chore: refactor codebase for improved maintainability and clarity

docs: clarify and expand documentation across core subsystems

chore: update CI workflow and dependencies for Go 1.24+

ci: update GitHub Actions workflows to latest action versions

ci: update CI workflows for compatibility and version upgrades

chore: bump go.uber.org/mock to v0.6.0

docs: document contributor workflows and queue library architecture

chore(deps): bump github.com/appleboy/com from 0.3.0 to 0.4.0 (#149)

ci: restrict CI testing to Ubuntu platform only

ci: drop Windows support from CI Go workflow

ci: upgrade golangci-lint GitHub Action to v2.1

ci: update CI workflows for broader OS support and Go versioning

chore: update Go version and mock dependency

docs: improve and expand documentation for queue and worker internals

docs: optimize Queue library for CPU usage and performance