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.ConfigurationDatabase/ServiceCollectionExtensions.cs

@@ -29,7 +29,7 @@ public static class ServiceCollectionExtensions
         // because key-ring loading is lazy (first Protect/Unprotect), not triggered by
         // CreateProtector during model building.
         //
-        // POOLING IS DELIBERATELY NOT USED (WP2.2 — verified, not overlooked).
+        // POOLING IS DELIBERATELY NOT USED (verified, not overlooked).
         // AddDbContextPool requires a context with a SINGLE public constructor taking
         // only DbContextOptions<TContext>; EF Core constructs pooled instances through
         // its own activator and cannot supply anything else. ScadaBridgeDbContext has