Expand description
Capture a land:mountain:handler:complete event for one IPC handler
invocation. Feature is the Mountain-side route key (e.g.
file:read, extensions:getInstalled); DurationMs measures the
handler body only (Tauri-frame overhead excluded); Ok reports
whether the handler returned Ok(_).
The Feature Parity dashboard pivots Feature to compare Mountain
(Rust) vs Cocoon (Node) handler latency for migrated routes.