chore: gitignore generated _templ.go files, track .templ sources

Generated _templ.go files are deterministic output from .templ sources,
same as output.css from input.css. Remove them from version control to
reduce diff noise and merge conflicts. Add build:templ and live:templ
tasks to the Taskfile so generation happens as part of the build.

features/c4game/components/status.templ

@@ -0,0 +1,151 @@
+package components
+
+import (
+	"github.com/ryanhamamura/c4/config"
+	"github.com/ryanhamamura/c4/game"
+	"github.com/starfederation/datastar-go/datastar"
+)
+
+templ StatusBanner(g *game.Game, myColor int) {
+	<div id="c4-status" class={ statusClass(g, myColor) }>
+		{ statusMessage(g, myColor) }
+		if g.IsFinished() {
+			if g.RematchGameID != nil {
+				<a
+					class="btn btn-sm bg-white text-gray-800 border-none ml-4"
+					href={ templ.SafeURL("/games/" + *g.RematchGameID) }
+				>
+					Join Rematch
+				</a>
+			} else {
+				<button
+					class="btn btn-sm bg-white text-gray-800 border-none ml-4"
+					type="button"
+					data-on:click={ datastar.PostSSE("/games/%s/rematch", g.ID) }
+				>
+					Play again
+				</button>
+			}
+		}
+	</div>
+}
+
+templ PlayerInfo(g *game.Game, myColor int) {
+	<div id="c4-players" class="flex gap-8 mb-2">
+		for _, info := range playerInfoPairs(g, myColor) {
+			<div class="flex items-center gap-2">
+				<span class={ "player-chip " + info.ColorClass }></span>
+				<span>{ info.Label }</span>
+			</div>
+		}
+	</div>
+}
+
+templ InviteLink(gameID string) {
+	<div class="mt-4 text-center">
+		<p>Share this link with your opponent:</p>
+		<div class="bg-base-200 p-4 rounded-lg font-mono break-all my-2">
+			{ config.Global.AppURL + "/games/" + gameID }
+		</div>
+		<button
+			class="btn btn-sm mt-2"
+			type="button"
+			onclick={ copyToClipboard(config.Global.AppURL + "/games/" + gameID) }
+		>
+			Copy Link
+		</button>
+	</div>
+}
+
+script copyToClipboard(url string) {
+	navigator.clipboard.writeText(url)
+}
+
+func statusClass(g *game.Game, myColor int) string {
+	switch g.Status {
+	case game.StatusWaitingForPlayer:
+		return "alert bg-base-200 text-xl font-bold"
+	case game.StatusInProgress:
+		if g.CurrentTurn == myColor {
+			return "alert alert-success text-xl font-bold"
+		}
+		return "alert bg-base-200 text-xl font-bold"
+	case game.StatusWon:
+		if g.Winner != nil && g.Winner.Color == myColor {
+			return "alert alert-success text-xl font-bold"
+		}
+		return "alert alert-error text-xl font-bold"
+	case game.StatusDraw:
+		return "alert alert-warning text-xl font-bold"
+	}
+	return "alert bg-base-200 text-xl font-bold"
+}
+
+func statusMessage(g *game.Game, myColor int) string {
+	switch g.Status {
+	case game.StatusWaitingForPlayer:
+		return "Waiting for opponent..."
+	case game.StatusInProgress:
+		if g.CurrentTurn == myColor {
+			return "Your turn!"
+		}
+		return opponentName(g, myColor) + "'s turn"
+	case game.StatusWon:
+		if g.Winner != nil && g.Winner.Color == myColor {
+			return "You win!"
+		}
+		if g.Winner != nil {
+			return g.Winner.Nickname + " wins!"
+		}
+		return "Game over"
+	case game.StatusDraw:
+		return "It's a draw!"
+	}
+	return ""
+}
+
+func opponentName(g *game.Game, myColor int) string {
+	for _, p := range g.Players {
+		if p != nil && p.Color != myColor {
+			return p.Nickname
+		}
+	}
+	return "Opponent"
+}
+
+type playerInfoData struct {
+	ColorClass string
+	Label      string
+}
+
+func playerInfoPairs(g *game.Game, myColor int) []playerInfoData {
+	var result []playerInfoData
+
+	var myName, oppName string
+	var myClass, oppClass string
+
+	for _, p := range g.Players {
+		if p == nil {
+			continue
+		}
+		colorClass := "yellow"
+		if p.Color == 1 {
+			colorClass = "red"
+		}
+		if p.Color == myColor {
+			myName = p.Nickname
+			myClass = colorClass
+		} else {
+			oppName = p.Nickname
+			oppClass = colorClass
+		}
+	}
+
+	if oppName == "" {
+		oppName = "Waiting..."
+	}
+
+	result = append(result, playerInfoData{ColorClass: myClass, Label: myName + " (You)"})
+	result = append(result, playerInfoData{ColorClass: oppClass, Label: oppName})
+	return result
+}