feat(plugin): wire on_cursor_move and preview wires through IPC plugin runner

crates/ocs_plugin_api/src/runner.rs

@@ -243,6 +243,21 @@ fn handle_host_request(
                 None => HostResponse::Error(format!("unknown interactive command {command_id}")),
             }
         }
+        HostRequest::CursorMove { command_id, pt } => {
+            let result = {
+                let mut registry = interactive.borrow_mut();
+                registry.get_mut(&command_id).map(|cmd| {
+                    std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+                        cmd.on_cursor_move(pt)
+                    }))
+                })
+            };
+            match result {
+                Some(Ok(wires)) => HostResponse::PreviewWires(wires),
+                Some(Err(_)) => HostResponse::PreviewWires(Vec::new()),
+                None => HostResponse::PreviewWires(Vec::new()),
+            }
+        }
         HostRequest::ExecuteCode { .. } => {
             HostResponse::Error("ExecuteCode requires V4 protocol".to_string())
         }
@@ -366,6 +381,21 @@ fn handle_host_request_v4(
                 None => Some(HostResponse::Error(format!("unknown interactive command {command_id}"))),
             }
         }
+        HostRequest::CursorMove { command_id, pt } => {
+            let result = {
+                let mut registry = interactive.borrow_mut();
+                registry.get_mut(&command_id).map(|cmd| {
+                    std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+                        cmd.on_cursor_move(pt)
+                    }))
+                })
+            };
+            match result {
+                Some(Ok(wires)) => Some(HostResponse::PreviewWires(wires)),
+                Some(Err(_)) => Some(HostResponse::PreviewWires(Vec::new())),
+                None => Some(HostResponse::PreviewWires(Vec::new())),
+            }
+        }
         HostRequest::ExecuteCode {
             command_id,
             source,