- Added async dispatch loop to `Watcher` for handling incremental `AuthUpdate` with in-memory buffering.
- Improved resilience against high-frequency auth changes by coalescing updates and reducing redundant processing.
- Updated `cliproxy` service to increase auth update queue capacity and optimize backlog consumption.
- Added detailed SDK integration documentation in English and Chinese (`sdk-watcher.md`, `sdk-watcher_CN.md`).