fix: send 'query' instead of member_name/team_name to /member/list and /team/list

Backend input structs (fc-pgy/cmd/server/controller/member/member.go:38-45 and
fc-pgy/cmd/server/controller/team/team.go:311-318) declare the search keyword
field as 'query', not 'member_name'/'team_name'. Our previous payload was
silently dropped, so name-based search returned all members/teams unfiltered.

Wire-only fix; the MCP-side 'name' parameter and tool descriptions are unchanged.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ysyneu

pkg/flashduty/users.go

@@ -70,7 +70,7 @@ func QueryMembers(getClient GetFlashdutyClientFn, t translations.TranslationHelp
 				"limit": defaultUsersQueryLimit,
 			}
 			if name != "" {
-				requestBody["member_name"] = name
+				requestBody["query"] = name
 			}
 			if email != "" {
 				requestBody["email"] = email
@@ -167,7 +167,7 @@ func QueryTeams(getClient GetFlashdutyClientFn, t translations.TranslationHelper
 				"limit": defaultUsersQueryLimit,
 			}
 			if name != "" {
-				requestBody["team_name"] = name
+				requestBody["query"] = name
 			}
 
 			resp, err := client.makeRequest(ctx, "POST", "/team/list", requestBody)