fix: update telemetry to work with Supabase RLS and permissions

- Remove .select() from insert operations to avoid permission issues
- Add debug logging for successful flushes
- Add comprehensive test scripts for telemetry verification
- Telemetry now successfully sends anonymous usage data to Supabase

scripts/test-telemetry-simple.ts

@@ -0,0 +1,45 @@
+#!/usr/bin/env npx tsx
+/**
+ * Simple test to verify telemetry works
+ */
+
+import { createClient } from '@supabase/supabase-js';
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+async function testSimple() {
+  const supabaseUrl = process.env.SUPABASE_URL!;
+  const supabaseAnonKey = process.env.SUPABASE_ANON_KEY!;
+
+  console.log('🧪 Simple Telemetry Test\n');
+
+  const supabase = createClient(supabaseUrl, supabaseAnonKey, {
+    auth: {
+      persistSession: false,
+      autoRefreshToken: false,
+    }
+  });
+
+  // Simple insert
+  const testData = {
+    user_id: 'simple-test-' + Date.now(),
+    event: 'test_event',
+    properties: { test: true }
+  };
+
+  console.log('Inserting:', testData);
+
+  const { data, error } = await supabase
+    .from('telemetry_events')
+    .insert([testData])
+    .select();
+
+  if (error) {
+    console.error('❌ Failed:', error);
+  } else {
+    console.log('✅ Success! Inserted:', data);
+  }
+}
+
+testSimple().catch(console.error);