huskies: merge 1211 story Deterministic crash notification when the agent PTY dies mid-turn

server/src/io/watcher/events.rs

@@ -138,4 +138,18 @@ pub enum WatcherEvent {
         /// Identifier of the sled that observed the recovery.
         host_id: String,
     },
+    /// An agent's PTY child process died before completing its current turn
+    /// (no `"result"` event was observed) — a crash, kill, or watchdog
+    /// termination rather than a clean finish (story 1211).
+    /// Triggers a deterministic crash notification to configured chat rooms.
+    AgentCrashed {
+        /// Work item ID the agent was working on.
+        story_id: String,
+        /// Name of the agent whose process died.
+        agent_name: String,
+        /// Child process exit code, when available.
+        exit_code: Option<u32>,
+        /// Last non-empty line emitted by the child before it died, if any.
+        last_error_line: Option<String>,
+    },
 }