Stage 17 (#15): admin users people/robots toggle + display-name & external-id glob filters

- account.ListUsers/CountUsers with a UserFilter: people vs robots (by a robot identity),
  case-insensitive '*'/'?' glob masks on display_name and any identity's external_id
- admin users list shows the real kind (robot/guest/registered), defaults to people,
  with a People/Robots toggle + a filter form; pager preserves the filter
- integration test for the filter; SQL verified against the live contour DB

backend/internal/server/handlers_admin_console.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"net/http"
+	"net/url"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -75,24 +76,45 @@ func (s *Server) consoleDashboard(c *gin.Context) {
 func (s *Server) consoleUsers(c *gin.Context) {
 	ctx := c.Request.Context()
 	page := consolePage(c)
-	total, _ := s.accounts.CountAccounts(ctx)
-	accs, err := s.accounts.ListAccounts(ctx, adminPageSize, (page-1)*adminPageSize)
+	filter := account.UserFilter{
+		Robots:         c.Query("kind") == "robots",
+		NameMask:       c.Query("name"),
+		ExternalIDMask: c.Query("ext"),
+	}
+	total, _ := s.accounts.CountUsers(ctx, filter)
+	items, err := s.accounts.ListUsers(ctx, filter, adminPageSize, (page-1)*adminPageSize)
 	if err != nil {
 		s.consoleError(c, err)
 		return
 	}
-	view := adminconsole.UsersView{Pager: adminconsole.NewPager(page, adminPageSize, total)}
-	ids := make([]uuid.UUID, 0, len(accs))
-	for _, a := range accs {
+	q := url.Values{}
+	if filter.Robots {
+		q.Set("kind", "robots")
+	}
+	if strings.TrimSpace(filter.NameMask) != "" {
+		q.Set("name", filter.NameMask)
+	}
+	if strings.TrimSpace(filter.ExternalIDMask) != "" {
+		q.Set("ext", filter.ExternalIDMask)
+	}
+	view := adminconsole.UsersView{
+		Pager:  adminconsole.NewPager(page, adminPageSize, total),
+		Robots: filter.Robots, NameMask: filter.NameMask, ExternalIDMask: filter.ExternalIDMask,
+		FilterQuery: q.Encode(),
+	}
+	ids := make([]uuid.UUID, 0, len(items))
+	for _, it := range items {
 		kind := "registered"
-		if a.IsGuest {
+		if it.IsRobot {
+			kind = "robot"
+		} else if it.IsGuest {
 			kind = "guest"
 		}
 		view.Items = append(view.Items, adminconsole.UserRow{
-			ID: a.ID.String(), DisplayName: a.DisplayName, Kind: kind,
-			Language: a.PreferredLanguage, Guest: a.IsGuest, CreatedAt: fmtTime(a.CreatedAt),
+			ID: it.ID.String(), DisplayName: it.DisplayName, Kind: kind,
+			Language: it.PreferredLanguage, Guest: it.IsGuest, CreatedAt: fmtTime(it.CreatedAt),
 		})
-		ids = append(ids, a.ID)
+		ids = append(ids, it.ID)
 	}
 	if stats, err := s.games.MoveDurationStats(ctx, ids); err == nil {
 		for i := range view.Items {