Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260319020456_ffd99fe2-ec2b-4747-aeda-bd645983a2d7.sql

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+-- RLS policies for the 'files' storage bucket
+CREATE POLICY "Authenticated users can upload to files bucket"
+ON storage.objects
+FOR INSERT
+TO authenticated
+WITH CHECK (bucket_id = 'files');
+
+CREATE POLICY "Authenticated users can read files bucket"
+ON storage.objects
+FOR SELECT
+TO authenticated
+USING (bucket_id = 'files');
+
+CREATE POLICY "Authenticated users can update files bucket"
+ON storage.objects
+FOR UPDATE
+TO authenticated
+USING (bucket_id = 'files')
+WITH CHECK (bucket_id = 'files');
+
+CREATE POLICY "Authenticated users can delete from files bucket"
+ON storage.objects
+FOR DELETE
+TO authenticated
+USING (bucket_id = 'files');