feat: stealth mode — replace game-related text with discrete symbols

Replace "Game Lobby", "Connect 4", and "Snake" headings with colored
circles (●●●●) and tildes (~~~~) so the UI is less obviously a game
at a glance. Also neutralize the lobby description text and shorten
the back link.

assets/css/input.css

@@ -3,7 +3,7 @@
 @source not "./daisyui{,*}.mjs";
 @plugin "./daisyui.mjs";
 @plugin "./daisyui-theme.mjs" {
-  name: "connect4";
+  name: "stealth";
   default: true;
   color-scheme: light;
 

main.go

@@ -483,7 +483,7 @@ func main() {
 			var content []h.H
 			content = append(content,
 				ui.BackToLobby(),
-				h.H1(h.Class("text-3xl font-bold"), h.Text("Connect 4")),
+				ui.StealthTitle("text-3xl font-bold"),
 				ui.PlayerInfo(g, myColor),
 				ui.StatusBanner(g, myColor, createRematch.OnClick()),
 				ui.BoardComponent(g, columnClick, myColor),
@@ -674,7 +674,7 @@ func main() {
 			var content []h.H
 			content = append(content,
 				ui.BackToLobby(),
-				h.H1(h.Class("text-3xl font-bold"), h.Text("Snake")),
+				h.H1(h.Class("text-3xl font-bold"), h.Text("~~~~")),
 				ui.SnakePlayerList(sg, mySlot),
 				ui.SnakeStatusBanner(sg, mySlot, createRematch.OnClick()),
 			)

ui/lobby.go

@@ -26,7 +26,16 @@ type LobbyProps struct {
 }
 
 func BackToLobby() h.H {
-	return h.A(h.Class("link text-sm opacity-70"), h.Href("/"), h.Text("← Back to Lobby"))
+	return h.A(h.Class("link text-sm opacity-70"), h.Href("/"), h.Text("← Back"))
+}
+
+func StealthTitle(class string) h.H {
+	return h.Span(h.Class(class),
+		h.Span(h.Style("color:#4a2a3a"), h.Text("●")),
+		h.Span(h.Style("color:#2a4545"), h.Text("●")),
+		h.Span(h.Style("color:#4a2a3a"), h.Text("●")),
+		h.Span(h.Style("color:#2a4545"), h.Text("●")),
+	)
 }
 
 func LobbyView(p LobbyProps) h.H {
@@ -54,10 +63,10 @@ func LobbyView(p LobbyProps) h.H {
 
 	return h.Main(h.Class("max-w-md mx-auto mt-8 text-center"),
 		authSection,
-		h.H1(h.Class("text-3xl font-bold mb-4"), h.Text("Game Lobby")),
+		h.H1(h.Class("text-3xl font-bold mb-4"), StealthTitle("")),
 		h.Div(h.Class("tabs tabs-box mb-6 justify-center"),
-			h.Button(h.Class(connect4Class), h.Type("button"), h.Text("Connect 4"), p.TabClickConnect4),
+			h.Button(h.Class(connect4Class), h.Type("button"), StealthTitle(""), p.TabClickConnect4),
-			h.Button(h.Class(snakeClass), h.Type("button"), h.Text("Snake"), p.TabClickSnake),
+			h.Button(h.Class(snakeClass), h.Type("button"), h.Text("~~~~"), p.TabClickSnake),
 		),
 		tabContent,
 	)
@@ -65,7 +74,7 @@ func LobbyView(p LobbyProps) h.H {
 
 func connect4LobbyContent(p LobbyProps) h.H {
 	return h.Div(
-		h.P(h.Class("mb-4"), h.Text("Challenge a friend to a game of Connect 4!")),
+		h.P(h.Class("mb-4"), h.Text("Start a new session")),
 		h.Form(
 			h.FieldSet(h.Class("fieldset"),
 				h.Label(h.Class("label"), h.Text("Your Nickname"), h.Attr("for", "nickname")),