pinakes-core: wrap save_markdown_links in transactions for atomicity

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I44eaeda5bc1d6894137ee9a3c902cdac6a6a6964

crates/pinakes-core/src/storage/sqlite.rs

@@ -6400,16 +6400,19 @@ impl StorageBackend for SqliteBackend {
         let links: Vec<_> = links.to_vec();
 
         tokio::task::spawn_blocking(move || {
-            let conn = conn.lock().unwrap();
+            let mut conn = conn.lock().unwrap();
+
+            // Wrap DELETE + INSERT in transaction to ensure atomicity
+            let tx = conn.transaction()?;
 
             // Delete existing links for this source
-            conn.execute(
+            tx.execute(
                 "DELETE FROM markdown_links WHERE source_media_id = ?1",
                 [&media_id_str],
             )?;
 
             // Insert new links
-            let mut stmt = conn.prepare(
+            let mut stmt = tx.prepare(
                 "INSERT INTO markdown_links (
                     id, source_media_id, target_path, target_media_id,
                     link_type, link_text, line_number, context, created_at
@@ -6430,6 +6433,10 @@ impl StorageBackend for SqliteBackend {
                 ])?;
             }
 
+            // Commit transaction - if this fails, all changes are rolled back
+            drop(stmt);
+            tx.commit()?;
+
             Ok::<_, rusqlite::Error>(())
         })
         .await