docs(xml): fill missing XML doc comments + strip task-tracking refs across src (fixdocs)

Add missing <summary>/<param>/<returns>/<typeparam> tags and switch
interface implementations to <inheritdoc/> across 106 files; strip
project bookkeeping identifiers (Task NN, #05-TNN, PLAN-04, StoreAndForward-0NN)
from shipped code comments while preserving the descriptive rationale.
Comment-only: zero code-logic lines changed; solution builds 0/0.

Claude-Session: https://claude.ai/code/session_01MtdgwpEeCUn6cUA5f1LMPj

src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Persistence/SiteStorageService.cs

@@ -489,6 +489,7 @@ public class SiteStorageService
     /// <param name="sourceReference">Source-system reference key identifying the specific alarm condition.</param>
     /// <param name="conditionJson">Serialized <see cref="AlarmConditionState"/> JSON snapshot.</param>
     /// <param name="lastTransitionAt">Timestamp of the most recent condition transition.</param>
+    /// <param name="metadataJson">Optional serialized metadata JSON for the alarm condition; <c>null</c> when not supplied.</param>
     /// <returns>A task that completes when the alarm condition has been inserted or updated.</returns>
     public async Task UpsertNativeAlarmAsync(
         string instanceName, string sourceCanonicalName, string sourceReference,
@@ -801,7 +802,7 @@ public class SiteStorageService
     /// schema is harmless once empty); only their contents are removed.
     ///
     /// The site-side write paths (<c>StoreNotificationListAsync</c>/<c>StoreSmtpConfigurationAsync</c>)
-    /// and the <c>SiteNotificationRepository</c> were removed 2026-07-10 (arch-review 08 §1.3/#23)
+    /// and the <c>SiteNotificationRepository</c> were removed 2026-07-10 (arch-review 08 §1.3)
     /// because notification config is central-only and must never be written to a site — this
     /// purge is the sole remaining touchpoint, kept only to scrub DBs written by older builds;
     /// do not reintroduce site-side notification writes.