Fix database trigger for moderation queue

supabase/migrations/20251009133835_fd8489c1-8357-4524-a11a-a2e7430f5c84.sql

@@ -0,0 +1,39 @@
+-- Fix the update trigger to preserve timestamps when only metadata changes
+-- This prevents false "new submission" detection when priority is recalculated
+
+DROP TRIGGER IF EXISTS update_content_submissions_updated_at ON public.content_submissions;
+DROP FUNCTION IF EXISTS public.update_content_submissions_updated_at();
+
+CREATE OR REPLACE FUNCTION public.update_content_submissions_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+  -- Only update updated_at if actual content has changed
+  -- Ignore changes to: updated_at, assigned_to, assigned_at, locked_until, priority, review_count, first_reviewed_at, resolved_at, submitted_at
+  IF (
+    NEW.content IS DISTINCT FROM OLD.content OR
+    NEW.status IS DISTINCT FROM OLD.status OR
+    NEW.reviewer_id IS DISTINCT FROM OLD.reviewer_id OR
+    NEW.reviewer_notes IS DISTINCT FROM OLD.reviewer_notes OR
+    NEW.escalated IS DISTINCT FROM OLD.escalated OR
+    NEW.escalation_reason IS DISTINCT FROM OLD.escalation_reason OR
+    NEW.approval_mode IS DISTINCT FROM OLD.approval_mode OR
+    NEW.user_id IS DISTINCT FROM OLD.user_id OR
+    NEW.submission_type IS DISTINCT FROM OLD.submission_type OR
+    NEW.escalated_by IS DISTINCT FROM OLD.escalated_by OR
+    NEW.escalated_at IS DISTINCT FROM OLD.escalated_at OR
+    NEW.original_submission_id IS DISTINCT FROM OLD.original_submission_id
+  ) THEN
+    NEW.updated_at = NOW();
+  ELSE
+    -- Keep the old updated_at timestamp if only metadata changed
+    NEW.updated_at = OLD.updated_at;
+  END IF;
+  
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER update_content_submissions_updated_at
+  BEFORE UPDATE ON public.content_submissions
+  FOR EACH ROW
+  EXECUTE FUNCTION public.update_content_submissions_updated_at();