write a log line on render

Author: sawka

tsunami/demo/tsunamiconfig/static/tw.css

@@ -12,23 +12,14 @@
     --color-green-600: oklch(62.7% 0.194 149.214);
     --color-green-700: oklch(52.7% 0.154 150.069);
     --color-green-900: oklch(39.3% 0.095 152.535);
-    --color-blue-400: oklch(70.7% 0.165 254.624);
     --color-blue-500: oklch(62.3% 0.214 259.815);
     --color-blue-600: oklch(54.6% 0.245 262.881);
     --color-blue-700: oklch(48.8% 0.243 264.376);
-    --color-blue-900: oklch(37.9% 0.146 265.522);
     --color-slate-100: oklch(96.8% 0.007 247.896);
     --color-slate-400: oklch(70.4% 0.04 256.788);
     --color-slate-600: oklch(44.6% 0.043 257.281);
     --color-slate-700: oklch(37.2% 0.044 257.287);
     --color-slate-800: oklch(27.9% 0.041 260.031);
-    --color-gray-200: oklch(92.8% 0.006 264.531);
-    --color-gray-400: oklch(70.7% 0.022 261.325);
-    --color-gray-500: oklch(55.1% 0.027 264.364);
-    --color-gray-600: oklch(44.6% 0.03 256.802);
-    --color-gray-700: oklch(37.3% 0.034 259.733);
-    --color-gray-800: oklch(27.8% 0.033 256.848);
-    --color-gray-900: oklch(21% 0.034 264.665);
     --color-white: #fff;
     --spacing: 0.25rem;
     --container-4xl: 56rem;
@@ -45,7 +36,6 @@
     --text-3xl: 1.875rem;
     --text-3xl--line-height: calc(2.25 / 1.875);
     --font-weight-medium: 500;
-    --font-weight-semibold: 600;
     --font-weight-bold: 700;
     --leading-relaxed: 1.625;
     --radius-lg: 0.5rem;

tsunami/engine/serverhandlers.go

@@ -96,19 +96,35 @@ func (h *httpHandlers) handleRender(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	startTime := time.Now()
 	update, err := h.processFrontendUpdate(&feUpdate)
+	duration := time.Since(startTime)
+	
 	if err != nil {
 		http.Error(w, fmt.Sprintf("render error: %v", err), http.StatusInternalServerError)
 		return
 	}
 	if update == nil {
 		w.WriteHeader(http.StatusOK)
+		log.Printf("render %4dms %4dk %s", duration.Milliseconds(), 0, feUpdate.Reason)
 		return
 	}
 
 	w.Header().Set("Content-Type", "application/json")
-	if err := json.NewEncoder(w).Encode(update); err != nil {
+	
+	// Encode to bytes first to calculate size
+	responseBytes, err := json.Marshal(update)
+	if err != nil {
 		log.Printf("failed to encode response: %v", err)
+		http.Error(w, "failed to encode response", http.StatusInternalServerError)
+		return
+	}
+	
+	updateSizeKB := len(responseBytes) / 1024
+	log.Printf("render %4dms %4dk %s", duration.Milliseconds(), updateSizeKB, feUpdate.Reason)
+	
+	if _, err := w.Write(responseBytes); err != nil {
+		log.Printf("failed to write response: %v", err)
 	}
 }