feat(archive): month snapshots on the same node, drop extra-node and HTML /view.

Fixes EventHub/EventHubBack#76

Co-authored-by: Cursor <cursoragent@cursor.com>

test/unit/eh_test_support.erl

@@ -99,7 +99,8 @@ ensure_indexes(Tables) when is_list(Tables) ->
     {push_subscription, [user_id, endpoint]},
     {auth_session, [family_id, subject_id]},
     {report, [resolved_by]},
-    {ticket, [assigned_to]}
+    {ticket, [assigned_to]},
+    {month_snapshot, [calendar_id, year_month]}
   ]),
   ok.
 
@@ -204,7 +205,9 @@ table_opts(node_metric) ->
   [{ram_copies, [node()]}, {local_content, true},
    {attributes, record_info(fields, node_metric)}];
 table_opts(schema_migration) ->
-  [{ram_copies, [node()]}, {attributes, record_info(fields, schema_migration)}].
+  [{ram_copies, [node()]}, {attributes, record_info(fields, schema_migration)}];
+table_opts(month_snapshot) ->
+  [{ram_copies, [node()]}, {attributes, record_info(fields, month_snapshot)}].
 
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