docs(src): fix CommentChecker findings across src/ — 1,032 → 5 (all false positives)

Comment/XML-doc changes only, no code logic:
- strip project-tracking references (WP*, P*-*, row-NN, #NN, Task N) from
  comments, keeping the explanatory rationale
- add missing summaries, <param>, <returns>, <typeparam> and <inheritdoc/>
- replace misused <inheritdoc/> with real docs; where <inheritdoc/> was
  combined with useful remarks, move the rationale into // comments
- drop stale replicationActor <param> on DeploymentManagerActor ctor

Remaining 5 are false positives (CWE-1236 x2, failures-1, year-0001, M365).
Build 0 errors / 0 warnings.

src/ZB.MOM.WW.ScadaBridge.CentralUI/ServiceCollectionExtensions.cs

@@ -111,12 +111,11 @@ public static class ServiceCollectionExtensions
         // The fan-out itself stays scoped (it holds scoped repositories + the snapshot
         // client), but the page resolves it through SharedAlarmSummaryService — a process
         // singleton that memoizes the fan-out per site with single-flight, so N circuits
-        // watching one site cost ONE fan-out per window instead of N (arch-review WP2.4).
+        // watching one site cost ONE fan-out per window instead of N.
         services.AddScoped<AlarmSummaryService>();
         services.AddSingleton<IAlarmSummaryService, SharedAlarmSummaryService>();
 
-        // Process-level memoized point-in-time KPI snapshots (arch-review WP2.4, finding
-        // #8's per-circuit half). Singleton on purpose: the memo has to outlive any one
+        // Process-level memoized point-in-time KPI snapshots. Singleton on purpose: the memo has to outlive any one
         // circuit for N dashboards to share a single SQL round per refresh window.
         services.AddSingleton<IKpiSnapshotCache, KpiSnapshotCache>();