feat: share button uses steamAppId/slug instead of UUID

app/game/[id]/game-page-client.tsx

@@ -61,6 +61,7 @@ interface Game {
     capsuleImage: string | null
     storeUrl: string | null
     source: string
+    slug: string | null
     lastSync: string | null
     syncStatus: string | null
     createdAt: string
@@ -1901,6 +1902,9 @@ export function GamePageClient({
                             <PresetDetailModal
                                 preset={preset}
                                 gameId={gameId}
+                                gameSource={game.source}
+                                gameSteamAppId={game.steamAppId}
+                                gameSlug={game.slug ?? null}
                                 onClose={handlePresetClose}
                                 onDelete={handleDeletePreset}
                                 onReport={handleReportPreset}

app/game/[id]/preset-detail-modal.tsx

@@ -73,6 +73,9 @@ interface Preset {
 interface PresetDetailModalProps {
     preset: Preset
     gameId: string
+    gameSource: string
+    gameSteamAppId: number | null
+    gameSlug: string | null
     onClose: () => void
     onDelete: (presetId: string) => void
     onReport: (
@@ -140,6 +143,9 @@ function hasGameInfoData(p: Preset): boolean {
 export function PresetDetailModal({
     preset,
     gameId,
+    gameSource,
+    gameSteamAppId,
+    gameSlug,
     onClose,
     onDelete,
     onReport,
@@ -169,7 +175,15 @@ export function PresetDetailModal({
     const isAuthenticated = !!session?.user
 
     const handleShare = () => {
-        const url = `${window.location.origin}/game/${gameId}?preset=${preset.id}`
+        let identifier: string
+        if (gameSource === "steam" && gameSteamAppId != null) {
+            identifier = String(gameSteamAppId)
+        } else if (gameSlug) {
+            identifier = gameSlug
+        } else {
+            identifier = gameId // fallback for edge cases
+        }
+        const url = `${window.location.origin}/game/${identifier}?preset=${preset.id}`
         navigator.clipboard.writeText(url)
         setCopied(true)
         setTimeout(() => setCopied(false), 2000)