Add automated data retention cleanup

Implements edge function, Django tasks, and UI hooks/panels for automatic retention of old metrics, anomalies, alerts, and incidents, plus updates to query keys and monitoring dashboard to reflect data-retention workflows.

supabase/functions/data-retention-cleanup/index.ts

@@ -0,0 +1,48 @@
+import { createClient } from 'https://esm.sh/@supabase/supabase-js@2.57.4';
+
+const corsHeaders = {
+  'Access-Control-Allow-Origin': '*',
+  'Access-Control-Allow-Headers': 'authorization, x-client-info, apikey, content-type',
+};
+
+Deno.serve(async (req) => {
+  if (req.method === 'OPTIONS') {
+    return new Response(null, { headers: corsHeaders });
+  }
+
+  try {
+    const supabaseUrl = Deno.env.get('SUPABASE_URL')!;
+    const supabaseKey = Deno.env.get('SUPABASE_SERVICE_ROLE_KEY')!;
+    const supabase = createClient(supabaseUrl, supabaseKey);
+
+    console.log('Starting data retention cleanup...');
+
+    // Call the master cleanup function
+    const { data, error } = await supabase.rpc('run_data_retention_cleanup');
+
+    if (error) {
+      console.error('Error running data retention cleanup:', error);
+      throw error;
+    }
+
+    console.log('Data retention cleanup completed:', data);
+
+    return new Response(
+      JSON.stringify({
+        success: true,
+        cleanup_results: data.cleanup_results,
+        timestamp: data.timestamp,
+      }),
+      { headers: { ...corsHeaders, 'Content-Type': 'application/json' } }
+    );
+  } catch (error) {
+    console.error('Error in data-retention-cleanup function:', error);
+    return new Response(
+      JSON.stringify({ error: error.message }),
+      {
+        status: 500,
+        headers: { ...corsHeaders, 'Content-Type': 'application/json' },
+      }
+    );
+  }
+});