks, permissions bits, BigInt stat fields, createReadStream/createWriteStream edge cases
- stream: Internal stream state behavior differs from Node.js (backpressure, error propagation, pipeline edge cases)
- http: Server request/response lifecycle edge cases, keep-alive, transfer encoding
Tracked via conformance test exclusions (category: implementation-gap).