Basic check of user data structure for errors

virtweb_backend/Cargo.lock

@@ -1982,6 +1982,16 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "libyml"
+version = "0.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3302702afa434ffa30847a83305f0a69d6abd74293b6554c18ec85c7ef30c980"
+dependencies = [
+ "anyhow",
+ "version_check",
+]
+
 [[package]]
 name = "light-openid"
 version = "1.0.4"
@@ -3093,6 +3103,21 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_yml"
+version = "0.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59e2dd588bf1597a252c3b920e0143eb99b0f76e4e082f4c92ce34fbc9e71ddd"
+dependencies = [
+ "indexmap",
+ "itoa",
+ "libyml",
+ "memchr",
+ "ryu",
+ "serde",
+ "version_check",
+]
+
 [[package]]
 name = "sha1"
 version = "0.10.6"
@@ -3754,6 +3779,7 @@ dependencies = [
  "rust-embed",
  "serde",
  "serde_json",
+ "serde_yml",
  "sysinfo",
  "tempfile",
  "thiserror 2.0.12",