huskies: merge 974

server/src/pipeline_state/tests.rs

@@ -993,4 +993,40 @@ fn move_story_merge_to_current_succeeds() {
     );
 }
 
+// ── Story 974: Done → Coding (hotfix) ─────────────────────────────
+
+#[test]
+fn hotfix_requested_from_done_lands_in_coding() {
+    let done = Stage::Done {
+        merged_at: chrono::Utc::now(),
+        merge_commit: sha("abc123"),
+    };
+    let result = transition(done, PipelineEvent::HotfixRequested).unwrap();
+    assert!(
+        matches!(result, Stage::Coding),
+        "Done + HotfixRequested must land in Coding; got: {:?}",
+        result
+    );
+}
+
+#[test]
+fn hotfix_requested_rejected_from_non_done_stages() {
+    for stage in [
+        Stage::Backlog,
+        Stage::Coding,
+        Stage::Qa,
+        Stage::Merge {
+            feature_branch: fb("feature/story-1"),
+            commits_ahead: nz(1),
+        },
+    ] {
+        let result = transition(stage.clone(), PipelineEvent::HotfixRequested);
+        assert!(
+            result.is_err(),
+            "HotfixRequested must be rejected from {:?}",
+            stage
+        );
+    }
+}
+
 // ── ProjectionError Display ─────────────────────────────────────────