* chore(deps): update go-playground/validator to v10.26.0
* chore(deps): update Go version to 1.24.2 and dependencies, reorganize dependencies into categorized sections
* chore(deps): update Go version to 1.24.2 in Dockerfile
* refactor(agent): replace deprecated context import with standard context package
* feat(http3): add HTTP/3 support and refactor server handling code into utility functions
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Co-authored-by: yusing <yusing@6uo.me>
