search fix to new architecture

common/proto/search.proto

@@ -4,6 +4,11 @@ package komp_ac.search;
 
 service Searcher {
   rpc Search(SearchRequest) returns (SearchResponse);
+  rpc Count(SearchRequest) returns (SearchCountResponse);
+}
+
+message SearchCountResponse {
+  uint64 count = 1;
 }
 
 enum MatchMode {
@@ -26,6 +31,16 @@ message SearchRequest {
   optional uint32 limit = 5;
   optional uint32 offset = 6;
   optional SearchOrder order = 7;
+  // Current rows are the default so pickers and relationship counts never
+  // select historical records. Callers may explicitly search immutable row
+  // archives as well.
+  SearchVersionScope version_scope = 8;
+}
+
+enum SearchVersionScope {
+  SEARCH_VERSION_SCOPE_CURRENT = 0;
+  SEARCH_VERSION_SCOPE_ARCHIVED = 1;
+  SEARCH_VERSION_SCOPE_ALL = 2;
 }
 
 message SearchOrder {
@@ -48,6 +63,10 @@ message SearchResponse {
     repeated string row_display_values = 5;
     repeated string row_display_columns = 6;
     optional uint64 position = 7;
+    // Version 0 means the source predates managed row versioning. New managed
+    // rows always return a positive version.
+    int64 version_number = 8;
+    bool archived = 9;
   }
   repeated Hit hits = 1;
 }