scheduled prompts: fire-now operator + manager surfaces (closes #467)

hive-sh4re/src/lib.rs

@@ -940,6 +940,14 @@ pub enum ManagerRequest {
     /// unfiltered — the dashboard does the topology-filter for the
     /// per-agent view.
     ListSchedules,
+    /// Fire a scheduled prompt out of band (#467). Runs the
+    /// per-target fan-out once immediately without touching
+    /// `next_fire_at_unix` on recurring schedules; one-shots are
+    /// consumed by the manual fire. Authorization mirrors
+    /// `CancelSchedule`: the manager can fire its own schedules
+    /// + any owned by a sub-agent in its subtree per topology.json;
+    /// the operator surface bypasses the check.
+    FireScheduleNow { id: i64 },
 }
 
 /// Submission payload for `RequestSchedulePrompt`. Lives outside the