scheduled prompts: add/remove targets on edit (#474 fast-follow)

hive-ag3nt/src/mcp.rs

@@ -1006,6 +1006,16 @@ pub struct EditScheduleArgs {
     /// leave the schedule on its current cadence.
     #[serde(default)]
     pub next_fire_at_unix: Option<i64>,
+    /// Names of new targets to add. Replace-on-conflict: re-adding
+    /// a previously cancelled target resets its history (operator
+    /// intent on re-add = "this target is active again").
+    #[serde(default)]
+    pub targets_add: Option<Vec<String>>,
+    /// Names of targets to cancel. Tombstones preserve per-target
+    /// audit; when no active targets remain the schedule
+    /// auto-cancels.
+    #[serde(default)]
+    pub targets_remove: Option<Vec<String>>,
 }
 
 #[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
@@ -1382,6 +1392,8 @@ impl ManagerServer {
                     description: args.description.map(Some),
                     interval_seconds: args.interval_seconds.map(Some),
                     next_fire_at_unix: args.next_fire_at_unix,
+                    targets_add: args.targets_add,
+                    targets_remove: args.targets_remove,
                 })
                 .await;
             annotate_retries(