Refactor: Improve timeline event display

Implement changes to enhance the display of timeline event submissions in the moderation queue. This includes updating the `get_submission_items_with_entities` function to include timeline event data, creating a new `RichTimelineEventDisplay` component, and modifying `SubmissionItemsList` and `TimelineEventPreview` components to utilize the new display logic.

supabase/migrations/20251106152512_2b795454-d40b-4906-85cd-c410e18ad5e9.sql

@@ -0,0 +1,80 @@
+-- Fix timeline event display in moderation queue
+-- Add timeline_event_submissions to the get_submission_items_with_entities function
+
+-- Drop and recreate the function with timeline events support
+DROP FUNCTION IF EXISTS get_submission_items_with_entities(uuid);
+
+CREATE OR REPLACE FUNCTION get_submission_items_with_entities(p_submission_id UUID)
+RETURNS TABLE (
+  id UUID,
+  submission_id UUID,
+  item_type TEXT,
+  action_type TEXT,
+  status TEXT,
+  order_index INTEGER,
+  depends_on UUID,
+  park_submission_id UUID,
+  ride_submission_id UUID,
+  company_submission_id UUID,
+  photo_submission_id UUID,
+  ride_model_submission_id UUID,
+  timeline_event_submission_id UUID,
+  approved_entity_id UUID,
+  rejection_reason TEXT,
+  is_test_data BOOLEAN,
+  created_at TIMESTAMPTZ,
+  updated_at TIMESTAMPTZ,
+  entity_data JSONB
+)
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+STABLE
+AS $$
+BEGIN
+  RETURN QUERY
+  SELECT 
+    si.id,
+    si.submission_id,
+    si.item_type,
+    si.action_type,
+    si.status,
+    si.order_index,
+    si.depends_on,
+    si.park_submission_id,
+    si.ride_submission_id,
+    si.company_submission_id,
+    si.photo_submission_id,
+    si.ride_model_submission_id,
+    si.timeline_event_submission_id,
+    si.approved_entity_id,
+    si.rejection_reason,
+    si.is_test_data,
+    si.created_at,
+    si.updated_at,
+    -- Join entity data based on item_type
+    CASE
+      WHEN si.item_type = 'park' THEN
+        (SELECT to_jsonb(ps.*) FROM park_submissions ps WHERE ps.id = si.park_submission_id)
+      WHEN si.item_type = 'ride' THEN
+        (SELECT to_jsonb(rs.*) FROM ride_submissions rs WHERE rs.id = si.ride_submission_id)
+      WHEN si.item_type IN ('manufacturer', 'operator', 'designer', 'property_owner') THEN
+        (SELECT to_jsonb(cs.*) FROM company_submissions cs WHERE cs.id = si.company_submission_id)
+      WHEN si.item_type IN ('photo', 'photo_edit', 'photo_delete') THEN
+        (SELECT to_jsonb(phs.*) FROM photo_submissions phs WHERE phs.id = si.photo_submission_id)
+      WHEN si.item_type = 'ride_model' THEN
+        (SELECT to_jsonb(rms.*) FROM ride_model_submissions rms WHERE rms.id = si.ride_model_submission_id)
+      WHEN si.item_type IN ('milestone', 'timeline_event') THEN
+        (SELECT to_jsonb(tes.*) FROM timeline_event_submissions tes WHERE tes.id = si.timeline_event_submission_id)
+      ELSE NULL
+    END AS entity_data
+  FROM submission_items si
+  WHERE si.submission_id = p_submission_id
+  ORDER BY si.order_index;
+END;
+$$;
+
+COMMENT ON FUNCTION get_submission_items_with_entities IS 
+'Fetch submission items with their entity data in a single query. Uses SECURITY DEFINER to access submission tables with proper RLS context. Now includes timeline_event_submissions.';
+
+GRANT EXECUTE ON FUNCTION get_submission_items_with_entities(uuid) TO authenticated;