huskies: merge 581_story_freeze_command_to_hold_a_story_at_its_current_stage_without_advancing

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

@@ -15,7 +15,7 @@ use super::scan::{
 };
 use super::story_checks::{
     check_archived_dependencies, has_merge_failure, has_review_hold, has_unmet_dependencies,
-    is_story_blocked, read_story_front_matter_agent,
+    is_story_blocked, is_story_frozen, read_story_front_matter_agent,
 };
 
 impl AgentPool {
@@ -103,6 +103,12 @@ impl AgentPool {
                     continue;
                 }
 
+                // Skip frozen stories — pipeline advancement is suspended.
+                if is_story_frozen(project_root, stage_dir, story_id) {
+                    slog!("[auto-assign] Story '{story_id}' is frozen; skipping until unfrozen.");
+                    continue;
+                }
+
                 // Skip blocked stories (retry limit exceeded).
                 if is_story_blocked(project_root, stage_dir, story_id) {
                     continue;