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+---
+name: "Assign command restarts coder when story is already in progress"
+---
+
+# Story 380: Assign command restarts coder when story is already in progress
+
+## User Story
+
+As a user, I want `assign X opus` on a running story to stop the current coder, update the front matter, and start the newly assigned agent, so that I can switch models mid-flight without manually stopping and restarting.
+
+## Acceptance Criteria
+
+- [ ] When assign is called on a story with a running coder, the current coder agent is stopped
+- [ ] The story's front matter `agent` field is updated to the new agent name
+- [ ] The newly assigned agent is started on the story automatically
+- [ ] When assign is called on a story with no running coder, it behaves as before (just updates front matter)
+
+## Out of Scope
+
+- TBD