Implement network switching improvements for HMAC file server

- Added support for chunked and resumable uploads to enhance resilience against network interruptions.
- Introduced a new upload session management system to track progress and handle retries.
- Enhanced connection management with improved timeout settings for mobile networks.
- Implemented network change detection and handling to pause and resume uploads seamlessly.
- Developed client-side retry logic for uploads to improve reliability.
- Updated configuration options to enable new features and set recommended defaults for timeouts and chunk sizes.
- Created integration layer to add new features without modifying existing core functionality.
- Established a network resilience manager to monitor network changes and manage active uploads.

cmd/server/main.go

@@ -140,7 +140,8 @@ type UploadsConfig struct {
 	ChunkedUploadsEnabled   bool     `toml:"chunkeduploadsenabled" mapstructure:"chunkeduploadsenabled"`
 	ChunkSize               string   `toml:"chunksize" mapstructure:"chunksize"`
 	ResumableUploadsEnabled bool     `toml:"resumableuploadsenabled" mapstructure:"resumableuploadsenabled"`
-	MaxResumableAge         string   `toml:"max_resumable_age" mapstructure:"max_resumable_age"`
+	SessionTimeout          string   `toml:"sessiontimeout" mapstructure:"sessiontimeout"`
+	MaxRetries              int      `toml:"maxretries" mapstructure:"maxretries"`
 }
 
 type DownloadsConfig struct {
@@ -760,6 +761,9 @@ func main() {
 	}
 	log.Infof("Running version: %s", versionString)
 
+	// Initialize network resilience features (non-intrusive)
+	InitializeEnhancements()
+
 	log.Infof("Starting HMAC file server %s...", versionString)
 	if conf.Server.UnixSocket {
 		socketPath := "/tmp/hmac-file-server.sock" // Use a default socket path since ListenAddress is now a port