Add ACMCC app source, Supabase backend, and project config

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

supabase/migrations/20260323001201_cbc5740e-4743-4bea-8bab-1a9503632420.sql

@@ -0,0 +1,18 @@
+CREATE TABLE public.user_dashboard_layouts (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  user_id UUID REFERENCES auth.users(id) ON DELETE CASCADE NOT NULL,
+  layout JSONB NOT NULL DEFAULT '[]'::jsonb,
+  cards JSONB NOT NULL DEFAULT '[]'::jsonb,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+  UNIQUE(user_id)
+);
+
+ALTER TABLE public.user_dashboard_layouts ENABLE ROW LEVEL SECURITY;
+
+CREATE POLICY "Users can manage their own dashboard layout"
+  ON public.user_dashboard_layouts
+  FOR ALL
+  TO authenticated
+  USING (user_id = auth.uid())
+  WITH CHECK (user_id = auth.uid());