multi_fix: harden peer/session handling, tighten foreign-network trust, and improve web client metadata (#1999)

* machine-id should be scoped unbder same user-id
* feat: report device os metadata to console
* fix sync root key cause packet loss
* fix tun packet not invalid
* fix faketcp cause lat jitter
* fix some packet not decrypt
* fix peer info patch, improve performance of update self info
* fix foreign credential identity mismatch handling

easytier/src/proto/web.proto

@@ -4,6 +4,12 @@ import "common.proto";
 
 package web;
 
+message DeviceOsInfo {
+  string os_type = 1;
+  string version = 2;
+  string distribution = 3;
+}
+
 message HeartbeatRequest {
   common.UUID machine_id = 1;
   common.UUID inst_id = 2;
@@ -14,6 +20,7 @@ message HeartbeatRequest {
   string hostname = 6;
 
   repeated common.UUID running_network_instances = 7;
+  DeviceOsInfo device_os = 8;
 }
 
 message HeartbeatResponse {}