Implement Phase 1 audit logging

Add centralized admin action logger and integrate logging for:
- Alert resolutions (system, rate limit, grouped)
- Role grants/revokes in UserRoleManager
- Incident creation/acknowledgement/resolution
- Moderation lock overrides

Includes file updates and usage across relevant components to ensure consistent audit trails.

src/hooks/useRateLimitAlerts.ts

@@ -151,6 +151,16 @@ export function useResolveAlert() {
 
   return useMutation({
     mutationFn: async (id: string) => {
+      // Fetch full alert details before resolving
+      const { data: alert, error: fetchError } = await supabase
+        .from('rate_limit_alerts')
+        .select('*')
+        .eq('id', id)
+        .single();
+      
+      if (fetchError) throw fetchError;
+      
+      // Resolve the alert
       const { data, error } = await supabase
         .from('rate_limit_alerts')
         .update({ resolved_at: new Date().toISOString() })
@@ -159,6 +169,18 @@ export function useResolveAlert() {
         .single();
 
       if (error) throw error;
+      
+      // Log to audit trail
+      const { logAdminAction } = await import('@/lib/adminActionAuditHelpers');
+      await logAdminAction('rate_limit_alert_resolved', {
+        alert_id: id,
+        metric_type: alert.metric_type,
+        metric_value: alert.metric_value,
+        threshold_value: alert.threshold_value,
+        function_name: alert.function_name,
+        time_window_ms: alert.time_window_ms,
+      });
+      
       return data;
     },
     onSuccess: () => {