- Updated `golang.org/x/sys` to v0.38.0 in `go.mod` and replaced `syscall` with `windows` package for memory allocation in `loader_windows.go`.
- Improved cross-compilation in `.goreleaser.yml` using Zig-based toolchains for better platform support.
- Changed GitHub Actions workflow to use macOS runners and added Zig toolchain setup.
- Removed `examples/plugin/main.go` and `internal/pluginhost/loader_plugin.go` after migrating to a more modular system.
- Introduced `streamBridge` in `internal/pluginhost/stream_bridge.go` for efficient stream handling and communication.
- Added examples of `thinking` plugins written in both Rust and Go under `examples/plugin/thinking`.
- Enhanced test coverage for plugin host system changes, including stream chunk translation and thinking logic.
- Improved API compatibility and ensured backward-compatible upgrades for plugin execution.
