huskies: merge 1098 bug Shadow drift: set_retry_count / bump_retry_count write CRDT register without updating pipeline_items.retry_count

server/src/db/ops.rs

@@ -359,6 +359,41 @@ mod tests {
     use super::*;
     use crate::db::shadow_write;
 
+    /// `shadow_write::init` spawns its background task on the calling runtime.
+    /// Under `#[tokio::test]` that runtime is per-test and drops when the test
+    /// ends, killing the task.  This OnceLock holds a multi-thread runtime that
+    /// persists for the lifetime of the test binary so the write loop stays alive
+    /// across all tests that share `PIPELINE_DB`.
+    static SHADOW_RT: std::sync::OnceLock<tokio::runtime::Runtime> = std::sync::OnceLock::new();
+
+    async fn ensure_shadow_db() {
+        static INIT: std::sync::OnceLock<()> = std::sync::OnceLock::new();
+        if INIT.get().is_some() {
+            return;
+        }
+        let rt = SHADOW_RT.get_or_init(|| {
+            tokio::runtime::Builder::new_multi_thread()
+                .worker_threads(1)
+                .enable_all()
+                .build()
+                .expect("shadow rt")
+        });
+        rt.spawn(async {
+            static INNER: std::sync::OnceLock<()> = std::sync::OnceLock::new();
+            if INNER.get().is_some() {
+                return;
+            }
+            let tmp = tempfile::tempdir().expect("tmp");
+            let db_path = tmp.path().join("pipeline.db");
+            std::mem::forget(tmp);
+            shadow_write::init(&db_path).await.expect("shadow init");
+            let _ = INNER.set(());
+        })
+        .await
+        .expect("shadow init task");
+        let _ = INIT.set(());
+    }
+
     /// Regression test for story 1097: `set_depends_on` must sync the shadow
     /// table.  Before the fix, the CRDT register was updated but the
     /// `pipeline_items.depends_on` column was never written.
@@ -366,10 +401,7 @@ mod tests {
     async fn set_depends_on_syncs_shadow_table() {
         crate::crdt_state::init_for_test();
         ensure_content_store();
-
-        let tmp = tempfile::tempdir().unwrap();
-        let db_path = tmp.path().join("pipeline.db");
-        shadow_write::init(&db_path).await.unwrap();
+        ensure_shadow_db().await;
 
         let story_id = "1097_story_depends_on_shadow_drift";