add: gui and tsdiag

go.mod

@@ -3,14 +3,17 @@ module tslink
 go 1.26.3
 
 require (
+	gioui.org v0.10.1
 	github.com/BurntSushi/toml v1.6.0
 	github.com/lmittmann/tint v1.1.3
 	github.com/mattn/go-colorable v0.1.13
+	golang.org/x/net v0.53.0
 	tailscale.com v1.98.2
 )
 
 require (
 	filippo.io/edwards25519 v1.2.0 // indirect
+	gioui.org/shader v1.0.8 // indirect
 	github.com/akutz/memconn v0.1.0 // indirect
 	github.com/alexbrainman/sspi v0.0.0-20231016080023-1a75b4708caa // indirect
 	github.com/coder/websocket v1.8.12 // indirect
@@ -19,6 +22,7 @@ require (
 	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
 	github.com/gaissmai/bart v0.26.1 // indirect
 	github.com/go-json-experiment/json v0.0.0-20250813024750-ebf49471dced // indirect
+	github.com/go-text/typesetting v0.3.4 // indirect
 	github.com/godbus/dbus/v5 v5.1.1-0.20230522191255-76236955d466 // indirect
 	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
 	github.com/google/btree v1.1.3 // indirect
@@ -44,7 +48,8 @@ require (
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba // indirect
 	golang.org/x/crypto v0.50.0 // indirect
 	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
-	golang.org/x/net v0.53.0 // indirect
+	golang.org/x/exp/shiny v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
+	golang.org/x/image v0.27.0 // indirect
 	golang.org/x/oauth2 v0.36.0 // indirect
 	golang.org/x/sync v0.20.0 // indirect
 	golang.org/x/sys v0.43.0 // indirect