cli: print large ints as strings

JS/JSON integers are 64-bit floats, so only 53 bits of int are really available.
Print large ints as strings so that they don't get truncated or otherwise
mangled.

Fixes #7576

Signed-off-by: Chris Palmer <cpalmer@tailscale.com>

cmd/tailscale/cli/cli.go

@@ -130,6 +130,7 @@ change in the future.
 			netlockCmd,
 			licensesCmd,
 			exitNodeCmd,
+			updateCmd,
 		},
 		FlagSet:   rootfs,
 		Exec:      func(context.Context, []string) error { return flag.ErrHelp },
@@ -145,8 +146,6 @@ change in the future.
 	switch {
 	case slices.Contains(args, "debug"):
 		rootCmd.Subcommands = append(rootCmd.Subcommands, debugCmd)
-	case slices.Contains(args, "update"):
-		rootCmd.Subcommands = append(rootCmd.Subcommands, updateCmd)
 	}
 	if runtime.GOOS == "linux" && distro.Get() == distro.Synology {
 		rootCmd.Subcommands = append(rootCmd.Subcommands, configureHostCmd)

ipn/ipnstate/ipnstate.go

@@ -197,7 +197,7 @@ type PeerStatus struct {
 	// It has the form "host.<MagicDNSSuffix>."
 	DNSName string
 	OS      string // HostInfo.OS
-	UserID  tailcfg.UserID
+	UserID  tailcfg.UserID `json:",string"`
 
 	// TailscaleIPs are the IP addresses assigned to the node.
 	TailscaleIPs []netip.Addr