restore: context package needed by protocol

chore: sync with node requirements, add runtime package

refactor: remove CGO dependencies, clean up MLX/GPU code

refactor: remove CGO dependencies, clean up MLX/GPU code

chore: remove stale node dependency, update deps

fix: correct math import path

refactor: update dependencies and engine improvements

refactor: quasar protocol improvements and test updates

- Update quasar BLS and GPU integration
- Improve epoch and threshold management
- Remove deprecated ringtail module
- Update integration tests for chain engine
- Enhance dynamic and dual threshold tests
- CGO_ENABLED=1 default for GPU acceleration

fix(integration): align integration.go with BlockProposer API

- Rename VoteEmitter -> BlockProposer
- Rename gossiperEmitter -> gossiperProposer
- Rename NetID -> NetworkID for clarity
- Use SetProposer instead of SetEmitter
- Add HandleIncomingBlock for gossip handling
- Update all method signatures to match engine.go

Fixes node build failure with missing methods.

Update block builder tests