feat: add time for heart beat

internal/ws/protocol.go

@@ -76,10 +76,11 @@ type stateMsg struct {
 	HandCounts  [4]int       `json:"hand_counts"`
 	Trick       []trickView  `json:"trick"`
 	LeadSuit    string       `json:"lead_suit,omitempty"`
-	TricksWon   [2]int       `json:"tricks_won"`
-	Scores      [2]int       `json:"scores"`
-	TargetScore int          `json:"target_score"`
-	Players     []PlayerInfo `json:"players"`
+	TricksWon     [2]int       `json:"tricks_won"`
+	Scores        [2]int       `json:"scores"`
+	TargetScore   int          `json:"target_score"`
+	TurnTimeoutMs int          `json:"turn_timeout_ms"` // مهلتِ نوبتِ انسان (برای شمارنده‌ی کلاینت)
+	Players       []PlayerInfo `json:"players"`
 }
 
 // handOverMsg نتیجه یک هَند.
@@ -118,7 +119,7 @@ type playerStatusMsg struct {
 }
 
 // buildState نمای بازی را برای جایگاه seat می‌سازد (کارت بقیه مخفی می‌ماند).
-func buildState(g *game.Game, roomID string, seat int, players []PlayerInfo) stateMsg {
+func buildState(g *game.Game, roomID string, seat int, players []PlayerInfo, turnTimeoutMs int) stateMsg {
 	hand := g.Hand(seat)
 	handStr := make([]string, len(hand))
 	for i, c := range hand {