Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260315214946_aa171167-a1d9-41e5-88f7-10629b8d6aae.sql

@@ -0,0 +1,35 @@
+
+CREATE TABLE public.billable_expenses (
+  id UUID NOT NULL DEFAULT gen_random_uuid() PRIMARY KEY,
+  association_id UUID REFERENCES public.associations(id) ON DELETE CASCADE NOT NULL,
+  date DATE NOT NULL DEFAULT CURRENT_DATE,
+  description TEXT,
+  amount NUMERIC(12,2) NOT NULL DEFAULT 0,
+  category TEXT,
+  billable_type TEXT,
+  status TEXT NOT NULL DEFAULT 'pending',
+  is_credit BOOLEAN NOT NULL DEFAULT false,
+  credit_reason TEXT,
+  quantity NUMERIC(10,2) DEFAULT 1,
+  unit_price NUMERIC(12,2),
+  vendor_name TEXT,
+  address TEXT,
+  receipt_url TEXT,
+  created_by UUID,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+  updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+ALTER TABLE public.billable_expenses ENABLE ROW LEVEL SECURITY;
+
+CREATE POLICY "Authenticated users can view billable_expenses"
+  ON public.billable_expenses FOR SELECT TO authenticated USING (true);
+
+CREATE POLICY "Authenticated users can insert billable_expenses"
+  ON public.billable_expenses FOR INSERT TO authenticated WITH CHECK (true);
+
+CREATE POLICY "Authenticated users can update billable_expenses"
+  ON public.billable_expenses FOR UPDATE TO authenticated USING (true) WITH CHECK (true);
+
+CREATE POLICY "Authenticated users can delete billable_expenses"
+  ON public.billable_expenses FOR DELETE TO authenticated USING (true);