Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260403184134_3361014c-88f5-45d5-94c7-081ddee493ae.sql

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+CREATE TABLE public.board_vote_responses (
+  id UUID NOT NULL DEFAULT gen_random_uuid() PRIMARY KEY,
+  board_vote_id UUID NOT NULL REFERENCES public.board_votes(id) ON DELETE CASCADE,
+  user_id UUID NOT NULL,
+  vote_option TEXT NOT NULL,
+  recorded_by UUID,
+  created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT now(),
+  updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT now(),
+  UNIQUE (board_vote_id, user_id)
+);
+
+ALTER TABLE public.board_vote_responses ENABLE ROW LEVEL SECURITY;
+
+CREATE POLICY "Authenticated users can view vote responses"
+ON public.board_vote_responses FOR SELECT
+TO authenticated
+USING (true);
+
+CREATE POLICY "Authenticated users can insert their own vote"
+ON public.board_vote_responses FOR INSERT
+TO authenticated
+WITH CHECK (auth.uid() = user_id);
+
+CREATE POLICY "Admins can insert votes on behalf of others"
+ON public.board_vote_responses FOR INSERT
+TO authenticated
+WITH CHECK (public.has_role(auth.uid(), 'admin') OR public.has_role(auth.uid(), 'manager'));
+
+CREATE TRIGGER update_board_vote_responses_updated_at
+BEFORE UPDATE ON public.board_vote_responses
+FOR EACH ROW
+EXECUTE FUNCTION public.update_updated_at_column();