- Added safe file unlocking logic in `driver.go`, returning an error if unlocking fails.
- Introduced the `safeBoxUnlocked` variable of type `sync.Map` to record the IDs of unlocked files.
- Enhanced error handling logic to automatically attempt to unlock safe files and re-retrieve the file list.
- Added the `IsLock` field to file types in `types.go` to identify whether they are safe files.
- Added a constant definition for the `SafeBoxUnlock` interface address in `util.go`.
- Added the `unlockSafeBox` method to unlock a safe with a specified file ID via the API.
- Optimized the file retrieval logic to automatically call the unlock method when the safe is locked.
- eliminating fixed 200 ms delay in getFiles to prevent thread starvation
- allowing cancellation via context to mitigate potential DoS attacks by immediately cancelling excessive requests
* fix：123 driver connect error
* feat: calculate sign with pure go
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Co-authored-by: tangminghao <tangminghao@hxzn.com>
Co-authored-by: Andy Hsu <i@nn.ci>
