refactor: rename ScadaLink → ZB.MOM.WW.ScadaBridge (code + projects + namespaces)

Solution + 23 src projects + 26 test projects renamed; folders, csproj,
namespaces, and ScadaLinkDbContext/ScadaBridgeDbContext class updated.
ActorSystem "scadalink" → "scadabridge", Akka seed-node URLs migrated.
SQL roles/logins, LDAP domains, CLI command name, and CLI config dir
(~/.scadalink → ~/.scadabridge) also renamed.

Build green; 5 Host.Tests fail awaiting SQL login rename in next commit.
Pre-existing StaleTagMonitor timing flakes unchanged.

Rename script committed at tools/rename-to-scadabridge.sh.

src/ZB.MOM.WW.ScadaBridge.Commons/Entities/Security/LdapGroupMapping.cs

@@ -0,0 +1,23 @@
+namespace ZB.MOM.WW.ScadaBridge.Commons.Entities.Security;
+
+public class LdapGroupMapping
+{
+    /// <summary>Gets or sets the primary key.</summary>
+    public int Id { get; set; }
+    /// <summary>Gets or sets the LDAP/AD group CN that this mapping targets.</summary>
+    public string LdapGroupName { get; set; }
+    /// <summary>Gets or sets the ScadaBridge role name this group maps to.</summary>
+    public string Role { get; set; }
+
+    // Parameterless constructor for EF Core seed data
+    private LdapGroupMapping() { LdapGroupName = null!; Role = null!; }
+
+    /// <summary>Initializes a new <see cref="LdapGroupMapping"/> linking an LDAP group to a ScadaBridge role.</summary>
+    /// <param name="ldapGroupName">The LDAP group name (CN).</param>
+    /// <param name="role">The ScadaBridge role name to assign.</param>
+    public LdapGroupMapping(string ldapGroupName, string role)
+    {
+        LdapGroupName = ldapGroupName ?? throw new ArgumentNullException(nameof(ldapGroupName));
+        Role = role ?? throw new ArgumentNullException(nameof(role));
+    }
+}

src/ZB.MOM.WW.ScadaBridge.Commons/Entities/Security/SiteScopeRule.cs

@@ -0,0 +1,11 @@
+namespace ZB.MOM.WW.ScadaBridge.Commons.Entities.Security;
+
+public class SiteScopeRule
+{
+    /// <summary>Database primary key.</summary>
+    public int Id { get; set; }
+    /// <summary>Foreign key to the <see cref="LdapGroupMapping"/> this rule restricts.</summary>
+    public int LdapGroupMappingId { get; set; }
+    /// <summary>Foreign key to the site this rule limits the mapping to.</summary>
+    public int SiteId { get; set; }
+}