Refactor frontend components and enhance API integration

- Updated frontend-nuxt.mdc to specify usage of composables for API calls.
- Added new AuthCard and ConfirmModal components for improved UI consistency.
- Introduced UserAvatar component for user profile display, replacing previous Gravatar implementation.
- Implemented useFormSubmit composable for handling form submissions with loading and error states.
- Enhanced vitest.config.ts to include coverage reporting for composables and components.
- Removed deprecated useAdminApi and useAuth composables to streamline API interactions.
- Updated login and setup pages to utilize new components and composables for better user experience.

internal/app/services/client_test.go

@@ -1,9 +1,14 @@
 package services_test
 
 import (
+	"context"
+	"encoding/json"
 	"testing"
 
+	"github.com/andyleap/hnh-map/internal/app"
 	"github.com/andyleap/hnh-map/internal/app/services"
+	"github.com/andyleap/hnh-map/internal/app/store"
+	"go.etcd.io/bbolt"
 )
 
 func TestFixMultipartContentType_NeedsQuoting(t *testing.T) {
@@ -30,3 +35,57 @@ func TestFixMultipartContentType_Normal(t *testing.T) {
 		t.Fatalf("expected unchanged, got %q", got)
 	}
 }
+
+func newTestClientService(t *testing.T) (*services.ClientService, *store.Store) {
+	t.Helper()
+	db := newTestDB(t)
+	st := store.New(db)
+	mapSvc := services.NewMapService(services.MapServiceDeps{
+		Store:       st,
+		GridStorage: t.TempDir(),
+		GridUpdates: &app.Topic[app.TileData]{},
+	})
+	client := services.NewClientService(services.ClientServiceDeps{
+		Store:     st,
+		MapSvc:    mapSvc,
+		WithChars: func(fn func(chars map[string]app.Character)) { fn(map[string]app.Character{}) },
+	})
+	return client, st
+}
+
+func TestClientLocate_Found(t *testing.T) {
+	client, st := newTestClientService(t)
+	ctx := context.Background()
+	gd := app.GridData{ID: "g1", Map: 1, Coord: app.Coord{X: 2, Y: 3}}
+	raw, _ := json.Marshal(gd)
+	st.Update(ctx, func(tx *bbolt.Tx) error {
+		return st.PutGrid(tx, "g1", raw)
+	})
+	result, err := client.Locate(ctx, "g1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result != "1;2;3" {
+		t.Fatalf("expected 1;2;3, got %q", result)
+	}
+}
+
+func TestClientLocate_NotFound(t *testing.T) {
+	client, _ := newTestClientService(t)
+	_, err := client.Locate(context.Background(), "ghost")
+	if err == nil {
+		t.Fatal("expected error for unknown grid")
+	}
+}
+
+func TestClientProcessGridUpdate_EmptyGrids(t *testing.T) {
+	client, _ := newTestClientService(t)
+	ctx := context.Background()
+	result, err := client.ProcessGridUpdate(ctx, services.GridUpdate{Grids: [][]string{}})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result == nil {
+		t.Fatal("expected non-nil result")
+	}
+}