Rewrite LayerPacker as skyline packer, add Extreme Points alternative, manual footprint tuning and reordering UI

- Replace the old layer-grid LayerPacker with a skyline (lowest-slot-first) algorithm:
  grows the footprint only when items truly can't fit within maxBox, lets shorter
  types stack multiple sub-layers into taller leftover space, cascades unfinished
  layers to later types, and allows a staircase profile to minimize wasted volume.
- Fix ItemDatabaseEditor NumericUpDown crash (Value set before Minimum/Maximum) and
  ItemDatabase.Upsert doing INSERT instead of UPDATE (was keyed by Name, now by Id).
- Add Packer3D as a working Extreme Points algorithm (was dead/commented-out code)
  behind a shared IPacker interface, selectable in the UI alongside Skyline.
- Add manual footprint (Skyline) / box-size (Extreme Points) adjustment controls for
  the first box, with correct min/max clamping against the configured max box size.
- Add a "Poradie" column with up/down buttons to reorder packing items; both packers
  now honor that manual order instead of re-sorting by volume.
- Drop multi-box packing (single box only), add a pre-pack volume warning, and make
  unpacked items exportable to PDF / inspectable via a result-label tooltip, both
  grouped by type with dimensions, count and total volume.
- Merge the min/max box dimension groups, hide the now-unused box navigation group,
  and misc UI cleanup (typo fix, group renames, wider item name column).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

BoxPacker3D.Setup.vdproj

@@ -44,6 +44,14 @@
             "PrerequisitesLocation" = "2:1"
             "Url" = "8:"
             "ComponentsUrl" = "8:"
+                "Items"
+                {
+                    "{EDC2488A-8267-493A-A98E-7D9C3B36CDF3}:.NETFramework,Version=v4.7.2"
+                    {
+                    "Name" = "8:Microsoft .NET Framework 4.7.2 (x86 and x64)"
+                    "ProductCode" = "8:.NETFramework,Version=v4.7.2"
+                    }
+                }
             }
         }
         "Release"
@@ -68,6 +76,14 @@
             "PrerequisitesLocation" = "2:1"
             "Url" = "8:"
             "ComponentsUrl" = "8:"
+                "Items"
+                {
+                    "{EDC2488A-8267-493A-A98E-7D9C3B36CDF3}:.NETFramework,Version=v4.7.2"
+                    {
+                    "Name" = "8:Microsoft .NET Framework 4.7.2 (x86 and x64)"
+                    "ProductCode" = "8:.NETFramework,Version=v4.7.2"
+                    }
+                }
             }
         }
     }
@@ -165,15 +181,15 @@
         {
         "Name" = "8:Microsoft Visual Studio"
         "ProductName" = "8:3D Box Packer"
-        "ProductCode" = "8:{AD850FE7-45D6-4A75-BA48-14975E8E19D4}"
-        "PackageCode" = "8:{0DB6CFE3-A763-4935-B9A2-8FF88E8EAE76}"
+        "ProductCode" = "8:{FE12B7F9-9B56-4E84-87AB-DC02C8A15113}"
+        "PackageCode" = "8:{784F648E-B453-46B7-A4EB-028B03475A69}"
         "UpgradeCode" = "8:{73799267-8F2E-4994-AE60-A0CFA8390BEE}"
         "AspNetVersion" = "8:"
         "RestartWWWService" = "11:FALSE"
         "RemovePreviousVersions" = "11:TRUE"
         "DetectNewerInstalledVersion" = "11:TRUE"
         "InstallAllUsers" = "11:FALSE"
-        "ProductVersion" = "8:1.0.1"
+        "ProductVersion" = "8:1.0.3"
         "Manufacturer" = "8:Your Company"
         "ARPHELPTELEPHONE" = "8:"
         "ARPHELPLINK" = "8:"