refactor: remove pocketbase (#1138)

app/auth/errorjson.go

@@ -0,0 +1,16 @@
+package auth
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func unauthorizedJSON(w http.ResponseWriter, msg string) {
+	errorJSON(w, http.StatusUnauthorized, msg)
+}
+
+func errorJSON(w http.ResponseWriter, status int, msg string) {
+	w.WriteHeader(status)
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	_, _ = fmt.Fprintf(w, `{"status": %d, "error": %q, "message": %q}`, status, http.StatusText(status), msg)
+}