docs: align architecture and API docs with Go 1.27 ingress support

- document HTTP/1.1, HTTP/2, and HTTP/3 ingress
- describe SSE streaming and timeout behavior
- document HTTP/2 and HTTP/3 Extended CONNECT
- update yamux stream and deployment architecture
- document Go 1.27 and UDP HTTP/3 requirements

go.mod

@@ -1,14 +1,16 @@
 module github.com/dalbodeule/hop-gate
 
-go 1.25.4
+go 1.27.0
 
 require (
 	entgo.io/ent v0.14.5
 	github.com/go-acme/lego/v4 v4.28.1
 	github.com/google/uuid v1.6.0
+	github.com/gorilla/websocket v1.5.3
 	github.com/hashicorp/yamux v0.1.2
 	github.com/lib/pq v1.10.9
 	github.com/prometheus/client_golang v1.19.0
+	github.com/quic-go/quic-go v0.62.0
 )
 
 require (
@@ -28,15 +30,16 @@ require (
 	github.com/prometheus/client_model v0.5.0 // indirect
 	github.com/prometheus/common v0.48.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
+	github.com/quic-go/qpack v0.6.0 // indirect
 	github.com/rogpeppe/go-internal v1.14.1 // indirect
 	github.com/zclconf/go-cty v1.14.4 // indirect
 	github.com/zclconf/go-cty-yaml v1.1.0 // indirect
-	golang.org/x/crypto v0.45.0 // indirect
-	golang.org/x/mod v0.29.0 // indirect
-	golang.org/x/net v0.47.0 // indirect
-	golang.org/x/sync v0.18.0 // indirect
-	golang.org/x/sys v0.38.0 // indirect
-	golang.org/x/text v0.31.0 // indirect
-	golang.org/x/tools v0.38.0 // indirect
+	golang.org/x/crypto v0.54.0 // indirect
+	golang.org/x/mod v0.37.0 // indirect
+	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sync v0.22.0 // indirect
+	golang.org/x/sys v0.47.0 // indirect
+	golang.org/x/text v0.40.0 // indirect
+	golang.org/x/tools v0.47.0 // indirect
 	google.golang.org/protobuf v1.36.10 // indirect
 )