perf: fix memory leaks, optimize tracing logs, fix networking eof fragmentation bug in nvim-core and stub, and deduplicate json-rpc handlers

server/src/api/telemetry.rs

@@ -0,0 +1,49 @@
+use crate::AppState;
+use axum::extract::State;
+use std::sync::Arc;
+
+#[derive(serde::Deserialize, serde::Serialize, Debug)]
+pub struct NvimTelemetry {
+    pub session_id: String,
+    pub event: String,
+    pub file: Option<String>,
+    pub line: Option<i64>,
+    pub col: Option<i64>,
+}
+
+pub async fn nvim_telemetry_handler(
+    State(state): State<Arc<AppState>>,
+    axum::Json(payload): axum::Json<NvimTelemetry>,
+) -> impl axum::response::IntoResponse {
+    // 1. Update active_nvim.txt if FocusGained, BufEnter, or VimEnter
+    if payload.event == "FocusGained" || payload.event == "BufEnter" || payload.event == "VimEnter"
+    {
+        let profile =
+            std::env::var("USERPROFILE").unwrap_or_else(|_| "C:\\Users\\reazul.ashraf".into());
+        let win_path = format!("{}\\.gemini\\active_nvim.txt", profile);
+        let _ = tokio::fs::write(&win_path, &payload.session_id).await;
+
+        let wsl_path = "\\\\wsl.localhost\\Ubuntu\\home\\riz\\.gemini\\active_nvim.txt";
+        let _ = tokio::fs::write(wsl_path, &payload.session_id).await;
+    }
+
+    // 2. Broadcast to UI WebSockets
+    let ws_msg = serde_json::json!({
+        "type": "nvim_telemetry",
+        "data": payload
+    });
+
+    let msg_str = ws_msg.to_string();
+    let senders: Vec<_> = state
+        .clients
+        .read()
+        .unwrap_or_else(|e| e.into_inner())
+        .values()
+        .cloned()
+        .collect();
+    for tx in senders {
+        let _ = tx.try_send(msg_str.clone());
+    }
+
+    axum::Json(serde_json::json!({"status": "ok"}))
+}