feat(embedding,vision): candle embeddings with offline fallback, on-demand clipboard vision capture, and concurrency audit

server/src/api/rest.rs

@@ -95,6 +95,7 @@ pub async fn gate_set_handler(
         status,
         reason: body.reason.clone(),
         timestamp: crate::handlers::utils::now_secs(),
+        ..Default::default()
     };
     app_state.handler.state.env.gates.modify(|gates| {
         gates.retain(|g| !(g.action == record.action && g.target == record.target));