Update project structure and enhance frontend functionality

- Added a new AGENTS.md file to document the project structure and conventions.
- Updated .gitignore to include node_modules and refined cursor rules.
- Introduced new backend and frontend components for improved map interactions, including context menus and controls.
- Enhanced API composables for better admin and authentication functionalities.
- Refactored existing components for cleaner code and improved user experience.
- Updated README.md to clarify production asset serving and user setup instructions.

internal/app/client_markers.go

@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"strconv"
 
+	"github.com/andyleap/hnh-map/internal/app/store"
 	"go.etcd.io/bbolt"
 )
 
@@ -33,15 +34,15 @@ func (a *App) uploadMarkers(rw http.ResponseWriter, req *http.Request) {
 		return
 	}
 	err = a.db.Update(func(tx *bbolt.Tx) error {
-		mb, err := tx.CreateBucketIfNotExists([]byte("markers"))
+		mb, err := tx.CreateBucketIfNotExists(store.BucketMarkers)
 		if err != nil {
 			return err
 		}
-		grid, err := mb.CreateBucketIfNotExists([]byte("grid"))
+		grid, err := mb.CreateBucketIfNotExists(store.BucketMarkersGrid)
 		if err != nil {
 			return err
 		}
-		idB, err := mb.CreateBucketIfNotExists([]byte("id"))
+		idB, err := mb.CreateBucketIfNotExists(store.BucketMarkersID)
 		if err != nil {
 			return err
 		}