docs(src): add missing XML docs and strip tracking-ID comments

Sweep of 203 source files resolving CommentChecker findings: add
<summary>/<param>/<returns>/<inheritdoc> where missing, and remove
resolved task/issue tracking markers (Tests-NNN, Worker-NNN, Server-NNN,
Task N) from code comments. Comment/doc-only — no logic changes.
Server+Tests build clean under TreatWarningsAsErrors.

src/ZB.MOM.WW.MxGateway.Server/Dashboard/DashboardAuthenticator.cs

@@ -16,7 +16,7 @@ namespace ZB.MOM.WW.MxGateway.Server.Dashboard;
 /// shaped exactly as before (see <see cref="CreatePrincipal"/>).
 /// </summary>
 /// <param name="ldapAuthService">Shared LDAP bind-then-search provider.</param>
-/// <param name="roleMapper">Maps LDAP groups to dashboard roles (Task 1.1 seam).</param>
+/// <param name="roleMapper">Maps LDAP groups to dashboard roles.</param>
 /// <param name="logger">Logger for diagnostic, credential-free login outcomes.</param>
 public sealed class DashboardAuthenticator(
     ILdapAuthService ldapAuthService,
@@ -107,11 +107,11 @@ public sealed class DashboardAuthenticator(
         [
             // Keep NameIdentifier so any existing read-site that uses it continues to work.
             new Claim(ClaimTypes.NameIdentifier, username),
-            // Canonical login-username claim (Task 1.5).
+            // Canonical login-username claim.
             new Claim(ZbClaimTypes.Username, username),
             // ZbClaimTypes.Name == ClaimTypes.Name — drives Identity.Name resolution.
             new Claim(ZbClaimTypes.Name, displayName),
-            // Canonical display-name claim for cross-app consistency (Task 1.5).
+            // Canonical display-name claim for cross-app consistency.
             new Claim(ZbClaimTypes.DisplayName, displayName),
         ];