feat: Add Supabase Activity Scheduler workflow and backend API endpoint

Author: yashksaini-coder

.github/workflows/ping.yml

@@ -0,0 +1,16 @@
+# .github/workflows/supabase-activity-scheduler.yml
+
+name: Supabase Activity Scheduler
+
+on:
+  schedule:
+    - cron: "0 0 * * *" # Runs at 00:00 every day
+  workflow_dispatch:
+
+jobs:
+  send-http-request:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Send HTTP Request
+        run: curl -X GET https://leetcode-journal.vercel.app/api/etc/supabase-activity-scheduler

app/api/etc/supabase-activity-scheduler/route.ts

@@ -0,0 +1,9 @@
+import { NextResponse } from 'next/server';
+
+export async function GET() {
+    return NextResponse.json({ 
+        message: 'Backend API service is healthy',
+        status: 'healthy',
+        timestamp: new Date().toISOString()
+    }, { status: 200 });
+}