chore: fix nu errors

reflection/modules/describe.nu

@@ -2915,12 +2915,12 @@ def render-project-text [data: record, actor: string, root: string]: nothing ->
     if ($prov_schema | is-not-empty) { print $"  schemas: ($prov_schema)" }
     let prov_impl = ($d_prov.impl_repo_kind? | default "")
     if ($prov_impl | is-not-empty) { print $"  impl repo_kind: ($prov_impl)" }
-    print $"  → ore describe domain  (list implementations)"
+    print "  → ore describe domain  (list implementations)"
   }
   if ($d_orig | is-not-empty) and ($d_orig.id? | is-not-empty) {
     let orig_path = ($d_orig.path? | default "")
     if ($orig_path | is-not-empty) {
-      print $"  → ONTOREF_PROJECT_ROOT=($orig_path) ore describe domain  (framework details)"
+      print $"  → ONTOREF_PROJECT_ROOT=($orig_path) ore describe domain  \(framework details\)"
     }
   }
 

reflection/modules/vcs.nu

@@ -96,8 +96,7 @@ export def "current-ref" []: nothing -> string {
     match (detect) {
         "jj" => {
             let r = do {
-                ^jj --no-pager --repository $root bookmark list --pointing-to "@"
-                    -T 'name ++ "\n"'
+                ^jj --no-pager --repository $root bookmark list --pointing-to "@" -T "name ++ \"\\n\""
             } | complete
             if $r.exit_code != 0 { return "detached" }
             let names = ($r.stdout | lines | where { |l| ($l | str trim | is-not-empty) })

reflection/nulib/logger.nu

@@ -57,7 +57,8 @@ def needs-rotation [log_file: string, policy: string]: nothing -> bool {
   if not ($log_file | path exists) { return false }
 
   let stat = ls -l $log_file | first
-  let file_modified = $stat.modified
+  let file_modified = $stat.modified?
+  if $file_modified == null { return false }
   let now = (date now)
 
   let file_suffix = (rotation-suffix $policy $file_modified)