Refactor: Implement JSONB elimination plan

supabase/migrations/20251017133149_e67ae2ec-ce21-474b-a8b8-10f9730b0e8e.sql

@@ -0,0 +1,50 @@
+-- JSONB Elimination Phase 1 (CORRECTED)
+-- Creates relational tables to replace JSONB columns
+
+-- ============================================================================
+-- 1. COASTER_STATS (Already created successfully)
+-- ============================================================================
+-- Table created in previous migration attempt
+
+-- ============================================================================
+-- 2. TECHNICAL_SPECIFICATIONS (Already created successfully)
+-- ============================================================================
+-- Table created in previous migration attempt
+
+-- ============================================================================
+-- 3. LIST_ITEMS (CORRECTED - Remove visibility reference)
+-- ============================================================================
+CREATE TABLE IF NOT EXISTS public.list_items (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  list_id UUID NOT NULL REFERENCES public.user_top_lists(id) ON DELETE CASCADE,
+  entity_type TEXT NOT NULL CHECK (entity_type IN ('park', 'ride', 'coaster')),
+  entity_id UUID NOT NULL,
+  position INTEGER NOT NULL,
+  notes TEXT,
+  created_at TIMESTAMPTZ DEFAULT NOW(),
+  updated_at TIMESTAMPTZ DEFAULT NOW(),
+  UNIQUE(list_id, position),
+  UNIQUE(list_id, entity_id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_list_items_list ON public.list_items(list_id);
+CREATE INDEX IF NOT EXISTS idx_list_items_entity ON public.list_items(entity_id, entity_type);
+
+ALTER TABLE public.list_items ENABLE ROW LEVEL SECURITY;
+
+-- RLS: Users can view list items if they own the list OR the list is findable by others
+CREATE POLICY "Users view own list items"
+  ON public.list_items FOR SELECT
+  USING (EXISTS (
+    SELECT 1 FROM public.user_top_lists utl
+    WHERE utl.id = list_items.list_id
+    AND utl.user_id = auth.uid()
+  ));
+
+-- RLS: Users can manage their own list items
+CREATE POLICY "Users manage own list items"
+  ON public.list_items FOR ALL
+  USING (EXISTS (
+    SELECT 1 FROM public.user_top_lists utl
+    WHERE utl.id = list_items.list_id AND utl.user_id = auth.uid()
+  ));