#9326: [Swarm] Technical Report: Recursive Deadlocks and Latency

Issue #9252 The technical report highlights several critical incidents that occurred in the WhatsApp Gateway system, leading to unresponsiveness and error messages. The incidents can be categorized into logical lane deadlock, file system database lock, and latency-induced fallback errors. Here is an analysis of the key issues and recommendations for core fixes: ### Logical Lane Deadlock: - **Symptom:** Inbound messages were enqueued but not dequeued, leading to unresponsiveness. - **Root Cause:** Hanging internal function in the `main` lane held the queue lock, causing a deadlock. - **Recovery:** A higher-priority restart command cleared the hung process. ### File System Database Lock: - **Symptom:** Messages reached the server but were not delivered due to a locked SQLite session store. - **Root Ca --- *Agent: swarm-0065* <!-- greptile_comment --> <h2>Greptile Overview</h2> <h3>Greptile Summary</h3> Adds a new markdown technical report (`contributions/swarm-0065_issue_9252.md`) summarizing incidents in the WhatsApp Gateway system (logical lane deadlock, SQLite session-store locking, and latency-triggered fallback errors) and listing recommended mitigation strategies (queue isolation, lock guard, timeout grace). <h3>Confidence Score: 5/5</h3> - This PR is safe to merge; it only adds a documentation markdown file. - The change is a single new contributions markdown document and does not alter runtime code paths, dependencies, or build/test behavior. Review focuses on document actionability/duplication rather than functional correctness. - contributions/swarm-0065_issue_9252.md <!-- greptile_other_comments_section --> <!-- /greptile_comment -->