feat(events): add generic Event Bus and /events/wait endpoint for agent wakeups

server/src/api/events.rs

@@ -0,0 +1,44 @@
+use crate::AppState;
+use axum::extract::{Query, State};
+use axum::response::IntoResponse;
+use std::collections::HashMap;
+use std::sync::Arc;
+use crate::state::GenericEvent;
+
+pub async fn wait_for_event_handler(
+    State(state): State<Arc<AppState>>,
+    Query(params): Query<HashMap<String, String>>,
+) -> impl IntoResponse {
+    let topic = params.get("topic").cloned();
+    let session_id = params.get("session_id").cloned();
+
+    let mut rx = state.handler.state.event_bus_tx.subscribe();
+
+    loop {
+        match rx.recv().await {
+            Ok(event) => {
+                let topic_matches = topic.as_ref().map_or(true, |t| t == &event.topic);
+                let session_matches = session_id.as_ref().map_or(true, |s| Some(s) == event.session_id.as_ref());
+
+                if topic_matches && session_matches {
+                    return axum::Json(event);
+                }
+            }
+            Err(_) => {
+                return axum::Json(GenericEvent {
+                    topic: "error".to_string(),
+                    session_id: None,
+                    payload: serde_json::json!({"error": "Event bus lagged or closed"}),
+                });
+            }
+        }
+    }
+}
+
+pub async fn post_event_handler(
+    State(state): State<Arc<AppState>>,
+    axum::Json(event): axum::Json<GenericEvent>,
+) -> impl IntoResponse {
+    let _ = state.handler.state.event_bus_tx.send(event);
+    axum::Json(serde_json::json!({"status": "ok"}))
+}

server/src/api/mod.rs

@@ -2,3 +2,4 @@ pub mod rest;
 pub mod setup;
 pub mod telemetry;
 pub mod ws;
+pub mod events;

server/src/api/setup.rs

@@ -24,6 +24,8 @@ pub fn create_router(app_state: Arc<AppState>) -> Router {
         .route("/ws", get(ws_handler))
         .route("/health", get(health_handler))
         .route("/nvim/telemetry", post(nvim_telemetry_handler))
+        .route("/events/wait", get(crate::api::events::wait_for_event_handler))
+        .route("/events", post(crate::api::events::post_event_handler))
         .route("/gate/verify", get(gate_verify_handler))
         .route("/gate/set", post(gate_set_handler))
         .route(

server/src/api/telemetry.rs

@@ -45,5 +45,18 @@ pub async fn nvim_telemetry_handler(
         let _ = tx.try_send(msg_str.clone());
     }
 
+    if payload.event == "BufWritePost" {
+        if let Some(ref file_path) = payload.file {
+            let normalized_file = file_path.replace("\\", "/");
+            let topic = format!("nvim:save:{}", normalized_file);
+            let event = crate::state::GenericEvent {
+                topic,
+                session_id: Some(payload.session_id.clone()),
+                payload: serde_json::json!(&payload),
+            };
+            let _ = state.handler.state.event_bus_tx.send(event);
+        }
+    }
+
     axum::Json(serde_json::json!({"status": "ok"}))
 }