Refactor Activity Page (#710)

- inference handles to store an activity record for all inference endpoints
- add path, status code, and content type to Activities page
- toggle on/off columns no Activities page 
- add configurable capture level for inference endpoints so large binary blobs are not stored in memory
- store captures in compressed binary format

proxy/proxymanager_api.go

@@ -158,7 +158,7 @@ func (pm *ProxyManager) apiSendEvents(c *gin.Context) {
 		}
 	}
 
-	sendMetrics := func(metrics []TokenMetrics) {
+	sendMetrics := func(metrics []ActivityLogEntry) {
 		jsonData, err := json.Marshal(metrics)
 		if err == nil {
 			select {
@@ -205,8 +205,8 @@ func (pm *ProxyManager) apiSendEvents(c *gin.Context) {
 	/**
 	 * Send Metrics data
 	 */
-	defer event.On(func(e TokenMetricsEvent) {
-		sendMetrics([]TokenMetrics{e.Metrics})
+	defer event.On(func(e ActivityLogEvent) {
+		sendMetrics([]ActivityLogEntry{e.Metrics})
 	})()
 
 	/**
@@ -290,26 +290,16 @@ func (pm *ProxyManager) apiGetCapture(c *gin.Context) {
 		return
 	}
 
-	data, exists := pm.metricsMonitor.getCompressedBytes(id)
-	if !exists {
+	capture := pm.metricsMonitor.getCaptureByID(id)
+	if capture == nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": "capture not found"})
 		return
 	}
 
-	c.Header("Vary", "Accept-Encoding")
-
-	// ¯\_(ツ)_/¯ quality weights are too fancy for us anyway
-	hasZstd := strings.Contains(c.GetHeader("Accept-Encoding"), "zstd")
-
-	if hasZstd {
-		c.Header("Content-Encoding", "zstd")
-		c.Data(http.StatusOK, "application/json", data)
-	} else {
-		decompressed, err := decompressCapture(data)
-		if err != nil {
-			c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to decompress capture"})
-			return
-		}
-		c.Data(http.StatusOK, "application/json", decompressed)
+	jsonBytes, err := json.Marshal(capture)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to marshal capture"})
+		return
 	}
+	c.Data(http.StatusOK, "application/json", jsonBytes)
 }