chore: prepare for v2.0 release

- Remove bin/obj/publish from git tracking
- Update .gitignore for .NET project (source only)
- Add release.ps1 local publish script (replaces Gitea workflow)
- Remove .gitea/workflows/release.yml
- Fix duplicate group names to show library names
- Fix HTML export to show Name column in duplicates report
- Fix consolidated permissions HTML to show folder/library names

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

SharepointToolbox/Services/DuplicatesService.cs

@@ -36,11 +36,24 @@ public class DuplicatesService : IDuplicatesService
         var groups = allItems
             .GroupBy(item => MakeKey(item, options))
             .Where(g => g.Count() >= 2)
-            .Select(g => new DuplicateGroup
+            .Select(g =>
             {
-                GroupKey = g.Key,
-                Name     = g.First().Name,
-                Items    = g.ToList()
+                var items = g.ToList();
+                var name = items[0].Name;
+                var libraries = items
+                    .Select(i => i.Library)
+                    .Where(l => !string.IsNullOrEmpty(l))
+                    .Distinct(StringComparer.OrdinalIgnoreCase)
+                    .OrderBy(l => l, StringComparer.OrdinalIgnoreCase)
+                    .ToList();
+                return new DuplicateGroup
+                {
+                    GroupKey = g.Key,
+                    Name     = libraries.Count > 0
+                        ? $"{name} ({string.Join(", ", libraries)})"
+                        : name,
+                    Items    = items
+                };
             })
             .OrderByDescending(g => g.Items.Count)
             .ThenBy(g => g.Name)