feat: Implement usage statistics tracking with backend integration and route setup

web/comfyui/usage_stats.js

@@ -0,0 +1,37 @@
+// ComfyUI extension to track model usage statistics
+import { app } from "../../scripts/app.js";
+import { api } from "../../scripts/api.js";
+
+// Register the extension
+app.registerExtension({
+    name: "ComfyUI-Lora-Manager.UsageStats",
+    
+    init() {
+        // Listen for successful executions
+        api.addEventListener("execution_success", ({ detail }) => {
+            if (detail && detail.prompt_id) {
+                this.updateUsageStats(detail.prompt_id);
+            }
+        });
+    },
+    
+    async updateUsageStats(promptId) {
+        try {
+            console.log("Updating usage statistics for prompt ID:", promptId);
+            // Call backend endpoint with the prompt_id
+            const response = await fetch(`/loras/api/update-usage-stats`, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify({ prompt_id: promptId }),
+            });
+            
+            if (!response.ok) {
+                console.warn("Failed to update usage statistics:", response.statusText);
+            }
+        } catch (error) {
+            console.error("Error updating usage statistics:", error);
+        }
+    }
+});