fix(template-engine): carry IsMesReportable onto derived-template placeholder alarms and through descendant reconcile; final-review doc fixes

Claude-Session: https://claude.ai/code/session_01Y5ef34iUUMjmwnMpL9xgmB

docs/requirements/Component-CLI.md

@@ -110,6 +110,12 @@ scadabridge instance delete --id <id>
 `[["Speed", 5], ["Mode", 7]]`. `--overrides` is a JSON object of attribute name to
 value, e.g. `{"Speed": "100", "Mode": null}`.
 
+`instance alarm-override set` replaces the **whole** override row — an omitted flag is not
+"leave as is", it clears that field back to inherited. `instance alarm-override set
+--instance-id 6 --alarm X --mes-reportable true` wipes any existing `--priority` /
+`--trigger-config` override on alarm `X`; pass every override to keep on the same command
+(`instance alarm-override list` shows the current values).
+
 ### Native Alarm Source Commands
 
 The `native-alarm-source` subcommands manage the **read-only native alarm mirror** —