Merge pull request #9 from Franciskid/security/harden-redemption-and-expiry

Harden redemption, expiry limits, token storage and guest sign-in

Jellyfin.Plugin.ShareLinks/Api/ShareLinksController.cs

@@ -190,10 +190,10 @@ public sealed class ShareLinksController : ControllerBase
             return BadRequest(new { error = "Expiry must be positive." });
         }
 
-        var effectiveMaxExpiryHours = Math.Max(config.MaxExpiryHours, 720);
-        if (expiryHours > effectiveMaxExpiryHours)
+        var maxExpiryHours = config.MaxExpiryHours > 0 ? config.MaxExpiryHours : 720;
+        if (expiryHours > maxExpiryHours)
         {
-            return BadRequest(new { error = $"Expiry exceeds the configured maximum of {effectiveMaxExpiryHours} hours." });
+            return BadRequest(new { error = $"Expiry exceeds the configured maximum of {maxExpiryHours} hours." });
         }
 
         var item = _libraryManager.GetItemById(itemId);