huskies: merge 581_story_freeze_command_to_hold_a_story_at_its_current_stage_without_advancing

server/src/agents/pool/auto_assign/story_checks.rs

@@ -93,6 +93,19 @@ pub(super) fn check_archived_dependencies(
     crate::io::story_metadata::check_archived_deps(project_root, stage_dir, story_id)
 }
 
+/// Return `true` if the story file has `frozen: true` in its front matter.
+pub(super) fn is_story_frozen(project_root: &Path, _stage_dir: &str, story_id: &str) -> bool {
+    use crate::io::story_metadata::parse_front_matter;
+    let contents = match read_story_contents(project_root, story_id) {
+        Some(c) => c,
+        None => return false,
+    };
+    parse_front_matter(&contents)
+        .ok()
+        .and_then(|m| m.frozen)
+        .unwrap_or(false)
+}
+
 /// Return `true` if the story file has a `merge_failure` field in its front matter.
 pub(super) fn has_merge_failure(project_root: &Path, _stage_dir: &str, story_id: &str) -> bool {
     use crate::io::story_metadata::parse_front_matter;