refactor: Remove Token management and integrate Redis for authentication

- Deleted the Token model and its repository, transitioning to a Redis-based token management system.
- Updated the service layer to utilize Redis for token storage, enhancing performance and scalability.
- Refactored the container to remove TokenRepository and integrate the new token service.
- Cleaned up the Dockerfile and other files by removing unnecessary whitespace and comments.
- Enhanced error handling and logging for Redis initialization and usage.

internal/errors/errors_test.go

@@ -0,0 +1,38 @@
+package errors
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestAppErrorBasics(t *testing.T) {
+	root := errors.New("root")
+	appErr := NewBadRequest("bad", root)
+
+	if appErr.Code != 400 || appErr.Message != "bad" {
+		t.Fatalf("unexpected appErr fields: %+v", appErr)
+	}
+	if got := appErr.Error(); got != "bad: root" {
+		t.Fatalf("unexpected Error(): %s", got)
+	}
+	if !Is(appErr, root) {
+		t.Fatalf("Is should match wrapped error")
+	}
+	var target *AppError
+	if !As(appErr, &target) {
+		t.Fatalf("As should succeed")
+	}
+}
+
+func TestWrap(t *testing.T) {
+	if Wrap(nil, "msg") != nil {
+		t.Fatalf("Wrap nil should return nil")
+	}
+	err := errors.New("base")
+	wrapped := Wrap(err, "ctx")
+	if wrapped.Error() != "ctx: base" {
+		t.Fatalf("wrap message mismatch: %v", wrapped)
+	}
+}
+
+